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A cavity in the cellular tissue of plants, containing air only.

A chamber or cavity filled with air, in an animal or plant.

, cell, duct, or tube containing or conducting air; as the air vessels of insects, birds, plants, etc.; the air vessel of a pump, engine, etc. For the latter, see Air chamber. The air vessels of insects are called tracheæ, of plants spiral vessels.

iris. The term is also used of the lower animals, as white mice, elephants, etc.; and of plants in a whitish condition from the absence of chlorophyll. Amer. Cyc.

Nourishing matter stored up within the integuments of the seed in many plants, but not incorporated in the embryo. It is the floury part in corn, wheat, and like grains, the oily part in poppy seeds, the fleshy part in the cocoanut, etc.

rum of blood, and is found in other animal substances, both fluid and solid, also in many plants. It is soluble in water is coagulated by heat ad by certain chemical reagents. Acid albumin, a modification of albumin produced by the action of dilute acids. It is not coagulated by heat. -- Alkali albumin, albumin as mod…

An alcoholic tincture prepared with fresh plants. New Eng. Dict.

The plant costmary, which was formerly much used for flavoring ale.

A plant (Macrochloa tenacissima) of North Africa; also, its fiber, used in paper making.

A kind of seaweed; pl. the class of cellular cryptogamic plants which includes the black, red, and green seaweeds, as kelp, dulse, sea lettuce, also marine and fresh water confervæ, etc.

living; being in a state in which the organs perform their functions; as, an animal or a plant which is alive.

ic base, especially one of a class of substances occurring ready formed in the tissues of plants and the bodies of animals.

The similar plant Anchusa officinalis; bugloss; also, the American puccoon.

An herbaceous plant of the nightshade family (Physalis alkekengi) and its fruit, which is a well flavored berry, the size of a cherry, loosely inclosed in a enlarged leafy calyx; -- also called winter cherry, ground cherry, and strawberry tomato. D. C. Eaton.

A name popularly given to the officinal valerian, and to some other plants.

A genus of plants, including the onion, garlic, leek, chive, etc.

Fertilization of the pistil of a plant by pollen from another of the same species; cross-fertilization.

A genus of succulent plants, some classed as trees, others as shrubs, but the greater number having the habit and appearance of evergreen herbaceous plants; from some of which are prepared articles for medicine and the arts. They are natives of warm countries.

Of or pertaining to the Alps, or to any lofty mountain; as, Alpine snows; Alpine plants.

A genus of plants of the Mallow family. It includes the officinal marsh mallow, and the garden hollyhocks.