. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. CYPEEACEAE (SEDGE FAMILY) 199 14. RYNCh6SP0RA Vahl. Beak Rush Spikelets panioled or variously clustered, ovate, globular, or spindle-shaped, terete, or sometimes flattish ; but the scales open or barely concave (not boat- shaped nor keeled) ; the lower commonly loosely imbricated and empty, the uppermost often subtending imperfect flowers. Perianth of bristles. Stamens mostly 3. Achene lenticular, globular, or flat, crowned witl^ a conspicuous t
. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. CYPEEACEAE (SEDGE FAMILY) 199 14. RYNCh6SP0RA Vahl. Beak Rush Spikelets panioled or variously clustered, ovate, globular, or spindle-shaped, terete, or sometimes flattish ; but the scales open or barely concave (not boat- shaped nor keeled) ; the lower commonly loosely imbricated and empty, the uppermost often subtending imperfect flowers. Perianth of bristles. Stamens mostly 3. Achene lenticular, globular, or flat, crowned witl^ a conspicuous tubercle or beak consisting of the persistent indurated base or even of the greater part of the style. â Chiefly perennials, with more or less triangular and leafy culms; the spikelets in terminal and axillary clusters ; flowering in summer. (Name composed of ^iyx°^< * snout, and <riropd, a seed, from the beaked achene.) § 1. Spikelets lanceolate, acuminate, in fruit flattish, cymose-panicled, of only one perfect and 1-4 staminate flowers ; scales few ; bristles rigid, minutely scabrous 'upward; style simple or barely 2-toothed, filiform and gradually thickened downward, in fruit persistent as an exserted slender awl-shaped upwardly roughened beak, several times longer than the smooth flat obovate achene ; coarse perennials ; spikelets in flower , in fruit (in- cluding the projecting beak) 2-3 cm. long. * 1. R. corniculkta (Lam.) Gray. â,o â ⢠, , y-TT Tt * T,'i 813. R. coriiiculata. (Horned Rush.) Culm m. high; leaves cm. wide ; cymes decompound, diffuse; bristles awl-shaped, stout, unequal, shorter than the achene. â Wet places on the coastal plain, Del. and Pa. to Ela. and Tex., locally northw. in the Miss. Basin to Mo., Ind., and June-Sept. Fig. 313. 2. R. macrostacTiya Torr. Erect and rather stiff; the glomerules mostly of 10-50 spikelets, strongly ascending, sessile or on feic short rays; bristles capillary, twice the lengt
Size: 1126px × 2220px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectbotany
