. Introduction to botany. Botany. i6 Introduction to Botany. monoecious, or dioecious, and of several 2-ranked bracts or glumes. Stamens commonly 3, and styles usually 2, but varying from i to 3. Ovary i-celled and i-ovuled. Fruit a seedlike grain. See Fig. 341 for a diagrammatic representation of the struc- ture of the I. POA. Meadow-Grass. Grass. Spear Diagrams of a typical grass flower, i, a spike- let dissected; a a, empty glumes; d b, fertile glumes bearing flowers {c c) in their axils; d, a glume bearing the sterile flower (e) in its axil; /, the palet. ^i, a cross diagram of th
. Introduction to botany. Botany. i6 Introduction to Botany. monoecious, or dioecious, and of several 2-ranked bracts or glumes. Stamens commonly 3, and styles usually 2, but varying from i to 3. Ovary i-celled and i-ovuled. Fruit a seedlike grain. See Fig. 341 for a diagrammatic representation of the struc- ture of the I. POA. Meadow-Grass. Grass. Spear Diagrams of a typical grass flower, i, a spike- let dissected; a a, empty glumes; d b, fertile glumes bearing flowers {c c) in their axils; d, a glume bearing the sterile flower (e) in its axil; /, the palet. ^i, a cross diagram of the same spikelet lettered as above ;^^, lodi- cules. 3, a single flower; /, palet; ^, lodi- cule. — In part after Prantl. (Greek name for grass or fodder.) Annuals or perennials, leaves flat or convolute. Spikelets flattened, ovate, or lance-ovate, 2-6-flowered, in more or less open panicles. Flowers usually perfect, rarely dioecious. The two lower glumes empty, 1-3-nerved; the glumes next the flower longer, and usually with cob- webby hairs at the base, 5- nerved; palets (see Fig. 341) shorter than the glumes, and 2-nerved or 2-keeled. Poa pratensis, L. (L., fra- tejisis, growing in meadows, firom fratum, a meadow.) KENTUCKY Blue Grass. Smooth, slender stems springing from runningroot- stocks; sheaths sometimes longer than the intemodes; ligules short and blunt; spikelets nearly sessile, 3-5-flowered; upper glumes hairy on the margins and keel. Commonly planted for lawns, meadows, etc. II. TRIPSACUM. Gama Grass. Sesame Grass. (Or., tribo, to rub, in allusion to the polished spikes.) Stems solid, stout and tall, from thick, creeping rootstocks. Leaves broad and flat. Monoecious spikelets in jointed unilateral spikes; staminate spikelets in the upper part of the spike, and the pistillate below; staminate spikelets in pairs, 2-flowered; pistillate spikelets with i perfect Please note that these images are extracted from scanned page images that may have been digitally e
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