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Dead-Nettle (Lamium), with labiate.

Dead-Nettle

Dead-Nettle (Lamium), with labiate.

A type of flower.

Deadnettle

A type of flower.

Stems woody at least at base, arching; flowers purple-pink, in auxiliary clusters.

Decodon

Stems woody at least at base, arching; flowers purple-pink, in auxiliary clusters.

Extending or running down on another structure, as a leaf on a stem or a tubercle on an achene.

Decurrent

Extending or running down on another structure, as a leaf on a stem or a tubercle on an achene.

Shaped like an equalateral triangle or the Greek letter delta.

Deltoid

Shaped like an equalateral triangle or the Greek letter delta.

A slightly-toothed fern with fronds ranging between 1 foot and 2 feet in length. It is a long and slender plant, commonly found in tropical America.

Pteris Denticulata

A slightly-toothed fern with fronds ranging between 1 foot and 2 feet in length. It is a long and slender…

Also known as Washingtonia filifera. A palm tree native to the desert oases of the southwest United States.

Branch of Desert Fan Palm

Also known as Washingtonia filifera. A palm tree native to the desert oases of the southwest United…

Leaves leathery, broad, and with a conspicuous vein running just inside the margin.

Desmothamnus

Leaves leathery, broad, and with a conspicuous vein running just inside the margin.

"Deutzia crenata. 1. a flower with the petals removed; 2. a fruit; 3. a portion of the same, showing the placentation; 4. section of a seed very highly magnified." -Lindley, 1853

Deutzia

"Deutzia crenata. 1. a flower with the petals removed; 2. a fruit; 3. a portion of the same, showing…

"Martynia lutea. 1. a flower; 2. the pistil; 3. a section of its ovary." -Lindley, 1853

Devil's Claw

"Martynia lutea. 1. a flower; 2. the pistil; 3. a section of its ovary." -Lindley, 1853

forking regularly by twos.

Dichotomous

forking regularly by twos.

Spikelets subtended by conspicuous white or partly white bracts.

Dichromena

Spikelets subtended by conspicuous white or partly white bracts.

Flowers without small appendages between the sepals.

Didiplis

Flowers without small appendages between the sepals.

"A very curious and interesting genus of plants of the natural order Droseraceae, having a 5-partite calyx, 5 petals, 10-20 stamens, and one style, with 5 closely united stigmata. Only one species is known, Dionaea muscipula, sometimes called Venus's Fly-trap and the Carolina Catchfly Plant." — Chambers' Encyclopedia, 1875

Dionaea

"A very curious and interesting genus of plants of the natural order Droseraceae, having a 5-partite…

"Diplopteris paralias; 1. a flower-bud, showing the double glands of the calyx; 2. an expanded flower; 3. the carpels; 4. ripe fruit of Ryssopteris timorensis." -Lindley, 1853

Diplopterys

"Diplopteris paralias; 1. a flower-bud, showing the double glands of the calyx; 2. an expanded flower;…

Diplusodon arboreus is a flowering plant of the Lythraceae family.

Diplusodon

Diplusodon arboreus is a flowering plant of the Lythraceae family.

"Dipterocarpus trinervis. a an anther; b a perpendicular, c a transverse, section of an ovary; d a fruit; e section of seed of Dryobalanops camphora; f its embryo unfolded." -Lindley, 1853

Dipterocarpus

"Dipterocarpus trinervis. a an anther; b a perpendicular, c a transverse, section of an ovary; d a fruit;…

Cut into numerous very fine segements or divisions.

Dissected

Cut into numerous very fine segements or divisions.

Coming off in two ranks.

Distichous

Coming off in two ranks.

Diverging at a wide angle.

Divaricate

Diverging at a wide angle.

"Cuscuta verrucosa. 1. ovary and calyx; 2. section of do.; 3. its fruit; 4. section of a seed of a Cuscuta; 5. its embryo pulled out." -Lindley, 1853

Dodder

"Cuscuta verrucosa. 1. ovary and calyx; 2. section of do.; 3. its fruit; 4. section of a seed of a Cuscuta;…

"Corolla, scales and stamens of, 1. Cuscuta europaea; 2. Cuscuta trifolii." -Lindley, 1853

Greater Dodder

"Corolla, scales and stamens of, 1. Cuscuta europaea; 2. Cuscuta trifolii." -Lindley, 1853

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

Dogwood

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

The English Dogwood (Philadelphus coronarius) is a deciduous shrub, here showing its epigynous stamens and petals growing on top of the ovary.

English Dogwood

The English Dogwood (Philadelphus coronarius) is a deciduous shrub, here showing its epigynous stamens…

The dorian (Durio zibethinus) is the fruit of the dorian tree in the Bombacaceae family. The fruit is cultivated in many places including the West Indies, Florida, and Cambodia.

Dorian

The dorian (Durio zibethinus) is the fruit of the dorian tree in the Bombacaceae family. The fruit is…

"Eremocarpus setigerus. 1. a young pistil; 2. a ripe fruit after dehiscing." -Lindley, 1853

Doveweed

"Eremocarpus setigerus. 1. a young pistil; 2. a ripe fruit after dehiscing." -Lindley, 1853

A fern with fronds ranging between 1.5 feet and 3 feet in length.

Polypodium Drepanum

A fern with fronds ranging between 1.5 feet and 3 feet in length.

An illustration of duckweed. Duckweed is an important food source for waterfowl and are eaten by humans in some parts of Southeast Asia (as khai-nam). Some duckweeds are used in freshwater aquariums and ponds where they may spread rapidly, although in a large pond they may be difficult to eradicate once established. The plants can provide nitrate removal (if cropped) and cover for fry. The plants are used as shelter by pond water species, such as bullfrogs and bluegills. The duckweeds are important in the process of bioremediation because they grow rapidly, absorbing excess mineral nutrients, particularly nitrogen and phosphates. A cover of duckweeds will reduce evaporation of water compared to a clear surface.

Duckweed

An illustration of duckweed. Duckweed is an important food source for waterfowl and are eaten by humans…

An illustration of duckweed. Duckweed is an important food source for waterfowl and are eaten by humans in some parts of Southeast Asia (as khai-nam). Some duckweeds are used in freshwater aquariums and ponds where they may spread rapidly, although in a large pond they may be difficult to eradicate once established. The plants can provide nitrate removal (if cropped) and cover for fry. The plants are used as shelter by pond water species, such as bullfrogs and bluegills. The duckweeds are important in the process of bioremediation because they grow rapidly, absorbing excess mineral nutrients, particularly nitrogen and phosphates. A cover of duckweeds will reduce evaporation of water compared to a clear surface.

Duckweed

An illustration of duckweed. Duckweed is an important food source for waterfowl and are eaten by humans…

An illustration of duckweed inflorescence containing two male flowers each of one stamen and a female flower, the whole enclosed in a sheath. Duckweed is an important food source for waterfowl and are eaten by humans in some parts of Southeast Asia.

Duckweed Inflorescence

An illustration of duckweed inflorescence containing two male flowers each of one stamen and a female…

Stem round, hollow; spikelets borne in axillary as well as terminal clusters.

Dulichium

Stem round, hollow; spikelets borne in axillary as well as terminal clusters.

"The form of Dumoutier is merely a refinement on the Montreuil method. The formation of the tree commences with the inferior limbs and proceeds towards the center, he branches being lowered from time to time as the tree acquires strength. What is most worthy of notice in this method is the management of the subordinates in the pruning for fruit." — Encyclopedia Britannica, 1893

Dumontier's Fan

"The form of Dumoutier is merely a refinement on the Montreuil method. The formation of the tree commences…

"Monotropa Hypopithys. 2. a flower; 3. a pistil; 4. the same divided perpendicularly; 5. a seed; 6. seed of Pterospora andromedea; 7. section of it." -Lindley, 1853

Dutchman's Pipe

"Monotropa Hypopithys. 2. a flower; 3. a pistil; 4. the same divided perpendicularly; 5. a seed; 6.…

"Aristolochia galeata. 1. fruit of an Aristolochia; 2. cross section of it; 3. half its seed." -Lindley, 1853

Mottled Dutchman's Pipe

"Aristolochia galeata. 1. fruit of an Aristolochia; 2. cross section of it; 3. half its seed." -Lindley,…

Also known as Quercus velutina. The branch of an Eastern Black Oak tree, native to eastern North America.

Branch of Eastern Black Oak

Also known as Quercus velutina. The branch of an Eastern Black Oak tree, native to eastern North America.

Also known as Populus deltoides. The branch of an Eastern Cottonwood, native throughout the eastern, central, and southwestern United States.

Branch of Eastern Cottonwood

Also known as Populus deltoides. The branch of an Eastern Cottonwood, native throughout the eastern,…

Also known as Juniperus virginiana. Native throughout the United States.

Branch of Eastern Red Juniper

Also known as Juniperus virginiana. Native throughout the United States.

Inflourescence not plum-like nor feathery; panicle obviously branched.

Echinochloa

Inflourescence not plum-like nor feathery; panicle obviously branched.

All flowers with stamens and carpels.

Echinodorus

All flowers with stamens and carpels.

Edelweiss (Leontopodium alpinum) is a European mountain flower of the Asteraceae or daisy family.

Edelweiss

Edelweiss (Leontopodium alpinum) is a European mountain flower of the Asteraceae or daisy family.

This plant is edible; belonging to the cucurbitaceae.

Sechium Edule

This plant is edible; belonging to the cucurbitaceae.

The Eggplant (Solanum melongena) is a flowering plant in the Solanaceae family of nightshades. Its fruit is a common vegetable in cooking.

Eggplant

The Eggplant (Solanum melongena) is a flowering plant in the Solanaceae family of nightshades. Its fruit…

Leaves large and dilated with inflated petioles.

Eichhornia

Leaves large and dilated with inflated petioles.

An indian Rubber Fig, Ficus Elastica, shoot. The stipule, s, is shown to illustrate a new leaf growth on the plant.

Indian Rubber Fig Ficus Elastica Shoot

An indian Rubber Fig, Ficus Elastica, shoot. The stipule, s, is shown to illustrate a new leaf growth…

"Sambucus nigra; 1. a flower; 2. a young pistil; 3. a cross section of its ovary; 4. a perpendicular section of the fruit." -Lindley, 1853

Elder

"Sambucus nigra; 1. a flower; 2. a young pistil; 3. a cross section of its ovary; 4. a perpendicular…

"Branch with Inflorescence of Elder (Sambucus Canadensis). (a), part of the inflorescence; (b), fruits." -Whitney, 1911

American Elderberry

"Branch with Inflorescence of Elder (Sambucus Canadensis). (a), part of the inflorescence; (b), fruits."…

A combination pumping and electric-light plant driven by a gravity waterwheel.

Electric Plant

A combination pumping and electric-light plant driven by a gravity waterwheel.

An elegant form of the Polypodium vulgare. The fronds are very finely divided.

Polypodium Vulgare Elegantissimum

An elegant form of the Polypodium vulgare. The fronds are very finely divided.

Plant body made p of smooth, proliferating stems.

Eleocharis

Plant body made p of smooth, proliferating stems.

Leaf-sheaths present only at the base of stem; flowers in one group.

Eleocharis

Leaf-sheaths present only at the base of stem; flowers in one group.

Sheaths at base of stem with edges united to form tube.

Eleocharis

Sheaths at base of stem with edges united to form tube.

Pertains to shape.

Elliptic

Pertains to shape.

"Ulmus campestris. 1. its flower; 2. its pistil; 3. its fruit; 4. its embryo." -Lindley, 1853

Elm

"Ulmus campestris. 1. its flower; 2. its pistil; 3. its fruit; 4. its embryo." -Lindley, 1853

Now known as Ulmus procera, the image shows a "Flowering Branch and Foliage of English Elm (Ulmus campestris), with flower and fruit on larger scale." -Whitney, 1911

English Elm

Now known as Ulmus procera, the image shows a "Flowering Branch and Foliage of English Elm (Ulmus campestris),…

Rooted to substratum; erect and extending upward out of water.

Emergent

Rooted to substratum; erect and extending upward out of water.

Also known as Quercus emoryi. The branch of an Emory Oak tree, native to the southwestern United States.

Branch of Emory Oak

Also known as Quercus emoryi. The branch of an Emory Oak tree, native to the southwestern United States.

"Pholidia scoparia. 1. a corolla opened; 2. perpendicular section of ripe fruit; 3. cross section of it; 4. longitudinal section of a seed." -Lindley, 1853

Silver Emubush

"Pholidia scoparia. 1. a corolla opened; 2. perpendicular section of ripe fruit; 3. cross section of…

"Encrinus." — Chambers' Encyclopedia, 1875

Encrinus

"Encrinus." — Chambers' Encyclopedia, 1875

Stamens of a flower situated above a receptacle holding the ovary.

Epigynous Stamens

Stamens of a flower situated above a receptacle holding the ovary.

Pertaining to leaves; comming off in two ranks, making the base appear flattened.

Equitant

Pertaining to leaves; comming off in two ranks, making the base appear flattened.