ClipArt ETC
"A, depressed stoma of the under side of a leaf of Amherstia nobilis." -Stevens, 1916

Depressed Stoma

"A, depressed stoma of the under side of a leaf of Amherstia nobilis." -Stevens, 1916

"B, depressed stoma of Hakea suaveolens. g stands beneath the guard cells; d, outer, and e inner, cavities." -Stevens, 1916

Depressed Stoma

"B, depressed stoma of Hakea suaveolens. g stands beneath the guard cells; d, outer, and e inner, cavities."…

"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…

"Starch grains from the palisade cells of a Euphorbia leaf." -Stevens, 1916

Euphorbia Palisade Cells

"Starch grains from the palisade cells of a Euphorbia leaf." -Stevens, 1916

"Diagram to show the three general tissue regions of a leaf." -Stevens, 1916

Leaf Tissues

"Diagram to show the three general tissue regions of a leaf." -Stevens, 1916

"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,…

"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 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 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 of a portion of leaf of Codonanthe, showing the water-storage tissue at f, and the chlorophyll-bearing tissues at e." -Stevens, 1916

Codonanthe Leaf Tissues

"Cross section of a portion of leaf of Codonanthe, showing the water-storage tissue at f, and the chlorophyll-bearing…

"Portion of leaf of Sphagnum, in cross section on the left, and surface view on the right. h, hole through the wall; i, chlorophyll-bearing cells; j, water-storage and water-conducting cells, with annular thickenings at k." -Stevens, 1916

Sphagnum Leaf

"Portion of leaf of Sphagnum, in cross section on the left, and surface view on the right. h, hole through…

"Cross section through a portion of leaf of Polytrichum commune. b, chains of chlorophyll-bearing cells; d, bast fibers." -Stevens, 1916

P. Commune Leaf

"Cross section through a portion of leaf of Polytrichum commune. b, chains of chlorophyll-bearing cells;…

"Cross section, A, and surface view, B, of a leaf of common moss, showing chloroplasts, c." -Stevens, 1916

Moss Leaf Chloroplasts

"Cross section, A, and surface view, B, of a leaf of common moss, showing chloroplasts, c." -Stevens,…

"Showing the effect of cutting across the veins on the removal of food from the leaf. A, all of the main veins are cut across near their bases; B, the mid-vein alone has been severed. The stippled areas indicated the starch reaction with the iodine test." -Stevens, 1916

Cut Leaf Veins

"Showing the effect of cutting across the veins on the removal of food from the leaf. A, all of the…

"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…

"Diagram to show the relation of the food-conducting tissues of the leaf to those of the stem; and in the stem the relation of these tissues of one year to those of preceding years. The dotted line between phloem and xylem stands for the cambium. The figures at the bottom of the diagram indicate the age in years of the zones of tissues in phloem and xylem." -Stevens, 1916

Food Tissues

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

"Cross section of leaf of Mesembryanthemum Forskalii showing a large part of the leaf devoted to the storage of water. a, water-storage cells; b, chlorophyll-bearing cells; c, crystal of calcium oxalate." -Stevens, 1916

M. Forskalli Leaf

"Cross section of leaf of Mesembryanthemum Forskalii showing a large part of the leaf devoted to the…

"Water-storage tracheids in the leaf of Euphorbia splendens. b, b, water-storage tracheids; d, mesophyll cells; c, branch from a milk tube." -Stevens, 1916

E. Splendens Leaf

"Water-storage tracheids in the leaf of Euphorbia splendens. b, b, water-storage tracheids; d, mesophyll…

"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…

"Resin duct in leaf of Pinus silvestris, in cross section at A, and in longitudinal section at B; h, cavity surrounded by the secreting cells; f, f, sclerenchyma fibers surrounding and protecting the duct." -Stevens, 1916

Leaf Resin Duct

"Resin duct in leaf of Pinus silvestris, in cross section at A, and in longitudinal section at B; h,…

"Glands from Pinguicula. A, upper surface of leaf showing long-stalked gland at m, and short-stalked gland at n. B, cross section through a short-stalked gland." -Stevens, 1916

Leaf Glands

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

"Cystoliths from the leaf of Ficus carica. A, complete cystolith; B, cystolith from which the calcium carbonate has been removed for use in other parts of the plant. B is from a leaf that had fallen off in autumn." -Stevens, 1916

Cystoliths

"Cystoliths from the leaf of Ficus carica. A, complete cystolith; B, cystolith from which the calcium…

"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…

"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,…

The Leaf-cutter bee, Megachile latimana.

M. Latimana

The Leaf-cutter bee, Megachile latimana.

Of the buckwheat family (Polygonaceae), the golden dock or Rumex persicarioides. The smaller image is the leaf of the swamp dock or Rumex verticillatus.

Golden Dock

Of the buckwheat family (Polygonaceae), the golden dock or Rumex persicarioides. The smaller image is…

Of the buckwheat family (Polygonaceae), the bitter dock or Rumex obtusifolius. The smaller image is the leaf of the great water dock or Rumex Britannica.

Bitter Dock

Of the buckwheat family (Polygonaceae), the bitter dock or Rumex obtusifolius. The smaller image is…

Of the buckwheat family (Polygonaceae), the Buckwheat or Fagopyrum esculentum.

Buckwheat

Of the buckwheat family (Polygonaceae), the Buckwheat or Fagopyrum esculentum.

Of the buckwheat family (Polygonaceae): left, arrow-leaved tearthumb (Polygonum sagittatum); right, Halberd-leaved tearthumb (Polygonum arifolium).

Arrow-Leaved and Halberd-Leaved Tearthumbs

Of the buckwheat family (Polygonaceae): left, arrow-leaved tearthumb (Polygonum sagittatum); right,…

Of the goosefoot family (Chenopodiaceae), the pigweed or lamb's-quarters (Chenopodium album).

Pigweed

Of the goosefoot family (Chenopodiaceae), the pigweed or lamb's-quarters (Chenopodium album).

Of the crowfoot family (Ranunculaceae), the swamp buttercup or Ranunculus septentrionalis. The smaller image is of the leaf of the early buttercup or Ranunculus fascicularis.

Swamp Buttercup

Of the crowfoot family (Ranunculaceae), the swamp buttercup or Ranunculus septentrionalis. The smaller…

Of the crowfoot family (Ranunculaceae), the leaf and flower (showing reflexed sepals) of the bulbous buttercup or Ranunculus bulbosus.

Bulbous Buttercup

Of the crowfoot family (Ranunculaceae), the leaf and flower (showing reflexed sepals) of the bulbous…

Of the mustard family (Cruciferae), the leaf of the cut-leaved toothwort or Dentaria laciniata.

Cut-Leaved Toothwort

Of the mustard family (Cruciferae), the leaf of the cut-leaved toothwort or Dentaria laciniata.

Of the mustard family (Cruciferae), the leaf of the watercress or Radicula Nasturtium-aquaticum.

Watercress

Of the mustard family (Cruciferae), the leaf of the watercress or Radicula Nasturtium-aquaticum.

Of the mustard family (Cruciferae), the leaf of the field mustard or Brassica arvensis.

Field Mustard Leaf

Of the mustard family (Cruciferae), the leaf of the field mustard or Brassica arvensis.

Of the saxifrage family (Saxifragaceae), the leaf of the alumroot or Heuchera americana.

Alumroot Leaf

Of the saxifrage family (Saxifragaceae), the leaf of the alumroot or Heuchera americana.

Of the rose family (Rosaceae), the leaf of rough-fruited cinquefoil or Potentilla recta.

Rough-Fruited Cinquefoil

Of the rose family (Rosaceae), the leaf of rough-fruited cinquefoil or Potentilla recta.

Of the rose family (Rosaceae), the leaf of the shrubby cinquefoil or Potentilla fructosa.

Shrubby Cinquefoil Leaf

Of the rose family (Rosaceae), the leaf of the shrubby cinquefoil or Potentilla fructosa.

Of the rose family (Rosaceae), the leaf of Potentilla tridentata.

P. Tridentata

Of the rose family (Rosaceae), the leaf of Potentilla tridentata.

Of the pulse family (Leguminosae), the rabbit-foot clover or Trifolium arvense.

Rabbit-Foot Clover

Of the pulse family (Leguminosae), the rabbit-foot clover or Trifolium arvense.

Of the pulse family (Leguminosae), the hop clover or Trifolium agrarium.

Hop Clover

Of the pulse family (Leguminosae), the hop clover or Trifolium agrarium.

Of the pulse family (Leguminosae), the alsike clover or Trifolium hybridum.

Alsike Clover

Of the pulse family (Leguminosae), the alsike clover or Trifolium hybridum.

Of the pulse family (Leguminosae), the leaf and seed pod of Desmodium paniculatum.

D. Paniculatum

Of the pulse family (Leguminosae), the leaf and seed pod of Desmodium paniculatum.

Of the pulse family (Leguminosae), the leaf and seed pod of Desmodium Dellenii.

D. Deillenii

Of the pulse family (Leguminosae), the leaf and seed pod of Desmodium Dellenii.

Of the pulse family (Leguminosae), the leaf of the nonesuch or black medick (Medicago lupulina).

Nonesuch or Black Medick

Of the pulse family (Leguminosae), the leaf of the nonesuch or black medick (Medicago lupulina).

Of the pulse family (Leguminosae), the leaf of the trailing bush clover or Lespedeza procumbens.

Trailing Bush Clover

Of the pulse family (Leguminosae), the leaf of the trailing bush clover or Lespedeza procumbens.

Of the pulse family (Leguminosae), the leaf of Lespedeza hirta.

L. Hirta

Of the pulse family (Leguminosae), the leaf of Lespedeza hirta.

Of the pulse family (Leguminosae), the leaf of Vicia americana.

V. Americana

Of the pulse family (Leguminosae), the leaf of Vicia americana.

Of the pulse family (Leguminosae), the leaf of the common vetch or Vicia sativa.

Common Vetch

Of the pulse family (Leguminosae), the leaf of the common vetch or Vicia sativa.

Of the pulse family (Leguminosae), the bush clover, Lespedeza violacea.

Bush Clover

Of the pulse family (Leguminosae), the bush clover, Lespedeza violacea.

Of the sorrel family (Oxalidaceae), Oxalis filipes.

O. Filipes

Of the sorrel family (Oxalidaceae), Oxalis filipes.

Of the sorrel family (Oxalidaceae), Oxalis grandis.

O. Grandis

Of the sorrel family (Oxalidaceae), Oxalis grandis.

Of the sorrel family (Oxalidaceae), Oxalis repens.

O. Repens

Of the sorrel family (Oxalidaceae), Oxalis repens.

Of the mallow family (Malvaceae), the leaf of the high mallow or Malva sylvestris.

High Mallow

Of the mallow family (Malvaceae), the leaf of the high mallow or Malva sylvestris.

Of the mallow family (Malvaceae), the leaf and flower of the marsh mallow or Althaea officinalis.

Marsh Mallow

Of the mallow family (Malvaceae), the leaf and flower of the marsh mallow or Althaea officinalis.

Of the mallow family (Malvaceae), the leaf of the halberd-leaved rose-mallow or Hibiscus militaris.

Halberd-Leaved Rose-Mallow

Of the mallow family (Malvaceae), the leaf of the halberd-leaved rose-mallow or Hibiscus militaris.

Of the mallow family (Malvaceae), the leaf of the bladder ketmia or Hibiscus Trionum.

Bladder Ketmia

Of the mallow family (Malvaceae), the leaf of the bladder ketmia or Hibiscus Trionum.

"Parapodium of "Heteronereis" of Nereis pelagica. 1, 2, 3, 4, the leaf-like outgrowths; c1., notopodial cirrus; c2., neuropodial cirrus; a1., a2., acicula or supporting bristles of notopodium and neuropodium; s., setae." -Thomson, 1916

N. Pelagica

"Parapodium of "Heteronereis" of Nereis pelagica. 1, 2, 3, 4, the leaf-like outgrowths; c1., notopodial…