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"Ornamental plants, cultivated chiefly for their handsome flowers. The Abelias are small or medium-sized bushy shrubs with deciduous or persistent foliage and rather small in numerous flowers varying from white to pink or purple; after the flowers have fallen, the persistent usually purplish sepals are attractive. A. grandiflora, Rehd. Fig. 58. Lvs. ovate, rounded or attenuate at the base, acute, 3/4-1&1/2 in. long, serrate, shining above, nearly glabrous, half-evergreen: fls. in terminal, loose panicles, white flushed pink, campanulate, 3/4in. long; stamens not exserted. Of garden origin. Gt. 41:1366. Gn. 76, p.528. J.H. III. 8:77- One of hte hardiest and most free-flowering abelias; it flowers continuously from June to November." L.H. Bailey, 1917

Glossy Abelia

"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. diaecious, apetalous. G. c. III. 18:737. R. H. 1904:256. -The kei apple of the Cape of Good Hope; a spiny plant grown S. for hedges; is considered promising for S. Calif. and S. Fla. as a fr. plant. Fruit acid, used as pickles or conserves. Proves quite hardy in S. Calif." L.H. Bailey, 1917

Aberia Caffra

"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), A. Magnifica (red Fir)." L. H> Bailey, 1917

Cones of Abies

"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.

Abronia

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 of many carpels, whose upper extremities are free and radiant." -Lindley, 1853

Abutilon

"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

Acanthus

"Nelsonia campestris. 1. flowers; 2. pistil; 3. capsule; 4. cross section of a seed." -Lindley, 1853

A type of fruit.

Achene

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 cross section of a seed." -Lindley, 1853

Achiote

"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, 1853

Acicarpha

"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.

Winter Aconite

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.

Acorn

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 minute caulicle.

Acorn

Half of an acorn, cut lengthwise, filled by the very thick cotyledons, the base of which encloses the…

An acorn from a dicotyledon.

Acorn

An acorn from a dicotyledon.

Nut (acorn) of the Oak, with its cup or cupule.

Acorn

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.

Germinating Acorn

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).

Bear Oak Acorn

This shows the acorn of Bear Oak, Quercus ilicifolia, (Keeler, 1915).

This shows the acorn of Black Jack Oak, Quercus marilandica, (Keeler, 1915).

Black Jack Oak Acorn

This shows the acorn of Black Jack Oak, Quercus marilandica, (Keeler, 1915).

This shows the acorn of Bur Oak, Quercus macrocarpa, (Keeler, 1915).

Bur Oak Acorn

This shows the acorn of Bur Oak, Quercus macrocarpa, (Keeler, 1915).

This shows the acorn of chestnut Oak, Quercus prinus, (Keeler, 1915).

Chestnut Oak Acorn

This shows the acorn of chestnut Oak, Quercus prinus, (Keeler, 1915).

This shows the acorn of Chinquapin Oak, Quercus prinoides, (Keeler, 1915).

Chinquapin Oak Acorn

This shows the acorn of Chinquapin Oak, Quercus prinoides, (Keeler, 1915).

A cross-section of an acorn.

Cross-section of an acorn

A cross-section of an acorn.

A longitudinal section of an acorn, showing two cotyledons and the embryo.

Longitudinal 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).

Pin Oak Acorn

This shows the acorn of Pin Oak, Quercus palustris, (Keeler, 1915).

This shows the acorn of Post Oak, Quercus minor, (Keeler, 1915).

Post Oak Acorn

This shows the acorn of Post Oak, Quercus minor, (Keeler, 1915).

This shows the acorn of Red Oak, Quercus rubra, (Keeler, 1915).

Red Oak Acorn

This shows the acorn of Red Oak, Quercus rubra, (Keeler, 1915).

This shows the acorn of Scarlet Oak, Quercus coccinea, (Keeler, 1915).

Scarlet Oak Acorn

This shows the acorn of Scarlet Oak, Quercus coccinea, (Keeler, 1915).

This shows the acorn of Shingle Oak, Quercus imbricaria, (Keeler, 1915).

Shingle Oak Acorn

This shows the acorn of Shingle Oak, Quercus imbricaria, (Keeler, 1915).

This shows acorns of Spanish Oak, Quercus digitata, (Keeler, 1915).

Spanish Oak Acorn

This shows acorns of Spanish Oak, Quercus digitata, (Keeler, 1915).

This shows the acorn of Swamp White Oak, Quercus platanoides, (Keeler, 1915).

Swamp Oak Acorn

This shows the acorn of Swamp White Oak, Quercus platanoides, (Keeler, 1915).

This shows the acorn of Willow Oak, Quercus phellos, (Keeler, 1915).

Willow Oak Acorn

This shows the acorn of Willow Oak, Quercus phellos, (Keeler, 1915).

This shows the acorn of Yellow Oak, Quercus acuminata, (Keeler, 1915).

Yellow Oak Acorn

This shows the acorn of Yellow Oak, Quercus acuminata, (Keeler, 1915).

"Adder's tongue fern (Ophioglossum vulgatum L.). R, runner or stolon." -Gager, 1916

Southern Adderstongue

"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.

Southern Adderstongue

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.

Agaric Hymenium

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.

Agaricus cepaestipes

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.

Twin-Flowered Agave

Littaea geminiflora, or the Twin-Flowered Agave, showing the flower and the whole plant.

Akene of Anemone, enlarged,(Gray, 1858).

Anemone Akene

Akene of Anemone, enlarged,(Gray, 1858).

Akene of Anemone, enlarged, cut in half to show the seed in it, (Gray, 1858).

Anemone Akene

Akene of Anemone, enlarged, cut in half to show the seed in it, (Gray, 1858).

Akene of Clematis and feathery tail, (Gray, 1858).

Clematis Akene

Akene of Clematis and feathery tail, (Gray, 1858).

Marlea begonifolia or Alangium chinense is an evergreen tree native in China used for its medicinal purposes.

Alangium

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 answer to an individual plant.

Alga

Magnified view of some of a simple fresh water Alga, the Tetraspora lubrica, each sphere of which may…

Flowering branch of the Carolina Allspice.

Carolina Allspice

Flowering branch of the Carolina Allspice.

Half of a calyx-cup, of the Carolina Allspice.

Carolina Allspice

Half of a calyx-cup, of the Carolina Allspice.

A ripe fruit of hip of the Carolina Allspice.

Carolina Allspice

A ripe fruit of hip of the Carolina Allspice.

This shows the leaf of the Almondleaf Willow, Salix amygdaloides, (Keeler, 1915).

Almondleaf Willow Leaf

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.

Aloe

The aloe plant is native to Africa and used for its healing properties.

Alternate leaves, in Linden, Lime-tree, or Basswood.

Alternate Leaves

Alternate leaves, in Linden, Lime-tree, or Basswood.

Utricle (pyxis) of Amaranth, opening all around (circumscissile).

Amaranth

Utricle (pyxis) of Amaranth, opening all around (circumscissile).

One of five stamen-clusters of the flower of American Linden, with accompanying scale.

American Linden

One of five stamen-clusters of the flower of American Linden, with accompanying scale.

Diagram of analogous scorpioid cyme, with alternate leaves or bracts.

Analogous Scorpioid Cyme

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. spore-case after the discharge of the spores; 5. columella with a few spores adhering." -Lindley, 1853

Andrea nivalis

"Andrea nivalis, natural size; 2. the same much magnified; 3. spore-case with the torn calyptra; 4.…

The moss, Andraea rupestris much magnified.

Andreaea Moss

The moss, Andraea rupestris much magnified.

A type of flower.

Anemone

A type of flower.

Section of the ovary of Anemone, showing its suspended ovule.

Ovary of Anemone

Section of the ovary of Anemone, showing its suspended ovule.

The flower of a species of Angelica, a flowering plant in the Apiaceae family.

Angelica

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.

Garden Angelica

The flowers of Archangelica officinalis, or the Garden Angelica, a flowering plant in the Apiaceae family.

The fungus, Angioridium sinuosum.

Angioridium sinuosum

The fungus, Angioridium sinuosum.

"Anona furfuracea. 1. an expanded flower; 2. a vertical section of male and female apparatus, which latter occupies the centre; 3. a vertical section of a carpel; 4. ditto of a ripe seed, showing the ruminated albumen and embryo." -Lindley, 1853

Annona

"Anona furfuracea. 1. an expanded flower; 2. a vertical section of male and female apparatus, which…

Anther of a prunella plant.

Prunella anther

Anther of a prunella plant.

An illustration of the anteridium of a bracken. An antheridium (plural: antheridia) is a haploid structure or organ producing and containing male gametes (called antherozoids or sperm). Brackens (Pteridium) are a genus of about ten species of large, coarse ferns, in the family Dennstaedtiaceae. The genus has probably the widest distribution of any fern genus in the world, being found on all continents except Antarctica and in all environments except for hot and cold deserts. Therefore it is considered to have a cosmopolitan distribution.

Antheridium of Bracken

An illustration of the anteridium of a bracken. An antheridium (plural: antheridia) is a haploid structure…