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Happening, or taking place, once in two years; as, a biennial election.

Once in two years.

A biennial plant of the genus Beta, which produces an edible root the first year and seed the second year.

The United States official "Biennial Register."

A genus of coarse biennial herbs (Lappa), bearing small burs which adhere tenaciously to clothes, or to the fur or wool of animals.

A biennial plant of the Parsley family (Carum Carui). The seeds have an aromatic smell, and a warm, pungent taste. They are used in cookery and confectionery, and also in medicine as a carminative.

An umbelliferous biennial plant (Daucus Carota), of many varieties.

na grass, Same as Ramie. -- China ink. See India ink. -- China pink (Bot.), an anual or biennial species of Dianthus (D. Chiensis) having variously colored single or double flowers; Indian pink. -- China root (Med.), the rootstock of a species of Smilax (S. China, from the East Indies; -- formerly much esteemed for…

A genus of biennial, poisonous, white-flowered, umbelliferous plants, bearing ribbed fruit ("seeds") and decompound leaves.

A genus of low perennial or biennial plants, the leaves of which are beset with gland-tipped bristles. See Sundew. Gray.

us Digitalis. The common English foxglove (Digitalis purpurea) is a handsome perennial or biennial plant, whose leaves are used as a powerful medicine, both as a sedative and diuretic. See Digitalis. Pan through the pastures oftentimes hath run To pluck the speckled foxgloves from their stem. W. Browne.…

d as an antiscorbutic. Climbing fumitory (Bot.), the Alleghany vine (Adlumia cirrhosa); a biennial climbing plant with elegant feathery leaves and large clusters of pretty white or pinkish flowers looking like grains of rice.

A biennial weed (Cynoglossum officinale), with soft tongue- shaped leaves, and an offensive odor. It bears nutlets covered with barbed or hooked prickles. Called also dog's-tongue.

aromatic and edible spindle-shaped root of the cultivated form of the Pastinaca sativa, a biennial umbelliferous plant which is very poisonous in its wild state; also, the plant itself. Cow parsnip. See Cow parsnip. -- Meadow parsnip, the European cow parsnip. -- Poison parsnip, the wild stock of the parsnip. -- Wat…

Any plant of the genus Primula. Evening primrose, an erect biennial herb (Enothera biennis), with yellow vespertine flowers, common in the United States. The name is sometimes extended to other species of the same genus. -- Primrose peerless, the two-flowered Narcissus (N. biflorus). [Obs.]

Quakers, hold to the doctrine, of nonresistance. -- Quaker ladies (Bot.), a low American biennial plant (Houstonia cærulea), with pretty four-lobed corollas which are pale blue with a yellowish center; -- also called bluets, and little innocents.

A biennial umbelliferous plant (Apium graveolens) native of the seacoats of Europe and Asia. When deprived of its acrid and even poisonous properties by cultivation, it becomes celery.

ns, a large mouth, and very long, sharp teeth. -- Viper's bugloss (Bot.), a rough-leaved biennial herb (Echium vulgare) having showy purplish blue flowers. It is sometimes cultivated, but has become a pestilent weed in fields from New York to Virginia. Also called blue weed. -- Viper's grass (Bot.), a perennial compo…