"Ornamental plants, cultivated chiefly for their handsome flowers. The Abelias are small or medium-sized…
"Aberia Caffra, Hook. f. & Harv. Fig. 59. Thorny, glabrous: lvs. obovate, obtuse, cuneate at base, entire:fls.…
"Fig. 61- Cones of Abies- From bottom to top, A. concolor (White Fir), A. Nordmanniana (Nordmann Fir),…
Embryo of Abronia umbellata; one of the cotyledons very small.
"Abutilon macropodum. 1. an unexpanded flower; 2. the stamens and styles; 3. a ripe fruit, consisting…
"Nelsonia campestris. 1. flowers; 2. pistil; 3. capsule; 4. cross section of a seed." -Lindley, 1853
A type of fruit.
"Bixa orellana. 1. a pistil and two stamens; 2. a cross section of the ovary; 3. a ripe fruit. 4. a…
"Acicarpha spathulata. 1. section of an entire flower; 2. perpendicular section of ripe fruit." -Lindley,…
The Winter Aconite (Eranthis hyemalis) is a European plant in the Ranunculaceae family of buttercups.
In this acorn the nut is surrounded by a scaly cup.
Half of an acorn, cut lengthwise, filled by the very thick cotyledons, the base of which encloses the…
An acorn from a dicotyledon.
Nut (acorn) of the Oak, with its cup or cupule.
Here is a representation of the acorn which has germinated. The roots go down while the stalk goes up.
This shows the acorn of Bear Oak, Quercus ilicifolia, (Keeler, 1915).
This shows the acorn of Black Jack Oak, Quercus marilandica, (Keeler, 1915).
This shows the acorn of Bur Oak, Quercus macrocarpa, (Keeler, 1915).
This shows the acorn of chestnut Oak, Quercus prinus, (Keeler, 1915).
This shows the acorn of Chinquapin Oak, Quercus prinoides, (Keeler, 1915).
A cross-section of an acorn.
A longitudinal section of an acorn, showing two cotyledons and the embryo.
This shows the acorn of Pin Oak, Quercus palustris, (Keeler, 1915).
This shows the acorn of Post Oak, Quercus minor, (Keeler, 1915).
This shows the acorn of Red Oak, Quercus rubra, (Keeler, 1915).
This shows the acorn of Scarlet Oak, Quercus coccinea, (Keeler, 1915).
This shows the acorn of Shingle Oak, Quercus imbricaria, (Keeler, 1915).
This shows acorns of Spanish Oak, Quercus digitata, (Keeler, 1915).
This shows the acorn of Swamp White Oak, Quercus platanoides, (Keeler, 1915).
This shows the acorn of Willow Oak, Quercus phellos, (Keeler, 1915).
This shows the acorn of Yellow Oak, Quercus acuminata, (Keeler, 1915).
"Adder's tongue fern (Ophioglossum vulgatum L.). R, runner or stolon." -Gager, 1916
Ophioglossum vulgatum, or Southern Adderstongue is a fern-like plant commonly growing in sand dunes.
The hymenium or tissue layer of the agaric of a mushroom.
Agaricus cepaestipes is a mushroom from a large genus with both edible and poisonous species.
Littaea geminiflora, or the Twin-Flowered Agave, showing the flower and the whole plant.
Akene of Anemone, enlarged,(Gray, 1858).
Akene of Anemone, enlarged, cut in half to show the seed in it, (Gray, 1858).
Akene of Clematis and feathery tail, (Gray, 1858).
Marlea begonifolia or Alangium chinense is an evergreen tree native in China used for its medicinal…
Magnified view of some of a simple fresh water Alga, the Tetraspora lubrica, each sphere of which may…
Flowering branch of the Carolina Allspice.
Half of a calyx-cup, of the Carolina Allspice.
A ripe fruit of hip of the Carolina Allspice.
This shows the leaf of the Almondleaf Willow, Salix amygdaloides, (Keeler, 1915).
The aloe plant is native to Africa and used for its healing properties.
Alternate leaves, in Linden, Lime-tree, or Basswood.
Utricle (pyxis) of Amaranth, opening all around (circumscissile).
One of five stamen-clusters of the flower of American Linden, with accompanying scale.
Diagram of analogous scorpioid cyme, with alternate leaves or bracts.
"Andrea nivalis, natural size; 2. the same much magnified; 3. spore-case with the torn calyptra; 4.…
The moss, Andraea rupestris much magnified.
A type of flower.
Section of the ovary of Anemone, showing its suspended ovule.
The flower of a species of Angelica, a flowering plant in the Apiaceae family.
The flowers of Archangelica officinalis, or the Garden Angelica, a flowering plant in the Apiaceae family.
The fungus, Angioridium sinuosum.
"Anona furfuracea. 1. an expanded flower; 2. a vertical section of male and female apparatus, which…
Anther of a prunella plant.
An illustration of the anteridium of a bracken. An antheridium (plural: antheridia) is a haploid structure…