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  • X-ray Pitcher Plant Flowers. Pitcher plant, Sarracenia purpurea. A carnivorous plant from the SE US that traps insects in its pitcher and digests them. This plant was collected in New York State.
    K15X-pitcherplantflowers03B.jpg
  • X-ray Pitcher Plant Flowers. Pitcher plant, Sarracenia purpurea. A carnivorous plant from the SE US that traps insects in its pitcher and digests them. This plant was collected in New York State.
    K15X-pitcherplantflowers03A.jpg
  • X-ray Pitcher Plant Flowers. Pitcher plant, Sarracenia purpurea. A carnivorous plant from the SE US that traps insects in its pitcher and digests them. This plant was collected in New York State.
    K15X-pitcherplant01black-white.jpg
  • X-ray Pitcher Plant Flowers. Pitcher plant, Sarracenia purpurea. A carnivorous plant from the SE US that traps insects in its pitcher and digests them. This plant was collected in New York State.
    K15X-pitcherplant01A2.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabisleafs01-05B.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis013B.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis006B.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis006A.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis002.jpg
  • The male flower of the cannabis plant (Cannabis sativa) plant photographed in a scanning electron microscope. Magnification when printed 10 inches wide is x50.
    170524CPD-stemL086_2.jpg
  • X-ray Pitcher Plant Flowers. Pitcher plant, Sarracenia purpurea. A carnivorous plant from the SE US that traps insects in its pitcher and digests them. This plant was collected in New York State.
    K15X-pitcherplantflowers03C.jpg
  • X-ray Pitcher Plant Flowers. Pitcher plant, Sarracenia purpurea. A carnivorous plant from the SE US that traps insects in its pitcher and digests them. This plant was collected in New York State.
    K15X-pitcherplant01B.jpg
  • X-ray Pitcher Plant Flowers. Pitcher plant, Sarracenia purpurea. A carnivorous plant from the SE US that traps insects in its pitcher and digests them. This plant was collected in New York State.
    K15X-pitcherplant01A.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18XcannabisberryB.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis002D.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis-planttopC.jpg
  • X-ray Pitcher Plant Flowers. Pitcher plant, Sarracenia purpurea. A carnivorous plant from the SE US that traps insects in its pitcher and digests them. This plant was collected in New York State.
    K15X-pitcherplant01cyano.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabiso8BottomA.jpg
  • A Male Cannabis Plant (Cannabis sativa) in bloom. The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18XcannabisMale17001A.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabisleafs01-05D.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabisleafs01-05A.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18XcannabisbudCU002A.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18XcannabisberryA.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis013A.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis006C.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis002C.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis-planttopB.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
  • False color Scanning Electron Micrograph (SEM) of the new growth at the tip of the bud of a marijuana plant (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-alcuK066pan.jpg
  • The male flower of the cannabis plant (Cannabis sativa) plant photographed in a scanning electron microscope. Magnification when printed 10 inches wide is x50.
    170524CPD-stemL086_1.jpg
  • The male flower of the cannabis plant (Cannabis sativa) plant photographed in a scanning electron microscope. Magnification when printed 10 inches wide is x50.
    170524CPD-stemK075pan2.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18XcannabisbudCU002B.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis008A.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis002B.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis-planttopA.jpg
  • The male flower of the cannabis plant (Cannabis sativa) plant photographed in a scanning electron microscope. Magnification when printed 10 inches wide is x50.
    170524CPD-stemK075pan1.jpg
  • X-Ray of the  Chinese lantern plant, (Physalis alkekengi) also called the winter cherry or bladder cherry is a member of the potato family.  The chinese lantern plant is used mostly for decorative purposes, but is also harvested for its fruit. The fruit has twice the Vitamin C of lemons and resembles a blonde-red cherry tomato.
    K11Xlatern2B.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis013C.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis008C.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
  • 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
  • X-ray Hops plant. Hop flowers on the vine (Humuluslupulus). This plant grows throughout Europe and the Americas.  Hops is extensively cultivated for the production of beer. Preparations of its flowers are used in herbal medicine to aid digestion and to relieve fever.
    K15X-hops-comp01C.jpg
  • X-ray Hops plant. Hop flowers on the vine (Humuluslupulus). This plant grows throughout Europe and the Americas.  Hops is extensively cultivated for the production of beer. Preparations of its flowers are used in herbal medicine to aid digestion and to relieve fever.
    K15X-hops-comp01.jpg
  • Scanning Electron Micrograph (SEM) of the root cap of a corn plant. The root tip has only grown for a few days. Magnification: 270x.
    K14-SEM-cornroot-tip001.jpg
  • X-Ray of the  Chinese lantern plant, (Physalis alkekengi) also called the winter cherry or bladder cherry is a member of the potato family.  The chinese lantern plant is used mostly for decorative purposes, but is also harvested for its fruit. The fruit has twice the Vitamin C of lemons and resembles a blonde-red cherry tomato.
    K11Xlatern2C.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabisleafs01-05C.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18XcannabisbudCU002C.jpg
  • An X-Ray of a Cannabis Plant (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18Xcannabis008B.jpg
  • The male flower of the cannabis plant (Cannabis sativa) imaged with a scanning electron microscope (SEM). This image shows a field of view of 6 mm in the horizontal direction.
    K170515SEMAA011Pan1.jpg
  • The male flower of the cannabis plant (Cannabis sativa)
    K17maleflowermaleMG_7593-Edit.jpg
  • An X-Ray of a Cannabis Leaf (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18XcannabisLeaf01DA.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.
    K170607stemC010panB.jpg
  • The male flower of the cannabis plant (Cannabis sativa)
    K17maleflowermacro-optical-7.jpg
  • The male flower of the cannabis plant (Cannabis sativa)
    K17maleflowermacro-optical-9.jpg
  • The male flower of the cannabis plant (Cannabis sativa)
    K17maleflowermacro-optical-6.jpg
  • An X-Ray of a Cannabis Leaf (Cannabis sativa). The plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug.
    K18XcannabisLeaf01DB.jpg
  • The male flower of the cannabis plant (Cannabis sativa)
    K17maleflowermaleflower1-5x.jpg
  • X-ray Hops plant. Hop flowers on the vine (Humuluslupulus). This plant grows throughout Europe and the Americas.  Hops is extensively cultivated for the production of beer. Preparations of its flowers are used in herbal medicine to aid digestion and to relieve fever.
    K15X-hops-comp01B.jpg
  • An X-ray of an orchid plant (Paphiopedilum sp.)
    x07-orchidplant-20GR.jpg
  • An xray of a peppermint plant (Mentha piperita).
    K11Xmint1.jpg
  • An xray of a peppermint plant (Mentha piperita).
    K11Xmint2.jpg
  • Scanning Electron Micrograph (SEM) of a grain of pollen from Cannabis sativa plant. The pollen is 20 um in diameter and is scattered by air currents.  The pollen of the cannabis plant is almost identical to the hops plant, a close relative.
    K170524CPDpollen010A.jpg
  • Jack-in-the-pulpit X-ray (Arisaema triphyllum) is a common perennial found in swamps and rich, moist woods of eastern North America. The American Indians used this plant medicinally for a large variety of ailments.
    K11-xjackpulp3.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.
    K170510stemApan1.jpg
  • A SEM image of the edge of a leaf shows a calcium oxalate crystal. These crystals are found throughout the plant and are responsible for throat irritation when medical marijuana is smoked. Plants that have too many oxalate crystals are good candidates for modern THC extraction techniques. Calcium oxalate crystals in plants are called raphides. Humans have similar calcium crystals that can appear as kidney stones. These crystals help remove calcium build up in the tissues and make it undesirable for grazing animals to eat the plant. Magnification is x120 on the printed page.
    K170406z056.jpg
  • A cannabis seedling showing the first set of true leaves. Imaged with a scanning electron microscope (SEM). False color has been applied. The marijuana 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.
    K170428-4dayPA003A.jpg
  • Jack-in-the-pulpit X-ray (Arisaema triphyllum) is a common perennial found in swamps and rich, moist woods of eastern North America. The American Indians used this plant medicinally for a large variety of ailments.
    K11-xjackpulp1.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.
    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 .3mm.
    K170510stemApan1C.jpg
  • A close up of the seed leaf or cotyledon of a cannabis plant. Imaged with a scanning electron microscope (SEM). The surface of the cotyledon. The cotyledon is the scientific name for the fist two leaves the plant makes. In reality, these two leaves are actually folded up inside the seed, so this structure is often called the seed leaves. It is important that the seeding gets these leaves unfolded and oriented correctly quickly to start photosynthesis and start False color has been applied. The marijuana plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The filed of view in this image is 1.2 mm wide.
    K170428-4dayPD024.jpg
  • A cannabis seedling showing the first set of true leaves. Imaged with a scanning electron microscope (SEM). False color has been applied. The marijuana 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.
    K170428-4dayPA003B.jpg
  • Crystals in the roots of the Cannabis plant. The exact composition of these are currently unknown and their role in the life cycle of the plant is a mystery. Why are they there? What do they do? What is the chemical composition of the crystals? Just a few of the questions that seem to be a daily occurrence when looking at the cannabis plant with this level of magnification.<br />
Magnification on the printed page is 4300x at 9 inches wide.
    170614Root-crystalscombo.jpg
  • X-Ray of Giant swan milkweed (Gomphocarpus physocarpus): Asclepias physocarpa is the former botanical name, Goose plant, Giant swan milkweed, Hairy balls, Family jewels, Oscar, Cotton-bush, Balloon plant
    K15X-giantmilkweed003A.jpg
  • Crystals in the roots of the Cannabis plant. The exact composition of these are currently unknown and their role in the life cycle of the plant is a mystery. Why are they there? What do they do? What is the chemical composition of the crystals? Just a few of the questions that seem to be a daily occurrence when looking at the cannabis plant with this level of magnification.<br />
Magnification on the printed page is 4300x at 9 inches wide.
    K170614Root-crystalscombo.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
  • 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
  • A cannabis seedling showing the first set of true leaves. Imaged with a scanning electron microscope (SEM). False color has been applied. The marijuana plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The filed of view in this image is 3 mm wide.
    K170429cryo-3-015BW.jpg
  • Scanning Electron Micrograph (SEM) of a grain of pollen from Cannabis sativa plant. The pollen is 20 um in diameter and is scattered by air currents.  The pollen of the cannabis plant is almost identical to the hops plant, a close relative.
    K17SEM-canpollen025.jpg
  • Fluorescent light is used to image the bud of a cannabis plant. The trichomes on the bud of a cannabis (Cannabis sativa) plant are full of Tetrahydrocannabinol (THC)and glow green. The chlorophyll filled cells of the leaf glow red. The width of the green trichome heads is 90 um, or about the width of a human hair. This is an example of a plant that is past harvest time as the THC laden trichome heads have started to shrivel.
    K18glow-cannabisbud17-10ZSA.jpg
  • A cannabis seedling showing the first set of true leaves. Imaged with a scanning electron microscope (SEM). False color has been applied. The marijuana 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.
    K170428-4dayPA003C.jpg
  • A cannabis seedling showing the first set of true leaves. Imaged with a scanning electron microscope (SEM). False color has been applied. The marijuana plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The filed of view in this image is 5 mm wide.
    K170428-4dayP.jpg
  • A cannabis seedling showing the first set of true leaves. Imaged with a scanning electron microscope (SEM). False color has been applied. The marijuana plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The filed of view in this image is 8 mm wide.
    K170428-4day016.jpg
  • A seedling of the coca plant (Erythroxylon coca). The leaves contain the stimulant chemical cocaine. They can be chewed to produce a mild stimulant effect, or made into an infusion. The plant is native to the slopes of the Andes in South America, where indigenous people have used it for centuries. The leaves can also be processed to extract pure cocaine. For this reason the cultivation of the plant is controversial.
    K17cocaineplant-5.jpg
  • A seedling of the coca plant (Erythroxylon coca). The leaves contain the stimulant chemical cocaine. They can be chewed to produce a mild stimulant effect, or made into an infusion. The plant is native to the slopes of the Andes in South America, where indigenous people have used it for centuries. The leaves can also be processed to extract pure cocaine. For this reason the cultivation of the plant is controversial.
    K17cocaineplant-2.jpg
  • X-Ray of Giant swan milkweed (Gomphocarpus physocarpus): Asclepias physocarpa is the former botanical name, Goose plant, Giant swan milkweed, Hairy balls, Family jewels, Oscar, Cotton-bush, Balloon plant
    K15X-giantmilkweed003Acrop.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
  • A cannabis seedling showing the first set of true leaves. Imaged with a scanning electron microscope (SEM). False color has been applied. The marijuana plant produces tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The filed of view in this image is 3 mm wide.
    K170429cryo-3-015.jpg
  • A seedling of the coca plant (Erythroxylon coca). The leaves contain the stimulant chemical cocaine. They can be chewed to produce a mild stimulant effect, or made into an infusion. The plant is native to the slopes of the Andes in South America, where indigenous people have used it for centuries. The leaves can also be processed to extract pure cocaine. For this reason the cultivation of the plant is controversial.
    K17cocaineplant-7.jpg
  • A seedling of the coca plant (Erythroxylon coca). The leaves contain the stimulant chemical cocaine. They can be chewed to produce a mild stimulant effect, or made into an infusion. The plant is native to the slopes of the Andes in South America, where indigenous people have used it for centuries. The leaves can also be processed to extract pure cocaine. For this reason the cultivation of the plant is controversial.
    K17cocaineplant-6.jpg
  • 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
  • Fluorescent light is used to image the bud of a cannabis plant. The trichomes on the bud of a cannabis (Cannabis sativa) plant are full of Tetrahydrocannabinol (THC)and glow green. The chlorophyll filled cells of the leaf glow red. The width of the green trichome heads is 90 um, or about the width of a human hair. This is an example of a plant that is past harvest time as the THC laden trichome heads have started to shrivel.
    K18glow-cannabisCS-442A.jpg
  • X-ray of Pacific Mistletoe (Phoradendron villosum) collected in California, USA Mistletoe is a partial parasite. It bears evergreen leaves that carry out some photosynthesis of their own, while it relies on the host plant mainly for mineral nutrients from the ground.
    K14X-mistlletoe-1C.jpg
  • 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
  • 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
  • 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 false color x-ray of teh cattail plant ((Typha latifolia).
    K15Xcattail01B.jpg
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