Cellular Botany | ClipArt ETC

The Cellular Botany ClipArt gallery offers 293 illustrations of plant tissue at the cellular level, illustrations of cell division, and examples of individual pollen grains.

"Different forms of epidermal outgrowths. 1, hooked hair from Phaseolus multiflorus; 2, climbing hair from stem of Humulus Lupulus; 3, rod-like wax coating from the stem of Saccharum offininarum; 4, climbing hair of Lossa hispida; 5, stinging hair of Urtica urens." -Stevens, 1916

Epidermal Outgrowths

"Different forms of epidermal outgrowths. 1, hooked hair from Phaseolus multiflorus; 2, climbing hair…

This illustration shows a stem of a plant. e; epidermis; s, stoma; p, palisade mesophyll; ch, chloroplast; sp, spongy mesophyll; i, intercellular spaces; v, small vein cut across; l, end of vein seen from the side, sonsisting of elongated and banded cells.

Epidermis

This illustration shows a stem of a plant. e; epidermis; s, stoma; p, palisade mesophyll; ch, chloroplast;…

"Vertical section of epidermis, from the lower surface of the leaf of Madder, showing the intimate union of the spidermal cells e, the loose subjacent parenchyma p, with intercellular canals m, and lacuna l; s, stoma." — Encyclopedia Britanica, 1893

Epidermis

"Vertical section of epidermis, from the lower surface of the leaf of Madder, showing the intimate union…

Apple Epidermis

"B, cross section through skin of apple." -Stevens, 1916

"A, portion of cross section of leaf of Avicennia growing in salty soil; outer wall of epidermis very thick." -Stevens, 1916

Avicennia Epidermis

"A, portion of cross section of leaf of Avicennia growing in salty soil; outer wall of epidermis very…

"Cross section of a portion of leaf of Ficus elastica showing the multiple epidermis from e to a inclusive; c, cystolith; b, palisade parenchyma; d, spongy parenchyma." -Stevens, 1916

F. Elastica Epidermis

"Cross section of a portion of leaf of Ficus elastica showing the multiple epidermis from e to a inclusive;…

"D, upper, and E, lower epidermis of leaf of Hibiscus moscheutos." -Stevens, 1916

H. Moscheutos Epidermis

"D, upper, and E, lower epidermis of leaf of Hibiscus moscheutos." -Stevens, 1916

Japan Quince Epidermis

"C, cross section through upper half of petal of Japan Quince." -Stevens, 1916

"Multiple epidermis of leaf of mangrove in cross section. This serves as a water reservoir, and the relatively thick walls of the inner cells reenforce the protective power of the outer layer." -Stevens, 1916

Multiple Epidermis

"Multiple epidermis of leaf of mangrove in cross section. This serves as a water reservoir, and the…

N. Odorata Epidermis

"C, portion of cross section of submerged stem of Nymphaea odorata, where there is no cutinized layer,…

"A, cross section through upper half of leaf of Pyrus Japonica, showing cutinized layer of the outer wall at f, and cellulose layer at g." -Stevens, 1916

P. Japonica Epidermis

"A, cross section through upper half of leaf of Pyrus Japonica, showing cutinized layer of the outer…

"Two epidermal cells in cross section showing thickened outer wall differentiated into three layers, namely, an outer cuticle, cutinized layer (shaded), and an inner cellulose layer." -Stevens, 1916

Plant Epidermis

"Two epidermal cells in cross section showing thickened outer wall differentiated into three layers,…

Plant Epidermis

"Epidermal outgrowths in the form of scales and hairs." -Stevens, 1916

"Epidermal outgrowths in the form of scales and hairs." -Stevens, 1916

Plant Epidermis

"Epidermal outgrowths in the form of scales and hairs." -Stevens, 1916

The epidermis of an iris leaf.

Plant Epidermis

The epidermis of an iris leaf.

"Group of cells from petal of Viola tricolor." -Stevens, 1916

Plant Epidermis

"Group of cells from petal of Viola tricolor." -Stevens, 1916

The epidermis of an oak leaf.

Plant Epidermis

The epidermis of an oak leaf.

A cross section through the upper half of a Russian olive leaf, showing a "cutinized layer of the outer wall at f, and cellulose layer at g." -Stevens, 1916

Russian Olive Leaf Epidermis

A cross section through the upper half of a Russian olive leaf, showing a "cutinized layer of the outer…

"Longitudinal section of an open fibro-vascular bundle. c, cambium; s, spiral vessels with fibers which can be unrolled; l, scalariorm reticulated vessel; h, h', h'', h''', wood-cells; t, bordered pitted vessel; t', young pitted vessel; p, inner phloem layer; b, best layer; gs, bundle-sheath; r, cortical parenchyms; m, pith parenchyms. The elements are developed from s to t' in the xylem portion." — Encyclopedia Britanica, 1893

Fibro-vascular Bundle

"Longitudinal section of an open fibro-vascular bundle. c, cambium; s, spiral vessels with fibers which…

"Transverse section of a closed fibro-vascular bundle. r, annular vessel; s, spiral vessel; I, inter-cellular canal; g, pitted vessel; v, cambiform tissue which has become permanent. Between v and s are reticulated vessels. p, surrounding parenchyms. Outer cells a of the bundle are parenchymatous, i marks the inner side of the bundle." — Encyclopedia Britanica, 1893

Fibro-vascular Bundle

"Transverse section of a closed fibro-vascular bundle. r, annular vessel; s, spiral vessel; I, inter-cellular…

Magnified section through the thickness of a leaf of Florida Star-Anise.

Florida Star-Anise

Magnified section through the thickness of a leaf of Florida Star-Anise.

Section through the thickness of a leaf of Florida Star-Anise.

Florida Star-Anise

Section through the thickness of a leaf of Florida Star-Anise.

"Diagram illustrating the descent of food from the leaf into the stem, and its circulation upward and downward through the sieve tubes, and upward through the tracheal tissues." -Stevens, 1916

Leaf Food Circulation

"Diagram illustrating the descent of food from the leaf into the stem, and its circulation upward and…

"The digestion of the stored food and its ascent through the tracheal tubes when growth is resumed in the spring." -Stevens, 1916

Plant Food Digestion

"The digestion of the stored food and its ascent through the tracheal tubes when growth is resumed in…

"Diagram to show food from the leaves descending through the sieve tubes and being stored in the medullary ray cells and xylem parenchyma." -Stevens, 1916

Plant Food Storage

"Diagram to show food from the leaves descending through the sieve tubes and being stored in the medullary…

Food Tissues

"Diagram to show the relation of the food-conducting tissues of the leaf to those of the stem; and in…

Sieve Tube Food Transportation

"Diagram showing the transport of food through the sieve tubes, medullary rays and tracheal tubes, and…

Fucus is the generic name of various species of brown seaweed which form the main vegetation of rocky shores between tide marks. Most common of all is F. vesiculosus (Rockweed, Bladderweed, sea wave, etc.), easily distinguished by its entire edges and paired air vesicles. On account of the large proportion of ash it forms a valuable manure. Besides manure, the only direct chemical utilization of of the Fuci is for the preparation of Iodine. The vegetative body of Fucus is usually a thallus; the branching is dichotomous in one plane. Of the inner, or medullary, cells of the thallus, the outer wall becomes mucilaginous, while the less superficial of the rind cells develop filaments which grow inward, thus surrounding the inner cells within a network of filaments. The ladders are formed by the simple separation of portions of the tissue, the cavities becoming distended by air. Fertilization takes place when the ripe, fertile fronds are left bare by the tide. The fertilized ovum soon develops a wall, becomes attached, and proceeds to divide and lengthen, forming a root-like attachment at one end, a growing point at the other. This illustration shows a Fucus, 1) a cross-section of a fertile frond, 2) a female conceptacle, 3) a male conceptacle, and 4) Zoospores and Antheridia.

Fucus

Fucus is the generic name of various species of brown seaweed which form the main vegetation of rocky…

"Eurotium repens. A, a small portion of the mycelium with a conidiophore (c), terminated by the sterigmata (st), from which the spores have fallen, also with the spiral female organ, the ascogonium (as). B the spiral ascogonium (as) with antheridium (p). C, the same beginning to be surrounded by threads, out of which the wall of the perithecium is formed. D, a perithecium. E, F, sections of young perithecia: w, cells composing the wall; f, false parenchyma underneath the wall; as ascogonium. G, ascus. H, an ascopore." -Whitney, 1911

Eurotium Fungus

"Eurotium repens. A, a small portion of the mycelium with a conidiophore (c), terminated by the sterigmata…

Rusts are fungi in the Uredinales order that are plant parasites and resemble rust."Ravenelia. a, stem of Cassia nictitans with teleutospores on the stem and uredospores on the leaves; b, stem and teleutospores enlarged; c, section showing the teleutospores."

Rust Fungus

Rusts are fungi in the Uredinales order that are plant parasites and resemble rust. "Ravenelia. a, stem…

"The Scab-fungus (Venturia inaequalis). a, an infested apple, showing scabs caused by the fungus; b, portion of an infested leaf, showing the fungus in black patches; c, section of a diseased spot in the fruit, showing the spores of the fungus in position." -Whitney, 1911

Scab Fungus

"The Scab-fungus (Venturia inaequalis). a, an infested apple, showing scabs caused by the fungus; b,…

"Funicle. In botany, The stalk of an ovule or seed. Pod of Lunaria. a, a, a, funicles." -Whitney, 1911

Funicle of Lunaria Pod

"Funicle. In botany, The stalk of an ovule or seed. Pod of Lunaria. a, a, a, funicles." -Whitney, 1911

Small portion of epidermis of the Garden Balsam, showing very sinuous-walled cells, and three stomata.

Garden Balsam

Small portion of epidermis of the Garden Balsam, showing very sinuous-walled cells, and three stomata.

Gland(g) from the upper surface of the leaf of lilac: e, epidermis, c, cuticle, p, palisade cells.

Gland

Gland(g) from the upper surface of the leaf of lilac: e, epidermis, c, cuticle, p, palisade cells.

"Formation of an interior, globular, lysigenous gland of the leaf of Dictamnus fraxinella. A, g, g and c, mother cells of the gland; c, from the protoderm, and g, g, from the fundamental tissue. B, older stage where the cells have begun to form the secretion." -Stevens, 1916

D. Fraxinella Gland Formation

"Formation of an interior, globular, lysigenous gland of the leaf of Dictamnus fraxinella. A, g, g and…

"Lysigenous gland in the leaf of Dictamnus fraxinella. B, young gland, with cells beginning to secrete oil; C, mature gland where the secreting cells have broken down and left their secretion within the cavity thus formed; o, large drop of secreted oil." -Stevens, 1916

Leaf Gland

"Lysigenous gland in the leaf of Dictamnus fraxinella. B, young gland, with cells beginning to secrete…

Nectar gland in the ovary of day lily.

Nectar Gland

Nectar gland in the ovary of day lily.

Leaf Glands

"Glands from Pinguicula. A, upper surface of leaf showing long-stalked gland at m, and short-stalked…

"Glands from the leaf of Ribes nigrum. A, young stage in the development of the gland where the cuticle is already being pushed up by the secretion, i. B, complete gland; k, secreting cells; h, cavity between the secreting cells and cuticle occupied by the secretion." -Stevens, 1916

Leaf Glands

"Glands from the leaf of Ribes nigrum. A, young stage in the development of the gland where the cuticle…

"Cross section through a portion of orange peel showing the cavity of an interior, globular gland at g; crystals of hesperidin at h; calcium oxalate crystals at k." -Stevens, 1916

Orange Peel Glands

"Cross section through a portion of orange peel showing the cavity of an interior, globular gland at…

Glomerate crystal in a cell, from Beet-root.

Glomerate crystal

Glomerate crystal in a cell, from Beet-root.

This illustration shows the longitudinal section of the tip of a growing stem: e, epidermis extending over surface of the entire tip; a, formative region; b, upper portion of the zone of elongation; c, cortex; x, cells of the central region that by further growth form the vascular bundles; l, first appearance of the leaves.

Growing Stem

This illustration shows the longitudinal section of the tip of a growing stem: e, epidermis extending…

Guard Cell Experiment

"Diagram of apparatus showing how the guard cells draw apart; j, j, position of the rubber tubing when…

"In the lower plants the numerous asexual spores which each individual produces are usually alike. Among the ptidophytes, however, certain forms produce asexual spores which differ very much in size." — Beach, 1909

Heterospory

"In the lower plants the numerous asexual spores which each individual produces are usually alike. Among…

Magnified pollen of Hibiscus and other Mallow plants, beset with prickly projections.

Hibiscus pollen

Magnified pollen of Hibiscus and other Mallow plants, beset with prickly projections.

"Formation of stomata from leaf of Hyacinth, seen from the surface. e, epidermis cells; s', mother-cell of stomatic guard-cells; s, bipartition of mother-cell into two guard-cells." — Encyclopedia Britanica, 1893

Hyacinth

"Formation of stomata from leaf of Hyacinth, seen from the surface. e, epidermis cells; s', mother-cell…

"Diagram showing possible combination of two contrasting characters during self-fertilization of a hybrid. A, row of sperm cells, B, row of egg cells, C, row of fertilized egg cells." -Stevens, 1916

Hybrid Self-Fertilization

"Diagram showing possible combination of two contrasting characters during self-fertilization of a hybrid.…

"Diagram to show results of hybridization, with reference to dominant and recessive characters to the F3 generation." -Stevens, 1916

Hybridization

"Diagram to show results of hybridization, with reference to dominant and recessive characters to the…

"One-celled hydatode of Gonocaryum pyriforme, seen in cross section at A, and from the surface in B." -Stevens, 1916

G. Pyriforme Hydatode

"One-celled hydatode of Gonocaryum pyriforme, seen in cross section at A, and from the surface in B."…

"Hydatode from the leaf of Phaseolus multiflorus." -Stevens, 1916

P. Multiflorus Hydatode

"Hydatode from the leaf of Phaseolus multiflorus." -Stevens, 1916

"Radial longitudinal section through a hydatode from the leaf margin of Primula sinensis. i, upper, and j, lower epidermis; h, palisade cell; e, thin-walled parenchyma, called epithem; g, intercellular space; f, guard cell of a water stoma; k, tracheal elements." -Stevens, 1916

P. Sinensus Hydatode

"Radial longitudinal section through a hydatode from the leaf margin of Primula sinensis. i, upper,…

Some cells of the albumen or floury part of Indian Corn, filled with starch-grains.

Indian Corn

Some cells of the albumen or floury part of Indian Corn, filled with starch-grains.

"Diagram suggestive of the distribution of intercellular spaces throughout a plant. The heavy horizontal lines in stem and root indicate intercellular spaces in medullary rays. The arrows indicate the entrance of gasses through the stomata of the leaves and stomata and lenticels of the roots and everywhere over the younger roots where waterproofing is slight." -Stevens, 1916

Intercellular Spaces of a Plant

"Diagram suggestive of the distribution of intercellular spaces throughout a plant. The heavy horizontal…

"Showing intercellular spaces: f, between the palisade cells; e, in a leaf; g, border parenchyma; h, tracheal elements of the vein." -Stevens, 1916

Intercellular Spaces of Leaf

"Showing intercellular spaces: f, between the palisade cells; e, in a leaf; g, border parenchyma; h,…

"Knight's experiment, substituting centrifugal "force" for gravity" proved that stems do not grow upwards because of sunlight but rather, roots grow downwards because of gravity. -Gager, 1916

Knight's Experiment

"Knight's experiment, substituting centrifugal "force" for gravity" proved that stems do not grow upwards…

"B, cells from the petal of Lupinus luteus with yellow chromoplasts." -Stevens, 1916

L. Luteus Cell

"B, cells from the petal of Lupinus luteus with yellow chromoplasts." -Stevens, 1916

"Diagram to show the architecture of a typical leaf in the region of one of the lateral veins. The shaded parts amongst the palisade and spongy parenchyma represent intercellular spaces." -Stevens, 1916

Leaf Architecture

"Diagram to show the architecture of a typical leaf in the region of one of the lateral veins. The shaded…

"Cross section of a portion of a leaf of Indian corn. a, upper and b, lower epidermis; c, c, palisade cells; n, border parenchyma containing starch within its chloroplasts; e, vascular bundle; d, d, stomata." -Stevens, 1916

Indian Corn Leaf Cells

"Cross section of a portion of a leaf of Indian corn. a, upper and b, lower epidermis; c, c, palisade…

"Cross section through a portion of rubber leaf, showing the large percentage of water-storage tissues on both sides of the leaf, and the relation of the palisade and spongy parenchyma to the lateral veins." -Stevens, 1916

Rubber Leaf Cells

"Cross section through a portion of rubber leaf, showing the large percentage of water-storage tissues…

"Cross section of a portion of the blade of a leaf, showing upper epidermis at a, lower epidermis at b, palisade parenchyma at c, spongy parenchyma at d, and tracheids from the end of a vein at e." -Stevens, 1916

Leaf Epidermis

"Cross section of a portion of the blade of a leaf, showing upper epidermis at a, lower epidermis at…