Grasses

flower, stem, stamens, branches, palets, pistil and glumes

Page: 1 2 3

Annual—Living through one season only.

Anther—The upper part of the stamen containing the pollen or fertilizing Awn—A bristle-like process pro eeding from or attached to the glumes or palets of some grasses. Biennial—Living through two seasons. Boat-shaped—Concave within and convex without, as the and palets of some flowers.

stiff hairs.

Bulbous—The base of the stem thickened so as to make a hard, roundish mass, as in Timothy grass (P)tleum pratense).

Ccespitose—Growing in batches or tufts. Cau/ine—Relating to or growing from the stem or culm. Ciliate—Having the margin fringed with hairs.

Cu/m—The stem or straw of a grass; when the stem creeps upon or under the ground it is called a rhizoma.

Deconbent—Leaning on the ground at the lower part but. rising at the top.

Digitate—Branching finger-like from a common center, as the spikes of Crab-grass Panicum sanguinale). Dicecious—The two sexes separated and growing on differ ent plants, as in Buffalo grass (Buch/oe daotyloides). Entire—Without notches on the margin. Exserted—Protruded beyond the flower, as the stamens of grasses usually are when in bloom. Fertile—Producing fruit.

Fibrous—Composed of thread-like fibers, as the roots of most grasses.

.Floret—A little flower; apair of palets with the inclosed stamens and pistil. There may be many of these in a 'spikelet.

Glabrous—Smooth; destitute of hairs or roughness. Gluntes—The outer or lower pair of bracts or scales in a spikelet, and inclo-ing one or more, sometimes many, flowers or florets.

Hirsute Rough-hab ed, bearded.

Indigenous—Growing naturally in a country. Internode—The space between the nodes or joints. Keel—A sharp"ridge along the middle of a glume or palet resembling the keel of a boat.

Lamina or Blade—The extended part of a leaf, generally open and flat, but sometimes rolled inward longitudi nally, when it is said to be involute.

Ligule—A small leaf-like appendage,' usually thin and semi-transparent (membranaceons), found at the lower part of the leaf or at the top of the sheath. It is said to be entire when there are no divisions in its outliner; bifid, when it is divided at the apex into two parts; lacerated, when it is cat or divided on the margin; truncated, when the upper part terminates abruptly in a transverse line, as if cut off.

illembranaceo )8 —Thin and translucent. like a membrane.

'Nerves- Rib-like elevations on the leaves, glumes, and palets.

Neutral flower—One baying neither stamens nor pistil. Nodes—Knots in the culm where the leaves are given off. oblong—Longer than wide, with the sides nearly parallel. Obtuse—Blunt pointed.

Ovary—The portion of a flower containing the ovules or seeds.

Palet or Palea—The inner scales or bracts incloeing the stamens and pistil.

Panicle—The flowering part of the stem or calm of grasses, usually composed of a number of series or whorls of branches or rays, which are again divided into secondary branches. These may be short and close to the stein, r they may be long and spreading.

P erenniai —Living for more than to o years; indefinitely. Pistil—The central organ of a fe tile flower, usuady con-' • slating of an style, and stigma.

.Pollen— The fertilizing powder contained in the anthers. P&beseent—Covered with soft hairs.

Rocha —The name given to that kind of flowering branch where the flowers are arranged closely together on its sides without stalks or pedicels, as io Paspalum, and in the ultimate branches of the panicle.

Radial leaves—Those growing from the ropt.

Spikelet—The ultimate divisions of the panicles or flower heads; they may be one-flowered. that is, a pair of glumes enveloping a single flower of a pair of palets (or sometimes One palet) with the inclosed stamens and pistil; or they may be two or more flowered, there being but one pair of glumes to each spikelet, whether it he one or many flowered.

Sheath—That part of the leaf which clasps the stem; it answers to thepetiole or leaf-stalk.

Spike—When the flowers are sessile or without branches, as in Timothy grass (P hleum protease).

Stamens —The organs of the flower which contain the pol len, consisting of the filament and the anthers. Stigma—The extremity of the pistil which receives the po len.

Whorl—A. number of leaves or branches starting from one line on the stem.

Page: 1 2 3