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Vertical section of a Buckthorn flower.

Flower of a Buckthorn

Vertical section of a Buckthorn flower.

A Florida plant, the buckwheat tree: "Mylocaryum ligustrinum. 1. a flower; 2. stamens; 3. ovary; 4. section of seed." -Lindley, 1853

Buckwheat Tree

A Florida plant, the buckwheat tree: "Mylocaryum ligustrinum. 1. a flower; 2. stamens; 3. ovary; 4.…

Section of the ovary of Buckwheat, showing the erect ovule.

Ovary of Buckwheat

Section of the ovary of Buckwheat, showing the erect ovule.

A flower-bud of the Poppy,casting its calyx.

Bud

A flower-bud of the Poppy,casting its calyx.

Magnified cross-section of a flower-bud of the American Linden.

Bud

Magnified cross-section of a flower-bud of the American Linden.

A section of a rose bud.

Bud

A section of a rose bud.

"Blancoa canescens. 1. a flower and ovary of Conostyles aemula opened." -Lindley, 1853

Red Bugle

"Blancoa canescens. 1. a flower and ovary of Conostyles aemula opened." -Lindley, 1853

Bulb of Dicentra, in the herb family,(Gray, 1858).

Bulb

Bulb of Dicentra, in the herb family,(Gray, 1858).

From the bottom of the bulb, roots descend into soil to absorb moisture and other matter from it, while, above, it sends up leaves to digest and convert these matters into nourishment.

Lily Bulb

From the bottom of the bulb, roots descend into soil to absorb moisture and other matter from it, while,…

"a.-- Truncated bulb of onion; b.-- onion leaf dissected off; c.-- bulb of lily. Bulb, a modified leaf-bud, formed on a plant upon or beneath the surface of the ground, emitting roots from its base, and producing a stem from its center." -Vaughan, 1906

Various Bulbs

"a.-- Truncated bulb of onion; b.-- onion leaf dissected off; c.-- bulb of lily. Bulb, a modified leaf-bud,…

"Scirpus lacustris. 1. A flower surrounded with hypogynous bristles; 2. a seed; 3, a section of it, showing the lenticular embryo." -Lindley, 1853

Bulrush

"Scirpus lacustris. 1. A flower surrounded with hypogynous bristles; 2. a seed; 3, a section of it,…

"1. Flowering plant of Bulrush (Scirpus lacustris). 2. The inflorescence. a, a flower; b, the fruit." -Whitney, 1911

Bulrush

"1. Flowering plant of Bulrush (Scirpus lacustris). 2. The inflorescence. a, a flower; b, the fruit."…

"Typha latifolia; 2, its fruit; 3, a section of the seed; 4, the embryo; 5, a stamen." -Lindley, 1853

Common Bulrush

"Typha latifolia; 2, its fruit; 3, a section of the seed; 4, the embryo; 5, a stamen." -Lindley, 1853

"Sanguisorba officinalis. 1. a flower with a pair of bracts; 2. the same with half the calyx cut away; 3. a ripe fruit, from which the calyx has been removed; 4. a vertical section of fruit and calyx; 5. transverse section of a fruit." -Lindley, 1853

Great Burnet

"Sanguisorba officinalis. 1. a flower with a pair of bracts; 2. the same with half the calyx cut away;…

"Combretum (or Poivrea) purpureum. 1. a flower cut open; 2. a section of the ovary." -Lindley, 1853

Bushwillow

"Combretum (or Poivrea) purpureum. 1. a flower cut open; 2. a section of the ovary." -Lindley, 1853

Flower of Ranunculus bulbosus, or buttercup, insection.

Buttercup

Flower of Ranunculus bulbosus, or buttercup, insection.

Akene of a Buttercup.

Buttercup

Akene of a Buttercup.

"Ceratocephalus orthoceras. 1. flower; 2. ripe fruit." -Lindley, 1853

Buttercup

"Ceratocephalus orthoceras. 1. flower; 2. ripe fruit." -Lindley, 1853

A type of flower.

Buttercup

A type of flower.

Akene of a Buttercup, divided lengthwise, to show the contained seed.

Akene of a Buttercup

Akene of a Buttercup, divided lengthwise, to show the contained seed.

Ranunculus bulbosus or the bulbous buttercup is a perennial weed of the Buttercup family, Ranunculaceae.

Bulbous Buttercup

Ranunculus bulbosus or the bulbous buttercup is a perennial weed of the Buttercup family, Ranunculaceae.

Section of the ovary of a Buttercup, lengthwise, showing its ascending ovule.

Ovary of a Buttercup

Section of the ovary of a Buttercup, lengthwise, showing its ascending ovule.

Butternut branch, with accessory buds, the uppermost above the axil.

Butternut Branch

Butternut branch, with accessory buds, the uppermost above the axil.

"Pinguicula vulgaris. 1. calyx, &c. 2. stamen; 3. pistil; 4. longitudinal section of it; 5. half a fruit; 6. seeds, natural size; 7. embryo very much magnified." -Lindley, 1853

Common Butterwort

"Pinguicula vulgaris. 1. calyx, &c. 2. stamen; 3. pistil; 4. longitudinal section of it; 5. half a fruit;…

"Brunia japonica. 1. a flower; 2. a perpendicular section of the pistil; 3. a head of fruit; 4. a section of a seed." -Lindley, 1853

Butttonbush

"Brunia japonica. 1. a flower; 2. a perpendicular section of the pistil; 3. a head of fruit; 4. a section…

"Byrsanthus Brownii. 1. diagram of the flower; 2. section of a flower; 3. section across the ovary; 4. section of a seed." -Lindley, 1853

Byrsanthus

"Byrsanthus Brownii. 1. diagram of the flower; 2. section of a flower; 3. section across the ovary;…

Various species of cacti. a, Saguaro (Cereus giganteus); b, Paddle Cactus (Opuntia coccinellifera); c, Fishhook Cactus (Mammillaria pectinata); d, Orchid Cactus (Phyllocactus anguliger).

Various Cacti

Various species of cacti. a, Saguaro (Cereus giganteus); b, Paddle Cactus (Opuntia coccinellifera);…

A cactus blossom.

Cactus

A cactus blossom.

"Cereus speciosissimus. 1. section of the fruit of Opuntia deillenii; 2. of the seed; 3. section of seed of Mammillaria." -Lindley, 1853

Cactus

"Cereus speciosissimus. 1. section of the fruit of Opuntia deillenii; 2. of the seed; 3. section of…

The Coast Barrel Cactus (Ferocactus viridescens) is a cactus seen throughout southern California.

Coast Barrel Cactus

The Coast Barrel Cactus (Ferocactus viridescens) is a cactus seen throughout southern California.

A cross section of the fruit of the black calabash tree (Crescentia cucurbitina), native to Florida.

Black Calabash Fruit

A cross section of the fruit of the black calabash tree (Crescentia cucurbitina), native to Florida.

Native to Florida, Crescentia obovata or the Black Calabash tree is a flowering plant of the Bignoniaceae family.

Black Calabash Tree

Native to Florida, Crescentia obovata or the Black Calabash tree is a flowering plant of the Bignoniaceae…

"Calathea villosa; 1. a flower cut open; 2. a transverse section of the ovary; 3. a perpendicular section of it; 4. a section of the seed of Canna; 5. a section of its embryo." -Lindley, 1853

Calathea

"Calathea villosa; 1. a flower cut open; 2. a transverse section of the ovary; 3. a perpendicular section…

Magnified view of a portion of a transverse slice of stem of Calla Lily. The great spaces are tubular air-channels built up by the cells.

Calla Lily

Magnified view of a portion of a transverse slice of stem of Calla Lily. The great spaces are tubular…

"Calla palustris; 1. a flower; 2. a section of the ovary; 3. a perpendicular section of the ripe fruit; 4. a seed; 5. its longitudinal section." -Lindley, 1853

Marsh Calla

"Calla palustris; 1. a flower; 2. a section of the ovary; 3. a perpendicular section of the ripe fruit;…

Embryo of Calycanthus; upper part cut away, to show the convolute cotyledons.

Embryo of Calycanthus

Embryo of Calycanthus; upper part cut away, to show the convolute cotyledons.

The calyx and pistil of Frostweed, (Gray, 1858).

Calyx

The calyx and pistil of Frostweed, (Gray, 1858).

Calyx of Chickory.

Calyx

Calyx of Chickory.

Calyx of Sunflower.

Calyx

Calyx of Sunflower.

Calyx of Helenium.

Calyx

Calyx of Helenium.

Calyx of Dandelion, showing pappus of downy hairs.

Calyx

Calyx of Dandelion, showing pappus of downy hairs.

Calyx of Sowthistle, showing pappus of downy hairs.

Calyx

Calyx of Sowthistle, showing pappus of downy hairs.

The Akanthos Calyx are the leaves and flower of the Akanthos Mollis.

Akanthos Calyx

The Akanthos Calyx are the leaves and flower of the Akanthos Mollis.

The two-cleft calyx and pod of Claytonia or Spring Beauty, (Gray, 1858).

Claytonia Calyx

The two-cleft calyx and pod of Claytonia or Spring Beauty, (Gray, 1858).

Calyx of the flower of the Morning Glory.

Morning Glory calyx

Calyx of the flower of the Morning Glory.

Calyx of a prunella plant.

Prunella calyx

Calyx of a prunella plant.

"Calyx of a spelt plant."—Finley, 1917

Spelt calyx

"Calyx of a spelt plant."—Finley, 1917

A type of flower.

Campanula

A type of flower.

Silene dioica or the red campion was once known as Lychnis diurna and is a member of the Caryophyllaceae family.

Red Campion

Silene dioica or the red campion was once known as Lychnis diurna and is a member of the Caryophyllaceae…

Streptocarpus rexii is known as the Cape Primrose and is not actually a primrose but in the Gesneriaceae family.

Cape Primrose

Streptocarpus rexii is known as the Cape Primrose and is not actually a primrose but in the Gesneriaceae…

"Capsicum, a genus of annual, sub-shrubby plants, with a wheel-shaped corolla, projecting and converging stamens, and a many-seeded berry." -Vaughan, 1906

Capsicum

"Capsicum, a genus of annual, sub-shrubby plants, with a wheel-shaped corolla, projecting and converging…

This is a classification of a type of fruit.

Capsule (fruit)

This is a classification of a type of fruit.

Compound Umbel of Caraway.

Caraway

Compound Umbel of Caraway.

An illustration of: A, Inflorescence and cauline leaves; B, Radical leaves and root. Cardamine (Car-dá-mi-ne, Bittercress or Bitter-cress), is a large genus in the family Brassicaceae. It contains more than 150 species of annuals and perennials. The genus grows worldwide in diverse habitats, except in the Antarctic. Genus Dentaria is a synonym for Cardamine.

Cardamine

An illustration of: A, Inflorescence and cauline leaves; B, Radical leaves and root. Cardamine (Car-dá-mi-ne,…

A sawari nut from the "Caryocar butyrosum; a section of one of the lobes of its fruit." -Lindley, 1853

Sawari Nut

A sawari nut from the "Caryocar butyrosum; a section of one of the lobes of its fruit." -Lindley, 1853

This is a classification of a type of fruit.

Caryopsis

This is a classification of a type of fruit.

"Casearia grandiflora. 1. part of a calyx split open; 2. the pistil half grown; 3. section across the ovary; 4. section of seed; 5. seed; 6. aril, removed from the seed." -Lindley, 1853

Casearia

"Casearia grandiflora. 1. part of a calyx split open; 2. the pistil half grown; 3. section across the…

"Cashew Nut. Cashew, a tree common in the West Indies. Its fruit is called the cashew nut. The nut is small, kidney-shaped, ash-gray, and contains an acrid juice." -Vaughan, 1906

Cashew Branch

"Cashew Nut. Cashew, a tree common in the West Indies. Its fruit is called the cashew nut. The nut is…

"Sicana odorifera. a, fruit; b, female flower; c, male flower." -Whitney, 1911

Cassabanana

"Sicana odorifera. a, fruit; b, female flower; c, male flower." -Whitney, 1911

"Cassipourea elliptica. 1. a flower; 2. stamens; 3. pistil; 4. cross section of the ovary." -Lindley, 1853

Cassipourea

"Cassipourea elliptica. 1. a flower; 2. stamens; 3. pistil; 4. cross section of the ovary." -Lindley,…