ST eRe REO eT a RSET ee Ste aeons Deiat 
Te 
Scirpus. | CYPERACEA. 1159 
large, compound corymbs of many solitary spikelets; bristles 
usually 6, sometimes small or obsolete :— 
Bristles 6 or fewer, scabrid or setose with short unicellular hairs 
grossus. 
*44 
Bristles always 6, villous or subplumose J 
hairs grossus var. oe 
i 
Nut transversely wavy; plants with stems never in 
2'5 feet, and with spikelets clustered in a single, sherk, ees 
head, sais (S. supinus var. uninodis) in umbels with few short 
rays: 
Boats terete 
ae stint keeled and spikelets angular; nut tri- 
quetrou ristles 0 :— 
Spike ie 7-1, in a single lateral head; stems 2-12 in. 
supinus. 
eam umbellate, on 3-1 rays, — an inch long; 
tems 4-12 in pinus var. uninodis. 
24 
Prac faintly or not — and sta tere 
Nut plano-convex ; bristles 6-5, rarely 0; ale mPa 
2-fid ; glumes ovate, concave, incurved ; stem 
ia 
Nut ideo ; bristles 0; style always 3-fid :— 
pongy, tran Are septate when dry; 
ue slightly keeled, not in in fruit ...articulatus. 
dium or slender oa silts glumes many- 
d, broad, inflated in fruit ............. quinquefarius. 
dared “riquctou ; bristles ee: spikelets terete; nut tri- 
uetr mucronatus. 
“Style 2- fa: bristles always present ; nut smooth ; ais notched 
at top; stems trigonous :—[p. 1158] 
Spikelets capitate, 3-1, large (about an inch long), ovoid-lanceo- 
late ; bristles 4, scabrous, not plumose ..... smaritimus var. affinis. 
Spikelets umbellate, mostly solitary, on the ultimate rays of the 
lateral umbel, never exceeding *6 in. long 
mea 3, sometimes 2, rigid, sab with short, white, 
exed teeth, not plumose queter var. segregata. 
Prise usually 4 or more, ligulate, — eae 'y ; plumose by 
preading, moniliform hairs littoralis. 
2487. Scrrpus curtnensts Munro; F. B. I. vi. 662. 
hittago 
A tall, plaliediei club-rush ; stems 2-7 fede high. 
