. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. GRAMINEAE. Vol. I. 40. SPOROBOLUS R. Br. Prodr. Fl. Nov. Holl. 1: 169. 1810. Perennial or rarely annual grasses, with flat or convolute leaf-blades and open or con- tracted panicles. Spikelets generally small, i-flowered, occasionally 2-3-flowered. Scales in the i-flowered spikelets 3, membranous; the 2 outer empty, the first somewhat shorter; the third scale e
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. GRAMINEAE. Vol. I. 40. SPOROBOLUS R. Br. Prodr. Fl. Nov. Holl. 1: 169. 1810. Perennial or rarely annual grasses, with flat or convolute leaf-blades and open or con- tracted panicles. Spikelets generally small, i-flowered, occasionally 2-3-flowered. Scales in the i-flowered spikelets 3, membranous; the 2 outer empty, the first somewhat shorter; the third scale equalling or longer than the empty ones; palet 2-nerved. Stamens 2-3. Styles very short, distinct. Stigmas plumose. Grain free, and often early deciduous. [Greek, referring to the deciduous grain.] About 100 species, in tropical and temperate regions, very numerous, in America. Besides the following, several others occur in the southern and western United States. Type species: Agrostis indica L. vaginae fiorus. neglectus. Panicle contracted. Annuals. Spikelets 2" long; flowering scale pubescent. 1. S1. Spikelets i54"-iJ4" long; flowering scale glabrous. 2. 5. Perennials. Plants tufted ; no rootstocks. Panicle occupying but a small part of the plant. Leaves glabrous or nearly so. Flowering scale pubescent. Palet long-acuminate, much longer than the flowering scale. 3. 5. clandestinus. Palet simply acute, about as long as the flowering scale. 4. S. canovirens. Flowering scale glabrous. Spikelets 2" long; inflorescence slender. 5. 5. Drummondii. Spikelets 254"—3" long; inflorescence stout. 6. S. asper. Leaves, at least the lower ones, papillose-hirsute. 7. 51. pilosus. Panicle occupying Yi-Yi of the plant. 8. 51. angustus. Plants with long creeping rootstocks. 9. 51. virginicus. Panicle open, its branches spreading, at least at maturity (sometimes contracted in no. 15). Annuals. Empty scales but little shorter than the flowering scale, usually pubesc
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
