. 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. 12. Panicum amarum Ell. Smaller Sea- beach Grass. Fig. 322. Panicum amarum Ell. Bot. S. C. & Ga. 1: 121. 1817. Panicum amarum var. minor Vasey & Scribn. Bull. U, S. Dep. Agr. Bot. 8: 38. 1889. Panicum amaroides Scribn. Aqt. Agrost. 2g : 5. 1901. Merr. Circ. U. S. Dep. Glaucous and glabrous. Culms scattered, ii°-3° tall, from a stout creeping rootstock;
. 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. 12. Panicum amarum Ell. Smaller Sea- beach Grass. Fig. 322. Panicum amarum Ell. Bot. S. C. & Ga. 1: 121. 1817. Panicum amarum var. minor Vasey & Scribn. Bull. U, S. Dep. Agr. Bot. 8: 38. 1889. Panicum amaroides Scribn. Aqt. Agrost. 2g : 5. 1901. Merr. Circ. U. S. Dep. Glaucous and glabrous. Culms scattered, ii°-3° tall, from a stout creeping rootstock; leaves thick and firm; sheaths overlapping; blades up to 1° long, 3"-S" wide, flat, or involute toward the apex; panicle 6'-i4° long, contracted, narrow, the short branches appressed; spikelets 2i"-3" long, commonly broad and stout, the first scale more than J as long as the spikelet to nearly equalling it, the second and third scales about equal, all acute. In sands along the coast, Connecticut and Long Island to Florida and Mississippi. 13. Panicum virgatum L. Switch-grass. Wild Red-top. Fig. 323. Panicum virgatum L. Sp. PI. S9> 1753- P. virgatum var. cubense Griseb. Cat. PI. Cub. 233. 1866. Panicum virgatum var. obtusum Wood, Am. Bot. & Fl. 392. 1870. Panicum virgatum var. breviramosum Nash, Bull. Torr. Club 23: 150. 1896. Culms erect from a creeping rootstock, 3°-6° tall, glabrous. Sheaths smooth and glabrous; blades elon- gated, i° or more long, 3"-6" wide, flat, long-acumi- nate, narrowed toward the base, glabrous, rough on the margins; panicle 6'-2o' long, the lower branches 4'-io' long, rarely shorter, spreading or ascending; spikelets ovate, acute to acuminate, li"-2l" long; first scale acuminate, about one-half as long as the spikelet, 3-5-nerved ; second scale generally longer than the others, 5-7-nerved, the third similar and usually subtending a palet and staminate flower; fourth scale shining, shorter
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
