Illustrated are the pistillate flowers of corylus rostrata. They are small, scaly buds with only the red style protruding.

Corylus Rostrata

Illustrated are the pistillate flowers of corylus rostrata. They are small, scaly buds with only the…

Cosmos bipinnatus is an annual that grows seven to ten feet tall. The flowers are white, pink, or crimson. It is native to Mexico.

Cosmos Bipinnatus

Cosmos bipinnatus is an annual that grows seven to ten feet tall. The flowers are white, pink, or crimson.…

Cosmos sulphureus grows four to seven feet tall. The flowers are two to three inches across and are pale, pure, or golden yellow. The plant is native to Mexico.

Cosmos Sulphureus

Cosmos sulphureus grows four to seven feet tall. The flowers are two to three inches across and are…

Cotoneaster horizontalis is a low shrub with almost horizontal branches. The flowers are erect and pink. The plant is native to China.

Cotoneaster Horizontalis

Cotoneaster horizontalis is a low shrub with almost horizontal branches. The flowers are erect and pink.…

Cotoneaster hupehensis is a shrub that grows five feet tall and has slender, spreading branches. The flowers are yellow and bloom in May. The plant is native to China.

Cotoneaster Hupehensis

Cotoneaster hupehensis is a shrub that grows five feet tall and has slender, spreading branches. The…

Cotyledon secunda is stemless and the leaves grow in a rosette. The flowers grow in a one sided, recurved spike. The flowers are reddish yellow and bloom June to August.

Cotyledon Secunda

Cotyledon secunda is stemless and the leaves grow in a rosette. The flowers grow in a one sided, recurved…

Cannon ball tree is the common name of couroupita guianensis. Illustrated is the trunk and the hanging flowers and fruits.

Cannon Ball Tree

Cannon ball tree is the common name of couroupita guianensis. Illustrated is the trunk and the hanging…

Illustrated is a flower of the cannon ball tree with a fallen petal. The flowers are about two inches long. They are yellow and red tinged on the exterior and crimson-lilac within.

Flower of Cannon Ball Tree

Illustrated is a flower of the cannon ball tree with a fallen petal. The flowers are about two inches…

Illustrated is the common cranberry, vaccinium macrocarpon. It grows wild only in North American. The berries ripen during September and October.

Cranberry

Illustrated is the common cranberry, vaccinium macrocarpon. It grows wild only in North American. The…

Crassula quadrifida is a perennial with oblong leaves and white flowers tinged with red.

Crassula Quadrifida

Crassula quadrifida is a perennial with oblong leaves and white flowers tinged with red.

Crataegus coccinioides sometimes grows twenty feet tall. The branches are stout and spreading, forming a broad, handsome head. There are five to seven flowers in a cluster. The fruit is dark crimson and appears in early October.

Crataegus Coccinioides

Crataegus coccinioides sometimes grows twenty feet tall. The branches are stout and spreading, forming…

The common name of crataegus oxycantha paulii is Paul's thorn. It has double, bright scarlet flowers. It is one of the most showy species.

Crataegus Oxycantha Paulii

The common name of crataegus oxycantha paulii is Paul's thorn. It has double, bright scarlet flowers.…

The flowers are crepis rubra are red and usually grow alone at the end of each stem. It grows between six and eighteen inches tall.

Crepis Rubra

The flowers are crepis rubra are red and usually grow alone at the end of each stem. It grows between…

The common name of crinum americanum is Florida swamp lily. There are usually four flowers on an erect scape. It is native in river swamps of Georgia and Florida.

Crinum Americanum

The common name of crinum americanum is Florida swamp lily. There are usually four flowers on an erect…

Crinum powellii has about eight flowers. The flowers are a dark rose color. There are about twenty spreading leaves.

Crinum Powellii

Crinum powellii has about eight flowers. The flowers are a dark rose color. There are about twenty spreading…

Crocosmia aurea imperialis grows four feet high. The flowers are orange yellow.

Crocosmia Aurea Imperialis

Crocosmia aurea imperialis grows four feet high. The flowers are orange yellow.

The common name of crocus susianus is cloth of gold crocus. The flowers are orange-yellow and brownish or striped on the outside. It blooms early, in February or March.

Crocus Susianus

The common name of crocus susianus is cloth of gold crocus. The flowers are orange-yellow and brownish…

Crocus vernus is the most common garden crocus. The flowers are lilac, white, or purple striped with lemon-yellow anthers and orange-yellow style branches. It is native to south Europe.

Crocus Vernus

Crocus vernus is the most common garden crocus. The flowers are lilac, white, or purple striped with…

Crocus speciosus aitchisonii has pale bluish lilac flowers. It is large and graceful.

Crocus Speciosus Aitchisonii

Crocus speciosus aitchisonii has pale bluish lilac flowers. It is large and graceful.

Cryptanthus zonatus has oblong, tapering leaves. The leaves are marked with bands of white. The flowers are white.

Cryptanthus Zonatus

Cryptanthus zonatus has oblong, tapering leaves. The leaves are marked with bands of white. The flowers…

Pictured are the staminate and pistillate flowers of cucumis sativus.

Cucumis Sativus

Pictured are the staminate and pistillate flowers of cucumis sativus.

Cuphea hyssopifolia has a shrubby stem and numerous branches. The flowers are scarcely longer than the leaves. The plant is native to Mexico.

Cuphea Hyssopifolia

Cuphea hyssopifolia has a shrubby stem and numerous branches. The flowers are scarcely longer than the…

The branches of cuphea ignea are somewhat angled. The flowers stalks are two to four times long than the leaf stalks. The plant is native to Mexico.

Cuphea Ignea

The branches of cuphea ignea are somewhat angled. The flowers stalks are two to four times long than…

Curculiga latifolia grows two to three feet tall. The flowers are bright yellow and grow in a dense clusters near the base of the plant. The plant is native to Indian and Malaysia.

Curculiga Latifolia

Curculiga latifolia grows two to three feet tall. The flowers are bright yellow and grow in a dense…

The common name of curcuma petiolata is queen lily. The leaves are six to eight inches long. The flowers are pale yellow. The plant is native to India.

Curcuma Petiolata

The common name of curcuma petiolata is queen lily. The leaves are six to eight inches long. The flowers…

Illustrated is the queen lily, curcuma petiolata, in flower. The flowers are pale yellow. The flowers spikes are five to six inches long.

Curcuma Petiolata

Illustrated is the queen lily, curcuma petiolata, in flower. The flowers are pale yellow. The flowers…

The flowers of cymbidium giganteum are dull purple, brownish, or yellowish green striped with purple. The plant is native to Nepal.

Cymbidium Giganteum

The flowers of cymbidium giganteum are dull purple, brownish, or yellowish green striped with purple.…

The flowers of cymbopetalum penduliflorum grow alone at the end of each stem. The petals and thick and fleshy and resemble the human ear. The flowers are pungently aromatic.

Cymbopetalum Penduliflorum

The flowers of cymbopetalum penduliflorum grow alone at the end of each stem. The petals and thick and…

Cyperorchis elegans is an orchid native to the Himalayas. The flowers are yellow and one and a half to two inches across.

Cyperorchis Elegans

Cyperorchis elegans is an orchid native to the Himalayas. The flowers are yellow and one and a half…

The flowers of cypripedium pubescens bloom in May and June. The leaves are oval. The petals are usually twisted.

Cypripedium Pubescens

The flowers of cypripedium pubescens bloom in May and June. The leaves are oval. The petals are usually…

Cypripedium spectabile is a stout plant. The flowers bloom in June. It is found from Maine, New England, Minnesota, and the mountains of North Carolina.

Cypripedium Spectabile

Cypripedium spectabile is a stout plant. The flowers bloom in June. It is found from Maine, New England,…

Cypripedium californicum plants are either slender or stout. The flowers are small with six to twelve open at the same time.

Cypripedium Californicum

Cypripedium californicum plants are either slender or stout. The flowers are small with six to twelve…

Cytisus canariensis is a much branched shrub that grows six feet tall. The flowers are fragrant and bright yellow. The flowers bloom May to July.

Cytisus Canariensis

Cytisus canariensis is a much branched shrub that grows six feet tall. The flowers are fragrant and…

Cactus dahlia is the common name of dahlia juarezii. The flowers heads are a brilliant scarlet. The flowers are irregular in length.

Original Cactus Dahlia

Cactus dahlia is the common name of dahlia juarezii. The flowers heads are a brilliant scarlet. The…

Dahlia coccinea flowers vary in color from scarlet through orange and yellow. There is no double form.

Dahlia Coccinea

Dahlia coccinea flowers vary in color from scarlet through orange and yellow. There is no double form.

Wild asters are also called daisies. This is a Michaelmas daisy.

Wild Aster

Wild asters are also called daisies. This is a Michaelmas daisy.

The leaves of dalibarda repens are heart shaped and wavy toothed. The flowers are white with one or two on each stem.

Dalibarda Repens

The leaves of dalibarda repens are heart shaped and wavy toothed. The flowers are white with one or…

Daphne cneorum has long, trailing branches. The flower heads are pink and fragrant. The flowers bloom in April and May.

Daphne Cneorum

Daphne cneorum has long, trailing branches. The flower heads are pink and fragrant. The flowers bloom…

Delphinium ajacis grows about eighteen inches tall. The flowers are showy and blue or violet. The flowers also vary to white.

Delphinium Ajacis

Delphinium ajacis grows about eighteen inches tall. The flowers are showy and blue or violet. The flowers…

Delphinium formosum has a strong stem that grows two to three feet tall. The flowers are blue with indigo margins. The flowers bloom in June and July.

Delphinium Formosum

Delphinium formosum has a strong stem that grows two to three feet tall. The flowers are blue with indigo…

Dendrobium dearei has white flowers that are about two inches across. The plant is native to the Philippines.

Dendrobium Dearei

Dendrobium dearei has white flowers that are about two inches across. The plant is native to the Philippines.

Dendrobium superbiens is native to Australia. The flowers are two inches across and crimson-purple. The petals are often bordered with white.

Dendrobium Superbiens

Dendrobium superbiens is native to Australia. The flowers are two inches across and crimson-purple.…

The common name of dentaria diphylla is pepper root. The plant grows eight to sixteen inches tall. The flowers are white inside and pale purple or pink inside.

Dentaria Diphylla

The common name of dentaria diphylla is pepper root. The plant grows eight to sixteen inches tall. The…

Deutzia gracilis grows three feet tall and has slender, arching branches. The flowers are pure white. The plant is native to Japan.

Deutzia Gracilis

Deutzia gracilis grows three feet tall and has slender, arching branches. The flowers are pure white.…

The deutzia purpurascens shrub grows three feet tall with slender, arching branches. The flowers have spreading petals and are white and purple on the outside.

Deutzia Purpurascens

The deutzia purpurascens shrub grows three feet tall with slender, arching branches. The flowers have…

Deutzia lemoinei grows three feet tall. The flowers are pure white. The leaves have finely serrated edges.

Deutzia Lemoinei

Deutzia lemoinei grows three feet tall. The flowers are pure white. The leaves have finely serrated…

In true dewberries the center flowers open first. The flowers and fruits are few and scattereed.

Lucretia Dewberry

In true dewberries the center flowers open first. The flowers and fruits are few and scattereed.

Dewberries are trailing blackberries. The bartel variety grows wild from New York to Kansas and southwest.

Bartel Dewberry

Dewberries are trailing blackberries. The bartel variety grows wild from New York to Kansas and southwest.

Sweet William is the common name of dianthus barbatus. The stems grows ten to twenty inches tall. The flowers grow in rounded, dense clusters. The flowers are red, rose, purple, or white.

Sweet William

Sweet William is the common name of dianthus barbatus. The stems grows ten to twenty inches tall. The…

Dianthus Superbus is found from Norway to Japan and Spain. The flowers are lilac and very fragrant.

Dianthus Superbus

Dianthus Superbus is found from Norway to Japan and Spain. The flowers are lilac and very fragrant.

Maiden pink is the common name of dianthus deltoides. The plant is densely tufted and grows six to ten inches tall. It blooms in spring and early summer. The flowers are small and deep red with a crimson eye.

Maiden Pink

Maiden pink is the common name of dianthus deltoides. The plant is densely tufted and grows six to ten…

Dianthus chinensis flowers are large, clustered, and pink or lilac. The plant is native to China and Japan.

Dianthus Chinensis

Dianthus chinensis flowers are large, clustered, and pink or lilac. The plant is native to China and…

Diascia barberae blooms freely in the summer. The flowers are rose pink with a yellow, green dotted spot in the throat.

Diascia Barberae

Diascia barberae blooms freely in the summer. The flowers are rose pink with a yellow, green dotted…

Bleeding heart is the common name of dicentra spectabilis. The plant grows one to two feet tall. The flowers are large and deep rosy red. The plant is native to Japan.

Bleeding Heart

Bleeding heart is the common name of dicentra spectabilis. The plant grows one to two feet tall. The…

Dicentra formosa is native from central California to British Columbia. The flowers are rose purple and grow in clusters at the end of the stems. The plant is stemless with a fleshy rootstock.

Dicentra Formosa

Dicentra formosa is native from central California to British Columbia. The flowers are rose purple…

Dutchman's breeches is the common name of dicentra cucullaria. The flowers are white tipped with creamy yellow. The plant is found from Nova Scotia to Georgia and also along the Columbia river.

Dutchman's Breeches

Dutchman's breeches is the common name of dicentra cucullaria. The flowers are white tipped with creamy…

Diervilla japonica is native to Japan and China. It blooms in May and June. The flowers usually grow in three flowered clusters.

Diervilla Japonica

Diervilla japonica is native to Japan and China. It blooms in May and June. The flowers usually grow…

The common name of digitalis purpurea is common foxglove. Illustrated is the juvenile or foliage stage used as an edging. The flowers are large, two inches long, and range from purple and more or less spotted.

Digitalis Purpurea

The common name of digitalis purpurea is common foxglove. Illustrated is the juvenile or foliage stage…

Foxglove is the common name of digitalis purpurea. It is native from Great Britain, west and central Europe, to Scandinavia. The flowers are purple and spotted.

Digitalis Purpurea

Foxglove is the common name of digitalis purpurea. It is native from Great Britain, west and central…

Dimorphotheca aurantiaca is a variety of cape marigold. The flowers are large and orange yellow. It is a showy plant growing twelve to sixteen inches tall.

Dimorphotheca Aurantiaca

Dimorphotheca aurantiaca is a variety of cape marigold. The flowers are large and orange yellow. It…