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Digitalus purpurea is a flowering plant that is also known as the Common or Purple Foxglove.

Foxglove

Digitalus purpurea is a flowering plant that is also known as the Common or Purple Foxglove.

The ringent and spurred corolla of the foxglove or Linaria.

Foxglove Corolla

The ringent and spurred corolla of the foxglove or Linaria.

"Foxtail grass, the common name given to certain grasses, because of the shape of the large clusters in which the flowers are arranged." -Foster, 1921

Foxtail Grass

"Foxtail grass, the common name given to certain grasses, because of the shape of the large clusters…

Setaria glauca or the Yellow Foxtail is a monocot weed in the Poaceae family.

Yellow Foxtail

Setaria glauca or the Yellow Foxtail is a monocot weed in the Poaceae family.

Also known as Abies fraseri. A species of fir native to the eastern United States mountains.

Pine Cone of Fraser Fir

Also known as Abies fraseri. A species of fir native to the eastern United States mountains.

Also known as Magnolia fraseri. The branch of a Fraser Magnolia tree, native to the southeastern United States.

Branch of Fraser Magnolia

Also known as Magnolia fraseri. The branch of a Fraser Magnolia tree, native to the southeastern United…

Also known as Populus fremontii. The branch of a Fremont Cottonwood tree, native to western North America.

Branch of Fremont Cottonwood

Also known as Populus fremontii. The branch of a Fremont Cottonwood tree, native to western North America.

"A winter annual of the mustard family, which is quite sure to be found producing much seed on roadsides and on other waste areas."—The Federal Digest, 1921

French-Weed

"A winter annual of the mustard family, which is quite sure to be found producing much seed on roadsides…

The fruit of Freycinetia imbricata, a flowering plant native to Southeast Asia.

Freycinetia imbricata

The fruit of Freycinetia imbricata, a flowering plant native to Southeast Asia.

A type of flower.

Frog Bit

A type of flower.

Cross section of the ovary of Frost-Weed (Helianthemum), with three parietal placenta, bearing ovules.

Ovary of Frost Weed

Cross section of the ovary of Frost-Weed (Helianthemum), with three parietal placenta, bearing ovules.

Fruit of senecio vulgaris.

Senecio vulgaris fruit

Fruit of senecio vulgaris.

Fruit from a common sorrel plant.

Sorrel fruit

Fruit from a common sorrel plant.

A shrubby flower with white petals. It can grow up to 3 feet, and is native to the Canary Islands.

Pyrethrum Frutescens

A shrubby flower with white petals. It can grow up to 3 feet, and is native to the Canary Islands.

Leaf-sheaths scattered along stem; flowers in several groups.

Fuirena

Leaf-sheaths scattered along stem; flowers in several groups.

Stem topped by 1 to several spikelets; leaf-sheath distributed along the stem.

Fuirena

Stem topped by 1 to several spikelets; leaf-sheath distributed along the stem.

Each scale of spikelet bearing a bristle or awn near the apex.

Fuirena

Each scale of spikelet bearing a bristle or awn near the apex.

Fumaria is a genus of about fifty annual herbaceous flowering plants in the family Fumariaceae, native to temperate Europe and Asia, though some species are weedy or adventive in North and South America, Australia, etc. It is closely allied to Corydalis (from which it differs chiefly in having single-seeded fruits), and some botanists combine the two genera. The common name is fumitory.

Fumitory

Fumaria is a genus of about fifty annual herbaceous flowering plants in the family Fumariaceae, native…

An illustration of a longitudinal section of the fumitory flower. Fumaria is a genus of about fifty annual herbaceous flowering plants in the family Fumariaceae, native to temperate Europe and Asia, though some species are weedy or adventive in North and South America, Australia, etc. It is closely allied to Corydalis (from which it differs chiefly in having single-seeded fruits), and some botanists combine the two genera. The common name is fumitory.

Fumitory Flower (Longitudinal Section)

An illustration of a longitudinal section of the fumitory flower. Fumaria is a genus of about fifty…

An illustration of the side-view of the fumitory flower Fumaria is a genus of about fifty annual herbaceous flowering plants in the family Fumariaceae, native to temperate Europe and Asia, though some species are weedy or adventive in North and South America, Australia, etc. It is closely allied to Corydalis (from which it differs chiefly in having single-seeded fruits), and some botanists combine the two genera. The common name is fumitory.

Fumitory (Side-view)

An illustration of the side-view of the fumitory flower Fumaria is a genus of about fifty annual herbaceous…

"Fumaria officinalis. 1. a flower seen from below; 2. the same from the side; 3. the pistil, stamens, and a portion of the bagged upper petal; 4. a parcel of anthers, inaccurately drawn, for the two at the sides should be half anthers; 5. the fruit." -Lindley, 1853

Common Fumitory

"Fumaria officinalis. 1. a flower seen from below; 2. the same from the side; 3. the pistil, stamens,…

A plant which produces flowers with 7 to 8 white petals. The stamens are very numerous. They bloom between February and April, and are found in Central America.

Rhipsalis Funalis

A plant which produces flowers with 7 to 8 white petals. The stamens are very numerous. They bloom between…

"Pisomyxa racodioides, Corda.-1. Natural size; 2, the fungus greatly magnified; 3, a spore-case bursting and discharging its spores." -Lindley, 1853

Fungus

"Pisomyxa racodioides, Corda.-1. Natural size; 2, the fungus greatly magnified; 3, a spore-case bursting…

Illustration of a fungus named Atrotogus hydnosporus. "Considered by Berkeley and others to be probably a secondary form of fruit (spores) of the potato-fungus itself." -Watts, 1874

Fungus

Illustration of a fungus named Atrotogus hydnosporus. "Considered by Berkeley and others to be probably…

Spindle shaped.

Fusiform

Spindle shaped.

"Woolly Oak-gall, produced by Cynips Quercus ramuli." -Lindley, 1853

Gall Wasp

"Woolly Oak-gall, produced by Cynips Quercus ramuli." -Lindley, 1853

"Gall, or Oak-apple, produced by Cynips quercus-inanis, showing the internal cobwebby structure. Gall: a vegetable excrescence produced by the deposit of the egg of an insect in the bark or leaves of a plant, ordinarily to to the action of some virus deposited by the female along with the egg, but often to the irritation of the larva." -Whitney, 1911

Oak Apple Gall

"Gall, or Oak-apple, produced by Cynips quercus-inanis, showing the internal cobwebby structure. Gall:…

A variable flower with red petals and leathery, ovate leaves. The prickles are unequally distributed, and it commonly reaches between 2 ft and 3 ft.

Rosa Gallica

A variable flower with red petals and leathery, ovate leaves. The prickles are unequally distributed,…

Also known as Quercus gambelii. The branch of a Gambel Oak tree, native to the central southwestern United States and northwestern Mexico.

Branch of Gambel Oak

Also known as Quercus gambelii. The branch of a Gambel Oak tree, native to the central southwestern…

The Gambooge tree (Garcinia gummi-gutta) is a plant in the Clusiaceae family. The species was also known as the synonyms Garcinia cambogia and Garcinia hanburyi.

Branch of Gambooge

The Gambooge tree (Garcinia gummi-gutta) is a plant in the Clusiaceae family. The species was also known…

"Cambogia gutta. 1. a female flower, with the sterile stamens surrounding the pistil; 2. a male flower; 3. an anther, which opens by throwing off a cap, in consequence of transverse dehiscence; 4. a transverse section of the ovary." -Lindley, 1853

Garcinia

"Cambogia gutta. 1. a female flower, with the sterile stamens surrounding the pistil; 2. a male flower;…

Also known as Quercus garryana. The branch of a Garry Oak tree, native from southern California to southwestern British Columbia.

Branch of Garry Oak

Also known as Quercus garryana. The branch of a Garry Oak tree, native from southern California to southwestern…

Loss in a suction gas-producer plant.

Gas-producer Plant

Loss in a suction gas-producer plant.

Used as landscaping in Florida, the Geiger tree is a tropical plant known for its flowers. "Cordia Sebestena. 1. calyx; 2. pistil; 3. transverse section of embryo." -Lindley, 1853

Geiger Tree

Used as landscaping in Florida, the Geiger tree is a tropical plant known for its flowers. "Cordia Sebestena.…

Used as landscaping in Florida, the Geiger tree is a tropical plant known for its flowers. "Cordia Sebestena. 1. calyx; 2. pistil; 3. transverse section of embryo." -Lindley, 1853

Geiger Tree

Used as landscaping in Florida, the Geiger tree is a tropical plant known for its flowers. "Cordia Sebestena.…

"6. flower of Geissoloma marginatum; 7. ditto divided perpendicularly; 9. ovule; 10. anther." -Lindley, 1853

Geissoloma

"6. flower of Geissoloma marginatum; 7. ditto divided perpendicularly; 9. ovule; 10. anther." -Lindley,…

A genus of hardy plants, Gentians belong to the order Gentianaceae. They have a bitter taste, and one species, G. lutea, is largely used as a bitter tonic in medicine. Gentians are not easy plants to establish in a garden, on account of their need of root moisture and their dislike of root disturbance. It is best to raise them from seed, although slow to germinate. The most commonly cultivated Gentian is the Alpine G. acaulis, with large, deep-blue flowers on a dwarfed plant.

Gentian

A genus of hardy plants, Gentians belong to the order Gentianaceae. They have a bitter taste, and one…

Gentiana amarella or the Autumn Gentian is a flowering plant from the family, Gentianaceae.

Autumn Gentian

Gentiana amarella or the Autumn Gentian is a flowering plant from the family, Gentianaceae.

The Great Yellow Gentian (Gentian lutea) is a flowering plant in the Gentian family, Gentianaceae.

Great Yellow Gentian

The Great Yellow Gentian (Gentian lutea) is a flowering plant in the Gentian family, Gentianaceae.

Gentianaceae, or the Gentian family, is a family of flowering plants of 87 genera and over 1500 species.

Gentiana

Gentianaceae, or the Gentian family, is a family of flowering plants of 87 genera and over 1500 species.

Geranium cutting ready to plant

Geranium cutting

Geranium cutting ready to plant

Corolla of a purple Gerardia laid open, showing the four stamens; the cross shows where the fifth stamen would be, if present.

Gerardia

Corolla of a purple Gerardia laid open, showing the four stamens; the cross shows where the fifth stamen…

"Seeds Germinating. The central figure shows a plant which has newly appeared above ground." -Whitney, 1911

Germination

"Seeds Germinating. The central figure shows a plant which has newly appeared above ground." -Whitney,…

Geum urbanum is a member of the genus Geum, a genus of hardy plants (Rosaceae). Not usually used decoratively, their five-parted flowers being borne singly at the ends of much-branching stems. The leaves are generally odd-pinnate, often with small leaflets scattered among larger ones. The style is persistent in the fruit and is often plumose, as in the purple avens (G. ciliatum), which has violet flowers. The white avens (G. canadense) has a prickly receptacle, as has the G. flavum. Among the most common species are the yellow G. strictum and the G. vernum, both found in shady, damp places.

Geum Urbanum

Geum urbanum is a member of the genus Geum, a genus of hardy plants (Rosaceae). Not usually used decoratively,…

Swollen on one side.

Gibbous

Swollen on one side.

Ginger is the dried rhizome of the tropical plant Zingiber officinale. It is used in cookery, because of its aromatic volatile oil, and as a confection, either in syrup or 'crystallized' with sugar. In medicine, it is usually employed as a carminative, usually in the form of the tincture. It is grown principally in the East Indies (its original home), the West Indies, and tropical Africa.

Ginger

Ginger is the dried rhizome of the tropical plant Zingiber officinale. It is used in cookery, because…

Chinese Ginger or fingerroot (Boesenbergia rotunda): "Flowers of Kaempferia pandurata; 2. the inner row of the corolla seen in profile. 3. the anther, enclosing the apex of the style between its lobes; 4. the style and stigma, with two abortive stamens at the base; 5. a transverse section of the ovary." -Lindley, 1853

Chinese Ginger

Chinese Ginger or fingerroot (Boesenbergia rotunda): "Flowers of Kaempferia pandurata; 2. the inner…

Dancing Girls: "Mantisia saltatoria; 1. style, stigma, and anther; 2. ovary, style, and abortive stamens." -Lindley, 1853

Dancing Girls Ginger

Dancing Girls: "Mantisia saltatoria; 1. style, stigma, and anther; 2. ovary, style, and abortive stamens."…

"Gingko biloba, or Salisburia adiantifolia. a, branchlet with male flowers." -Whitney, 1911

Ginkgo Biloba Branchlet

"Gingko biloba, or Salisburia adiantifolia. a, branchlet with male flowers." -Whitney, 1911

"Gingko biloba, or Salisburia adiantifolia. b, branchlet with female flowers." -Whitney, 1911

Ginkgo Biloba Branchlet

"Gingko biloba, or Salisburia adiantifolia. b, branchlet with female flowers." -Whitney, 1911

"Gingko biloba, or Salisburia adiantifolia. c, naked seed, immature." -Whitney, 1911

Immature Ginkgo Seed

"Gingko biloba, or Salisburia adiantifolia. c, naked seed, immature." -Whitney, 1911

"Gingko biloba, or Salisburia adiantifolia. d, naked seed, mature." -Whitney, 1911

Mature Ginkgo Seed

"Gingko biloba, or Salisburia adiantifolia. d, naked seed, mature." -Whitney, 1911

"Gingko biloba, or Salisburia adiantifolia. e, naked seed, mature, deprived of the outer fleshy testa." -Whitney, 1911

Mature Ginkgo Seed

"Gingko biloba, or Salisburia adiantifolia. e, naked seed, mature, deprived of the outer fleshy testa."…

"Branch and Root of Ginseng (Aralia ginseng)." -Whitney, 1911

Ginseng Branch and Root

"Branch and Root of Ginseng (Aralia ginseng)." -Whitney, 1911

Fruit globose, about as long as broad; leaves mostly less than 5 cm.

Glabraria

Fruit globose, about as long as broad; leaves mostly less than 5 cm.

"1. a portion of the spike of Salicornia herbacea, with the flowers lodged in the notches of the axis; 2. a flower separate." -Lindley, 1853

Glasswort

"1. a portion of the spike of Salicornia herbacea, with the flowers lodged in the notches of the axis;…

Also known as Sea Milkwort, Glaux Maritima is a hardy perennial seashore plant belonging to the order Primulaceæ. It is a common European plant with glaucous leaves and pink flowers in summer. This illustration shows the plant itself, as well as a flower (1) and a calyx (2) laid open.

Glaux Maritima

Also known as Sea Milkwort, Glaux Maritima is a hardy perennial seashore plant belonging to the order…

Leaflets many and small, usually 12-22; tree prominently thorny.

Gleditsia

Leaflets many and small, usually 12-22; tree prominently thorny.

"Globularia orientalis. 1. a flower; 2. section of calyx and ovary; 3. section of fruit." -Lindley, 1853

Globe Daisy

"Globularia orientalis. 1. a flower; 2. section of calyx and ovary; 3. section of fruit." -Lindley,…

"Globe-flower (Trollius Europaeus). The Trollius Europaeus, a ranunculaceous plant of Great Britain and the mountains of central Europe, with deeply lobed leaves and pale-yellow flowers." -Whitney, 1911

Globe Flower

"Globe-flower (Trollius Europaeus). The Trollius Europaeus, a ranunculaceous plant of Great Britain…