Phloem Collection (#4)

Reed canary grass stem, light micrograph
Reed canary grass stem. Light micrograph of a section through a reed canary grass stem (Phalaris arundinacea). Vascular bundles (oval yellow and red structures)

Cotton plant root, light micrograph
Cotton plant root. Light micrograph of a transverse section through a root of the cotton plant (Gossypium hirsutum). The layers from outer to centre (some very thin)

Dragon tree stem, light micrograph
Dragon tree stem. Light micrograph of a section through a dragon tree stem (Dracaena draco). Vascular bundles (round dark structures) can be seen containing xylem (larger openings)

Peanut plant stem, light micrograph
Peanut plant stem. Light micrograph of a transverse section through a stem of the peanut plant (Arachis hypogaea). Below the stems outer layer (epidermis) is a cortex of parenchyma cells (blue)

Sarsaparilla plant stem, light micrograph
Maize root. Polarised light micrograph of a section through the root of a sarsaparilla plant (Smilax regelii) showing a vascular cylinder

Stinging nettle stem, light micrograph
Stinging nettle stem. Polarised light micrograph of a transverse section through a stem of the stinging nettle plant (Urtica dioica)

Tea leaf, light micrograph
Tea leaf. Light micrograph of a cross-section through a tea (Camellia sinensis) leaf. The upper and lower epidermis on the surfaces of the leaf are blue

Kidney bean stem, light micrograph
Kidney bean stem. Light micrograph of a section through the stem of a kidney bean (Phaseolus vulgaris) plant. The outer layer is the cuticle (brown), with a cortex of parenchyma (yellow) beneath it

Broad bean root, light micrograph
Broad bean root. Light micrograph of a transverse section through the young root of a broad bean (Vicia faba) plant. The outer epidermis is covered in root hairs

Kidney bean root, light micrograph
Kidney bean root. Light micrograph of a section through the root of a kidney bean (Phaseolus vulgaris) plant. At centre is the pith (blue)

Common broom stem, light micrograph
Common broom stem. Light micrograph of a transverse section through the stem of a common broom (Salicornia europaea) plant

Phloem plant cells, light micrograph
Phloem plant cells. Light micrograph of a longitudinal section through phloem tissue in a Cucurbita plant. Most of this tissue is large phloem tubes (stained blue)

Oleander stem, light micrograph
Oleander stem. Light micrograph of a cross-section through the stem of an oleander (Nerium oleander) tree. The outer layer is a thick cuticle (yellow) and then cork cambium (blue-green)

Young pine tree stem, light micrograph
Young pine tree stem. Light micrograph of a transverse section through a two and a half-year-old stem of a pine tree (Pinus sp.)

Black burdock stem, light micrograph
Black burdock stem. Polarised light micrograph of a transverse section through the stem of a black burdock (Arctium lappa) plant

Goosefoot root, light micrograph
Goosefoot root. Light micrograph of a section through the root of a goosefoot (Cheopodium sp.) plant. Xylem cells, which transport water around the plant are red

Dyers greenweed stem, light micrograph
Dyers greenweed stem. Polarised light micrograph of a transverse section through the stem of a dyers greenweed (Genista tinctoria) plant

Yew tree root, light micrograph
Yew tree root. Light micrograph of a transverse section through a root of a yew tree, (Taxus baccata). Most of the outer cortex (dark blue)

Marsh samphire stem, light micrograph
Marsh samphire stem. Light micrograph of a transverse section through the stem of a marsh samphire, (Salicornia europaea) plant. This is a succulent, xerophytic, halophyte plant

Ginkgo leaf stalk, light micrograph
Ginkgo leaf stalk. Light micrograph of a transverse section through the leaf stalk (petiole) of a ginkgo tree (Ginkgo biloba)

Begonia stem, light mictograph
Begoinia stem. Light micrograph of a transverse section through the stem of a begonia (Begonia sp.) plant. At centre is a large area of pith, which contains starch grains (orange) a store of energy

Blackcurrant plant stem, light micrograph
Blackcurrant plant stem. Light micrograph of a cross-section through the stem of a blackcurrant (Ribes nigrum) plant. The outer cortex (blue and pale brown) is made of cork cambium tissue

Sunflower root, light micrograph
Sunflower root. Polarised light micrograph of a transverse section through the root of a sunflower (Helianthus annuus) plant

Spikenard stem, light micrograph
Spikenard stem. Light micrograph of a cross-section through the stem of a Spikenard (Aralia sp.) tree. The dark red cells just beneath the surface bark are collenchyma cells

Buttercup root, light micrograph
Buttercup root. Light micrograph of a transverse section through the root of a buttercup (Ranunculus sp.) plant. At centre is the vascular bundle, comprising xylem (red) and phloem (blue) tissues

Rose stem, light micrograph
Rose stem. Light micrograph of a cross-section through the stem of a rose (Rosa sp.). The three triangular protrusions are thorns, which protect the plant from being eaten by animals

Tomato root, light micrograph
Tomato root. Light micrograph of a transverse section through the centre root of a tomato (Lycopersicum esculentum) plant. Xylem cells, which transport water around the plant, are red

Eucalyptus leaf, light micrograph
Eucalyptus leaf. Light micrograph of a cross-section through the midrib of a eucalyptus (Eucalyptus globulus) leaf. This xerophytic (arid-adapted)

Cedar tree stem, light micrograph
Cedar tree stem. Light micrograph of a transverse section through a stem of a cedar tree (Thujopsis dolobrata). The four ridges on the outer surface are microphyllous leaves

Squash root, light micrograph
Squash root. Light micrograph of a transverse section through a squash (Cucubita sp.) root. The large vessels (red) are xylem cells, which transport water. Parenchyma tissue is blue

Xylem and phloem plant tissue, SEM
Xylem and phloem plant tissue. Coloured scanning electron micrograph (SEM) of a transverse section through the stem of a woody plant

Plant parasite, light micrograph
Plant parasite. Polarised light micrograph of a transverse section through a plant stem (left) entwined by the common dodder (Cuscuta sp.) parasitic plant (round, right)

Radish root, light micrograph
Radish root. Light micrograph of a transverse section through the root of a radish (Raphanus sativa) plant. The outer layer is cork cambium (red)

Dog rose stem, light micrograph
Dog rose stem. Polarised light micrograph of a cross-section through the stem of a dog rose (Rosa canina) plant. The outer cortex (black and red) is made of cork cambium tissue

Sunflower leaf, light micrograph
Sunflower leaf. Light micrograph of a transverse section through the midrib of a sunflower (Helianthus annuus) leaf. The upper and lower epidermis on the surfaces of the leaf are blue

Eucalyptus stem, light micrograph
Eucalyptus stem. Light micrograph of a transverse section through a one-year-old stem of a Eucalyptus (Eucalyptus globulus) plant

Black pepper stem, light micrograph
Black pepper stem. Polarised light micrograph of a transverse section through the stem of a black pepper (Pipa nigrum) plant

Ginger leaf, light micrograph
Ginger leaf. Light micrograph of a transverse section through the midrib of a ginger (Zingiber officinale) leaf. The lower and upper epidermis (blue)

Japanese sago palm root, light micrograph
Japanese sago palm root. Light micrograph of a transverse section through a root of a Japanese sago palm, (Cycas revoluta)

Young yew tree stem, light micrograph
Young yew tree stem. Light micrograph of a transverse section through a one-year-old stem of a yew tree (Taxus baccata). The epidermis (outer layer)

Willow stem, light micrograph
Willow stem. Light micrograph of a cross-section through the stem of a willow (Salix sp.) tree. At centre is the pith (white), surrounded by woody xylem tissue (pink)

Section through stem of bamboo
Bamboo vascular system. Light micrograph of a section through a bamboo stem showing its vascular tissue. The black holes at centre are xylem tubes formed by dead tissue

Maple stem, light micrograph
Maple stem. Polarised light micrograph of a cross-section through the stem of a field maple (Acer campestre). This shows the thick layer of cork (phellem)

Abnormal thistle stem, light micrograph
Abnormal thistle stem. Light micrograph of a normal (top) and abnormal (bottom) stem of the perennial sow thistle (Sonchus arvensis). The abnormal stem has grown in a flattened, or fasciated, manner

Water-lily leaf stem, light micrograph
Water-lily leaf stem. Light micrograph of a cross- section through the leaf stem (petiole) of a white water-lily (Nymphaea alba)

Dutchmans pipe plant stem. Light micrograph of a section through the stem of a dutchmans pipe plant (Aristolochia sipho). The inner blue circle is a layer of sclerenchyma fibres

Stem section, SEM
Stem section. Coloured scanning electron micrograph (SEM) of a section through a stem of a woody dicotyledon plant. This stem consists mainly of secondary xylem tissue (orange, centre)

Grass stem, SEM
Grass stem. Coloured scanning electron micrograph (SEM) of a section through a grass stem (family Graminaceae). At upper centre is the vascular bundle

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Phloem, the intricate network of vascular bundles responsible for transporting nutrients and sugars throughout plants, is a fascinating subject to explore. Through scanning electron microscopy (SEM) and light micrographs, we can delve into the hidden world in various plant species. In a lime tree stem, a light micrograph reveals the delicate structure cells intertwined within the vascular bundle. These specialized cells form sieve tubes that efficiently transport organic compounds from leaves to other parts of the plant. Similarly, in a maize root captured under a light microscope, we witness the intricate web-like arrangement tissue. This vital system ensures essential nutrients are distributed from roots to shoots for growth and development. The water lily leaf showcases another mesmerizing view through a light micrograph. Here, we observe elongated phloem fibers running parallel to each other like veins on this aquatic beauty's surface. Switching gears to SEM imaging, we encounter an enchanting sight on a silver birch twig. The high-resolution image captures xylem vessels alongside phloem cells with astonishing detail—each playing its crucial role in maintaining fluid balance and nutrient transport within this majestic tree. A closer look at water fern rhizome under a light microscope uncovers an interconnected network tissues supporting its underground growth. These structures ensure efficient distribution of resources necessary for survival in challenging environments. Examining pine tree stems through light microscopy allows us to appreciate how intricately woven strands contribute to their robustness and longevity—a testament to nature's engineering marvels. Delving into tomato leaf anatomy via light micrographs reveals densely packed clusters of sieve tube elements forming part of its extensive phloem network—an integral component enabling fruit production and overall plant health. Pondweed stems provide yet another captivating glimpse into the world beneath our feet when observed using advanced microscopic techniques. Phloem fibers intertwine with xylem vessels, showcasing the plant's ability to adapt and thrive in aquatic environments.