_Fleshy._ Succulent; juicy.

_Flower._ An axis bearing stamens or pistils or both (calyx and corolla usually accompany these).

_Fluted._ With rounded ridges.

_Fruit._ The part of a plant which bears the seed.

_Germinate._ To sprout, as of a seed.

_Gibbous._ Swollen on one side.

_Glabrous._ Neither rough, p.u.b.escent, nor hairy; smooth.

_Gland._ Secreting surface or structure; a protuberance having the appearance of such an organ.

_Glandular._ Bearing glands.

_Glaucous._ Covered or whitened with a bloom.

_Globose._ Spherical or nearly so.

_Globular._ Nearly globose.

_Gregarious._ Growing in groups or colonies.

_Habit._ The general appearance of a plant, best seen from a distance.

_Habitat._ The place where a plant naturally grows, as in water, clay soil, marsh, etc.

_Hairy._ With long hairs.

_Halberd-shaped._ Like an arrow-head, but with the basal lobes pointing outward nearly at right angles. Page XII.

_Heartwood._ The dead central portion of the trunk or large branch of a tree.

_Hirsute._ Covered with rather coa.r.s.e or stiff hairs.

_h.o.a.ry._ Gray-white with a fine, close p.u.b.escence.

_h.o.m.ogeneous._ Uniform; composed of similar parts or elements.

_Hybrid._ A cross between two nearly related species, formed by the action of the pollen of one upon the pistil of the other, yielding an intermediate form.

_Imbricate._ Overlapping, like the shingles on a roof.

_Indehiscent._ Not opening by valves or slits; remaining persistently closed.

_Indigenous._ Native and original to a region.

_Inflorescence._ The flowering part of a plant, and especially its arrangement.

_Internode._ The portion of a stem between two nodes.

_Involucral._ Pertaining to an involucre.

_Involucre._ A circle of bracts surrounding a flower or cl.u.s.ter of flowers.

_Keeled._ With a central ridge like the keel of a boat.

_Laciniate._ Cut into narrow, pointed lobes.

_Lanceolate._ Lance-shaped, broadest above the base and tapering to the apex, but several times longer than wide. Page xii.

_Lateral._ Situated on the side of a branch.

_Leaf._ The green expansions borne by the branches of a tree, consisting of a blade with or without a petiole.

_Leaflet._ One of the small blades of a compound leaf.

_Leaf-scar._ The scar left on a twig by the falling of a leaf. Page XVI.

_Legume._ A pod-like fruit composed of a solitary carpel and usually splitting open by both sutures (_Leguminosae_).

_Lenticels._ Corky growths on young bark which admit air to the interior of a twig or branch.

_Linear._ Long and narrow, with parallel edges (as pine needles). Page XII.

_Lobe._ Any division of an organ, especially if rounded.

_Lobed._ Provided with a lobe or lobes. Page XIII.

_l.u.s.trous._ Glossy; shining.

_Membranaceous._ Thin and somewhat translucent.

_Midrib._ The central vein of a leaf or leaflet.

_Monoecious._ Unis.e.xual, with staminate and pistillate flowers on the same individual.

_Mucilaginous._ Slimy; resembling or secreting mucilage or gum.

_Mucronate._ Tipped with a small, abrupt point. Page XII.