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  • A scanning electron microscope image of the stem of a young 5-day-old cannabis (Cannabis sativa) plant stem. This image is a transverse section of the stem showing the different cell types. Cannabis is also known as help, and is a source of strong fibers for clothing, paper, and rope. This fast growing plant shows promise for being a cheep source of fibers in the future. This image shows a horizontal field of view of .3mm.
    K170510stemApan1.jpg
  • A scanning electron microscope image of the stem of a young 5-day-old cannabis (Cannabis sativa) plant stem. This image is a transverse section of the stem showing the different cell types. Cannabis is also known as help, and is a source of strong fibers for clothing, paper, and rope. This fast growing plant shows promise for being a cheep source of fibers in the future. This image shows a horizontal field of view of .3mm.
    K170510stemApan1C.jpg
  • A scanning electron microscope image of the stem of a young 5-day-old cannabis (Cannabis sativa) plant stem. This image is a transverse section of the stem showing the different cell types. Cannabis is also known as help, and is a source of strong fibers for clothing, paper, and rope. This fast growing plant shows promise for being a cheep source of fibers in the future. This image shows a horizontal field of view of .3mm.
    K170510stemApan1B.jpg
  • Transverse section stem of a Raspberry Stem (Rubus strigosus).  Light micrograph of a section through a stem.  Also called the American Red Raspberry or American Raspberry.  The magnification is 200 times when printed 10 inches wide.
    K07raspberry200x20.tif
  • Transverse section stem of an oak tree (Quercus robur).  Light micrograph of a section through a stem.  The magnification is 200 times when printed 10 inches wide.
    K07oak200x02.tif
  • Transverse section of a  Datura Stem (Datura stramonium).  Light micrograph of a section through a stem.  The magnification is 32 times when printed 10 inches wide.  Datura is also known by the common names Jimson Weed, Gypsum Weed, Stink Weed, Loco Weed, Jamestown Weed, Thorn Apple, Angel's Trumpet, Devil's Trumpet, Devil's Snare is a common weed in the Nightshade Family. It contains tropane alkaloids that are sometimes used as a hallucinogen.
    K07datura32X.tif
  • A scanning electron microscope image of the stem of a young cannabis (Cannabis sativa) plant. The thorn-like trichomes use a physical defense to keep insects and animals from eating the plant. The stem is 1.5 mm diameter in this image.
    K170429-5day064C.jpg
  • A scanning electron microscope image of the stem of a young cannabis (Cannabis sativa) plant. The thorn-like trichomes use a physical defense to keep insects and animals from eating the plant. The stem is 1.5 mm diameter in this image.
    K170429-5day064B.jpg
  • A cross section of a mature Cannabis  stem.   The pith cells in the center of the cannabis stem. Pith is composed of soft spongy cells, which store and transport nutrients throughout the plant. . Magnification: x2200 when printed at 10 centimeters wide.
    K13SEM-canna-pith62.jpg
  • Transverse section stem of a Raspberry Stem (Rubus strigosus).  Light micrograph of a section through a stem.  Also called the American Red Raspberry or American Raspberry.  The magnification is 32 times when printed 10 inches wide.
    K07raspberry32x.tif
  • Fig Stem (Ficus sp.)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The magnification is 32 times when printed 10 inches wide.
    K07fig.tif
  • Transverse section of a King Solomon's-seal (Polygonatum muliiflorum) stem. Polygonatum (King Solomon's-seal, Solomon's Seal) is a genus of about 50 species of flowering plants within the family Ruscaceae, formerly classified in the lily family Liliaceae.  Light micrograph of a section through a  stem.  The magnification is 200 times when printed 10 inches wide.
    K07KingSolomon200x05.tif
  • A scanning electron microscope image of the stem of a young cannabis (Cannabis sativa) plant. The thorn-like trichomes use a physical defense to keep insects and animals from eating the plant. The stem is 1.5 mm diameter in this image.
    K170429-5day064.jpg
  • Transverse section of a Tamarisk stem (Tamarix tetrandra) .  micrograph of a section through a  stem.  The magnification is 200 times when printed 10 inches wide.
    K07Tamarisk200x04.tif
  • Transverse section of a Tamarisk stem (Tamarix tetrandra) .  micrograph of a section through a  stem.  The magnification is 200 times when printed 10 inches wide.
    K07Tamarisk200x02.tif
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 200 times when printed 10 inches wide.
    K07sweet-flag200x-11.tif
  • Transverse section stem of Ivy (Hedera) a dicotyledon.  Light micrograph of a section through an ivy stem.  The magnification is 600 times when printed 10 inches wide.
    K07ivy-stem600x5.tif
  • Transverse section of a honeysuckle stem. Honeysuckle (Lonicera periclymenum), known as Common Honeysuckle, European Honeysuckle or woodbine.Light micrograph of a section through a  stem.  The magnification is 32 times when printed 10 inches wide.
    K07honeysuckle32x.tif
  • Colored-enhanced scanning electron micrograph (SEM) of a section through a xylem vessel in a cannabis stem. The xylem transports water and mineral nutrients from the roots throughout the plant. The walls of the xylem vessels are strengthened with lignin  loops, a woody substance that helps to support the plant. Magnification: x2200 when printed at 10 centimeters wide.
    K13SEM-canna67.jpg
  • Transverse section of a Black Bryony stem.  Light micrograph of a section through the stem.  Black Bryony (Tamus communis) is a flowering plant, in the yam family Dioscoreaceae, native to Europe, northwest Africa and Asia.  This plant is poisonous.  It is a climbing herbaceous plant growing to 2-4 m tall, with twining stems. The magnification is 32 times when printed 10 inches wide.
    K07Tamus-communis32x.tif
  • Transverse section of a Tamarisk stem (Tamarix tetrandra) .  micrograph of a section through a  stem.  The magnification is 32 times when printed 10 inches wide.
    K07Tamarisk32x.tif
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 200 times when printed 10 inches wide.
    K07sweet-flag200x-10.tif
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 200 times when printed 10 inches wide.
    K07sweet-flag200x-1.tif
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 25 times when printed 10 inches wide.
    K07sweet-flag.tif
  • Transverse section of a Acacia dealbata (Silver Wattle) stem. Silver Wattle is a species of Acacia, native to southeastern Australia.  It is a fast growing evergreen tree or shrub growing up to 30 m tall, typically a pioneer species after fire.  Acacia dealbata is widely cultivated as an ornamental plant.  Light micrograph of a section through a stem.  The magnification is 200 times when printed 10 inches wide.
    K07SilverWattle200x06.tif
  • Transverse section of a King Solomon's-seal (Polygonatum muliiflorum) stem. Polygonatum (King Solomon's-seal, Solomon's Seal) is a genus of about 50 species of flowering plants within the family Ruscaceae, formerly classified in the lily family Liliaceae.  Light micrograph of a section through a  stem.  The magnification is 32 times when printed 10 inches wide.
    K07KingSolomon32x.tif
  • Transverse section stem of Ivy (Hedera) a dicotyledon.  Light micrograph of a section through an ivy stem.  The magnification is 200 times when printed 10 inches wide.
    K07ivy-stem200x-9.tif
  • Transverse section of a Cow Parsley stem. Cow Parsley (Anthriscus sylvestris)also known as Wild Chervil, Wild Beaked Parsley, and Keck.  It is a herbaceous biennial or short-lived perennial. It is native to Europe.  Light micrograph of a section through a  stem.  The magnification is 32 times when printed 10 inches wide.
    K07CowParsley32x.tif
  • Surface of  a mature cannabis stem. The image is 6mm wide.  The different layers of the stem have been given different colors.  The layer that is several cells below the skin is the section of thick-walled fiber cells.  This highlights one potential uses of cannabis: an excellent source of fibers for paper, rope, and fabric.  The legalizing of cannabis in the United States opens research in this very profitable aspect of the plant. Field of view of this image is 2 mm.
    K13SEM-pot-canna52.jpg
  • Colored-enhanced scanning electron micrograph (SEM) of a section through a xylem vessel in a cannabis stem. The xylem transports water and mineral nutrients from the roots throughout the plant. The walls of the xylem vessels are strengthened with lignin  loops, a woody substance that helps to support the plant. Magnification: x1200 when printed at 10 centimeters wide.
    K13SEM-canna66.jpg
  • Transverse section of an Umbrella Pine Stem (Sciadopitys verticillata) .  Light micrograph of a section through a  stem.  The Umbrella Pine is also called Koyamaki (Sciadopitys verticillata) or Japanese Umbrella-pine, is a unique conifer endemic to Japan. It is the sole member of the family Sciadopityaceae and genus Sciadopitys, a living fossil with no close relatives, and known in the fossil record for about 230 million years. The magnification is 32 times when printed 10 inches wide.
    K07umbrellapine32x.tif
  • Sweet Flag Stem (Acorus calamus)  Light micrograph of a section through a fig tree stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The rootstock of this aromatic plant are used as a natural insecticide and an ingredient of perfumes. The roots  were used for various medicinal purposes, and reportedly induce hallucinations if eaten in sufficiently large quantities. In modern times the active chemical in the plant have been identified as Beta-asarone,  a carcinogen.  The Food & Drug Administration (FDA) has banned the use of the sweet flag as a food additive. The magnification is 200 times when printed 10 inches wide.
    K07sweet-flag200x-4.tif
  • A cross section of a mature stem.   The different layers of the stem have been given different colors.  The layer that is several cells below the skin is the section of thick-walled fiber cells.  This highlights one potential uses of cannabis: an excellent source of fibers for paper, rope, and fabric.  The legalizing of cannabis in the United States opens research in this very profitable aspect of the plant. Field of vie of this image is 1 mm.
    K13SEM-pot-canna51.jpg
  • Transverse section of Hogweed Stem (Heracleum mantegazzianum).  Light micrograph of a section through a stem. Hogweed is a very invasive plant.  The magnification is 200 times when printed 10 inches wide.
    K07hogweed200x01.tif
  • A cross section of a mature stem.   The different layers of the stem have been given different colors.  The layer that is several cells below the skin is the section of thick-walled fiber cells.  This highlights one potential uses of cannabis: an excellent source of fibers for paper, rope, and fabric.  The legalizing of cannabis in the United States opens research in this very profitable aspect of the plant. Field of vie of this image is 5 mm.
    K13SEM-pot-canna48.jpg
  • A scanning electron microscope image of the stem of a cannabis (Cannabis sativa) plant. There are a number of different types of cell structures called trichomes in this image. The thorn-like trichomes use a physical defense while the circular glandular trichomes use chemical defense. Combined, these defenses keep insects and animals from eating the plant. Each circular glandular trichome is 50 um in diameter in this image.
    K170607stemA005pan.jpg
  • An optical image of the cross section of a cannabis stem.  The center of the structure is where the pith cells are located, in a mature leaf the center section would be completely filled with pith cells. This section has been dyed with neutral red.  This picture of thestem shows a 4 mm wide field of view.
    K13SEM-cannabis79.jpg
  • A scanning electron microscope image of the stem of a cannabis (Cannabis sativa) plant. There are a number of different types of cell structures called trichomes in this image. The thorn-like trichomes use a physical defense while the circular glandular trichomes use chemical defense. Combined, these defenses keep insects and animals from eating the plant. Each circular glandular trichome is 50 um in diameter in this image.
    K170607stemC010pan.jpg
  • A scanning electron microscope image of the stem of a cannabis (Cannabis sativa) plant. There are a number of different types of cell structures called trichomes in this image. The thorn-like trichomes use a physical defense while the circular glandular trichomes use chemical defense. Combined, these defenses keep insects and animals from eating the plant. Each circular glandular trichome is 50 um in diameter in this image.
    K170607stemA005panB.jpg
  • Transverse section of Stinking Hellebore (Helleborus foetidus).  A poisonous plant.  Light micrograph of a section through a stem.  The magnification is 200 times when printed 10 inches wide.
    K07Stinking200x03.tif
  • Transverse section of Stinking Hellebore (Helleborus foetidus).  A poisonous plant.  Light micrograph of a section through a stem.  The magnification is 200 times when printed 10 inches wide.
    K07Stinking200x02.tif
  • A scanning electron microscope image of the stem of a cannabis (Cannabis sativa) plant. There are a number of different types of cell structures called trichomes in this image. The thorn-like trichomes use a physical defense while the circular glandular trichomes use chemical defense. Combined, these defenses keep insects and animals from eating the plant. Each circular glandular trichome is 50 um in diameter in this image.
    K170607stemC010panB.jpg
  • Transverse section of Stinking Hellebore (Helleborus foetidus).  A poisonous plant.  Light micrograph of a section through a stem.  The magnification is 32 times when printed 10 inches wide.
    K07Stinking32x.tif
  • Light micrograph of a section through a bamboo stem. The large holes are cross-sections of xylem, vascular tissue used to transport water and minerals from the roots.  The magnification is 32 times when printed 10 inches wide.
    K07bamboo.tif
  • Transverse section of Stinking Hellebore (Helleborus foetidus).  A poisonous plant.  Light micrograph of a section through a stem.  The magnification is 200 times when printed 10 inches wide.
    K07Stinking200x04.tif
  • A scanning electron microscope image of the stem of a young 5-day-old cannabis (Cannabis sativa) plant stem. This image is a transverse section of the stem showing the different cell types. Cannabis is also known as help, and is a source of strong fibers for clothing, paper, and rope. This fast growing plant shows promise for being a cheep source of fibers in the future. This image shows a horizontal field of view of .2mm.
    K170512stemC027A.jpg
  • A scanning electron microscope image of the stem of a young 5-day-old cannabis (Cannabis sativa) plant stem. This image is a transverse section of the stem showing the different cell types. Cannabis is also known as help, and is a source of strong fibers for clothing, paper, and rope. This fast growing plant shows promise for being a cheep source of fibers in the future. This image shows a horizontal field of view of .2mm.
    K170512stemC027B.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-cannnabis65.jpg
  • An X-ray of an Acanthus flowering stem (Acanthus mollis). Native to the Mediterranean with lobed leaves with spiny margins and showy spikes. This plant is also called Bear's breech. A design patterned after acanthus leaves is often found on Corinthian columns.
    X11-acanthusflower1C.jpg
  • An X-ray of an Acanthus flowering stem (Acanthus mollis). Native to the Mediterranean with lobed leaves with spiny margins and showy spikes. This plant is also called Bear's breech. A design patterned after acanthus leaves is often found on Corinthian columns.
    X11-acanthusflower1BW.jpg
  • An X-ray of an Acanthus flowering stem (Acanthus mollis). Native to the Mediterranean with lobed leaves with spiny margins and showy spikes. This plant is also called Bear's breech. A design patterned after acanthus leaves is often found on Corinthian columns.
    X11-acanthusflower1D.jpg
  • An optical image of the cross section of a leaf support (petiole). The notch in the structure points up and is believed to be associated with water flow over the leaf structure.  The center of the structure is where the pith cells are located, in a mature leaf the center section would be completely filled with pith cells. This section has been dyed with neutral red and brilliant crystal blue.  This picture of the petiole shows a 3mm wide field of view.  This sample was stained to highlight cell structures.
    K13SEM-cannabis49.jpg
  • An optical image of the cross section of a leaf support (petiole). The notch in the structure points up and is believed to be associated with water flow over the leaf structure.  The center of the structure is where the pith cells are located, in a mature leaf the center section would be completely filled with pith cells. This section has been dyed with neutral red and brilliant crystal blue.  This picture of the petiole shows a 3mm wide field of view.  This sample was stained to highlight cell structures.
    K13SEM-cannabis21.jpg
  • Butchers Broom (box holly) Ruscus aculeatus. Butcher's broom is an aromatic, diuretic, mildly laxative herb that reduces inflammation and constricts the veins.  The plant is considered a medicinal herb since medieval times.  Magnifation is 32 times when printed 10 inches wide.
    K07butchers-broom.tif
  • Butchers Broom (box holly) Ruscus aculeatus. Butcher's broom is an aromatic, diuretic, mildly laxative herb that reduces inflammation and constricts the veins.  The plant is considered a medicinal herb since medieval times.  Magnifation is 200 times when printed 10 inches wide.
    K07butchers-broom200x1.tif
  • Butchers Broom (box holly) Ruscus aculeatus. Butcher's broom is an aromatic, diuretic, mildly laxative herb that reduces inflammation and constricts the veins.  The plant is considered a medicinal herb since medieval times.  The magnification is 200 times when printed 10 inches wide.
    K07butchers-broom200x2.tif
  • An x-ray of Hardneck garlic scapes.  These leafless stems of the garlic plant (Allium sativum) are edible and used as a vegetable.
    K15X-garlic-comp02C.jpg
  • An x-ray of Hardneck garlic scapes.  These leafless stems of the garlic plant (Allium sativum) are edible and used as a vegetable.
    K15X-garlic-comp01E.jpg
  • An x-ray of Hardneck garlic scapes.  These leafless stems of the garlic plant (Allium sativum) are edible and used as a vegetable.
    K15X-garlic-comp02A.jpg
  • An x-ray of Hardneck garlic scapes.  These leafless stems of the garlic plant (Allium sativum) are edible and used as a vegetable.
    K15X-garlic-comp01D.jpg
  • An x-ray of Hardneck garlic scapes.  These leafless stems of the garlic plant (Allium sativum) are edible and used as a vegetable.
    K15X-garlic-comp01C.jpg
  • An x-ray of Hardneck garlic scapes.  These leafless stems of the garlic plant (Allium sativum) are edible and used as a vegetable.
    K15X-garlic-comp01B.jpg
  • An x-ray of Hardneck garlic scapes.  These leafless stems of the garlic plant (Allium sativum) are edible and used as a vegetable.
    K15X-garlic-comp01A.jpg
  • An x-ray of Hardneck garlic scapes.  These leafless stems of the garlic plant (Allium sativum) are edible and used as a vegetable.
    K15X-garlic-comp02B.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant bud.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-A01color-CSC.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    K170614leafC016pan03.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The head o fthe trichome is 60 um in diameter.
    K170607stemE038A-pan.jpg
  • False color Scanning Electron Micrograph (SEM) of the underside of a new marijuana leaf (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The filed of view in this image is 4 mm wide.
    K170509cryotest-zhp-alcuE0.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170614leafH046pan.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. Magnification: 52X when printed 10 cm wide.
    170613gland-triF031pan3.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170613cola-bladeH043pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170613cola-bladeA002pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609BractK035pan.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609bractC013pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609bractB008PANtk.jpg
  • X-ray Habanero Chili Pepper.The habanero chili is one of the more intensely piquant species of chili peppers of the Capsicum genus. Unripe habaneros are green, and they color as they mature.
    K15X-Habanero01C.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the bottom surface of a cannabis (Cannabis sativa) plant.  Magnification is 90x when printed 10 cm wide.
    K14SEM-canna-29B.jpg
  • A false color SEM image of a Calcium oxalate crystal.  Even a small dose of calcium oxalate is enough to cause intense sensations of burning in the mouth and throat.  Commonly found in popular houseplants, such as Dumbcane, the crystals effects or symptoms may last for a week or more, making calcium oxalate crystals a non-desirable ingredient in medicinal cannabis.  It is surprising that calcium oxalate is rarely discussed in literature about medical marijuana (cannabis).  There crystals are fairly common in plants, as they make it hard for grazing animals to eat the plant. Image is 20 um wide.
    K13SEM-pot-oxalate01A.jpg
  • A scanning electron microscope image of the football shaped bract of the female  cannabis (Cannabis sativa) flower. The oval bract structure houses the stigma and is responsible for producing seeds when the flower has been pollinated. This bract structure is also the location of the highest concentration of cannabinoid compounds on the plant.  This site is also the location of the highest concentration of THC. There are a number of different types of cell structures called trichomes in this image. The thorn-like trichomes use a physical defense while the circular glandular trichomes use chemical defense. Combined, these defenses keep insects and animals from eating the plant. Each circular glandular trichome is 50 um in diameter in this image. The filed of view of this image is 3 mm wide.
    K170609bractF028panA.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant, showing glandular cells, called trichomes. These trichomes are on teh surface of the leaf. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The circular cell structure a tthe center of the frame is 40 um in diameter.
    K170524CPD-triCN101mix.jpg
  • A scanning electron microscope image of the football shaped bract of the female  cannabis (Cannabis sativa) flower. The oval bract structure houses the stigma and is responsible for producing seeds when the flower has been pollinated. This bract structure is also the location of the highest concentration of cannabinoid compounds on the plant.  This site is also the location of the highest concentration of THC. There are a number of different types of cell structures called trichomes in this image. The thorn-like trichomes use a physical defense while the circular glandular trichomes use chemical defense. Combined, these defenses keep insects and animals from eating the plant. Each circular glandular trichome is 50 um in diameter in this image.
    K170517bud-k070panA1C.jpg
  • A scanning electron microscope image of the football shaped bract of the female  cannabis (Cannabis sativa) flower. The oval bract structure houses the stigma and is responsible for producing seeds when the flower has been pollinated. This bract structure is also the location of the highest concentration of cannabinoid compounds on the plant.  This site is also the location of the highest concentration of THC. There are a number of different types of cell structures called trichomes in this image. The thorn-like trichomes use a physical defense while the circular glandular trichomes use chemical defense. Combined, these defenses keep insects and animals from eating the plant. Each circular glandular trichome is 50 um in diameter in this image.
    K170517bud-k070panA1A.jpg
  • A scanning electron microscope image of the football shaped bract of the female  cannabis (Cannabis sativa) flower. The oval bract structure houses the stigma and is responsible for producing seeds when the flower has been pollinated. This bract structure is also the location of the highest concentration of cannabinoid compounds on the plant.  This site is also the location of the highest concentration of THC. There are a number of different types of cell structures called trichomes in this image. The thorn-like trichomes use a physical defense while the circular glandular trichomes use chemical defense. Combined, these defenses keep insects and animals from eating the plant. Each circular glandular trichome is 50 um in diameter in this image.
    K170517bud-H062panC.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. Thise is a low glandular trichomes that is close to the surface of the leaf. It secretes a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 20 um in diameter.
    K170510stem058thric.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170614leafH046pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170613cola-bladeH043pan1.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609BractN053PANtk2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609BractM046pan2.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609BractD011pantk.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609bractC013pan1.jpg
  • Color-enhanced Scanning Electron Micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
    170609BractA002pantk2.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 100x when printed 10 cm wide.
    K14SEM-canna-44.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the bottom surface of a cannabis (Cannabis sativa) plant.  Magnification is 90x when printed 10 cm wide.
    K14SEM-canna-29.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Magnification is 180x when printed 10 cm wide.
    K14SEM-canna-19.jpg
  • A false color SEM image of a Calcium oxalate crystal.  Even a small dose of calcium oxalate is enough to cause intense sensations of burning in the mouth and throat.  Commonly found in popular houseplants, such as Dumbcane, the crystals effects or symptoms may last for a week or more, making calcium oxalate crystals a non-desirable ingredient in medicinal cannabis.  It is surprising that calcium oxalate is rarely discussed in literature about medical marijuana (cannabis).  There crystals are fairly common in plants, as they make it hard for grazing animals to eat the plant. Image is 70 um wide.
    K13SEM-pot-oxalate02.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-multiBSE-001canna-14.jpg
  • Cannabis plant. Colored scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes are also present. These are capitate trichomes that have stalks. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  Magnification is 180x when printed 10 cm wide.
    K13SEM-pot-multiBSE-001.jpg
  • X-Ray of a three Habanero Peppers (Capsicum chinense) .  The habanero chile is one of the hottest peppers consumed by people and rates between 100,000 and 300,000 Scoville units.   This pepper originated in South America, but when the Latin name was applied it was belied to have originated in china ? thus the Latin name of china that is now associated with this pepper.
    x07habaneroblue.jpg
  • Close up of the leaf of a cannabis plant. The trichomes on the bud of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes. These stalked trichomes have glands at the sop that store THC. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  The width of the ball like structure is 90 um, or about the width of a human hair.
    K18optical-canna-bud20171011A.jpg
  • Close up of the leaf of a cannabis plant. The trichomes on the bud of a cannabis (Cannabis sativa) plant.  Glandular cells called trichomes. These stalked trichomes have glands at the sop that store THC. These trichomes secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.  The width of the ball like structure is 90 um, or about the width of a human hair.
    K18optical-trichomeCanna2017-10-10A.jpg
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Ted Kinsman

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