Galea, a helmet-shaped piece of a perianth, as the upper lip of some labiate corollas.

Gamopetalous, having the petals united together. Gamophyllons, having the pieces of the perianth united. Gibbous, bulging outward on one side. Glabrate, somewhat glabrous; becoming glabrous. Glabrous, smooth. Gland, a secreting structure of any kind. Any protuberance having . the appearance of such an organ.

Glandular, bearing glands; or gland-like. Glaucous, whitened with a bloom. Globose, nearly spherical. Glumaceous, having glumes; or glume-like. Glume, a chaffy bract near a grass-flower. Granular, composed of small grain-like pieces. Gymnospermous, having seeds which are not enclosed in an ovary.

Gynandrous, of stamens which are borne on the style.


Habit, the general aspect of a plant.

Halberd-shaped, with spreading lobes at the base.

Hastate, the same as halberd-shaped.

Head, a dense cluster of sessile flowers on a very short axis.

Heart-shaped, with an indentation at the base.

Herb, a plant with little or no wood in its stem.

Herbaceous, having the character of an herb; leaf-like in colour and texture. Hilum, the scar showing where a seed was attached. Hirsute, pubescent with coarse hairs. Hispid, with stiff bristly hairs. Hoary, grayish-white with fine close pubescence. Hooded, shaped like a hood.

Hypogynous, inserted on the receptacle below the ovary, and free from the latter.


Imbricate, overlapping, as the bracts of the involucre in most composite flowers, having one piece wholly internal and one wholly external, as in the calyx and corolla of many flowers.

Immersed, wholly under water.

Incised, sharply cut.

Included, not at all protruded beyond the surrounding envelope.

Indefinite, many in number.

Indehiscent, not splitting open so as to discharge the contents. Indigenous, native. Inferior, lower; outer; of a calyx when below and free from the ovary; of an ovary when attached to the calyx.

Inflorescence, the arrangement of the flower's or flower-clusters.

Inserted, attached to. Introrse, turned inward. Involucel, a secondary involucre. Involucre, a circle of bracts below a flower or flower-cluster.

Involute, rolled inward.

Irregular, with parts differing in size or shape.


Keel, a central longitudinal ridge; the two united petals in the front of a papilionaceous flower.

Kidney-shaped, of a leaf with large rounded lobes at the base.


Labiate, having two lips. Laciniate, cut into narrow pointed lobes. Lamella, a thin flat plate. Lanceolate, rather narrow and tapering from the base to the point. Lateral, referring to or borne on the side.

Lax, loose.

Leaflet, one of the pieces of the blade of a compound leaf.

Legume, a dehiscent fruit of a single carpel, which opens as a rule by two seams.

Lenticular, shaped like a double-convex lens.

Ligulate, strap-shaped. Limb, the spreading part of a petal or corolla, etc.

Linear, long and narrow, with both ends alike or nearly so. Lobe, any segment of an organ.

Lyrate, pinnatifid with the terminal lobe very large and rounded.