Big SOULE RINAIGALTE OLIN IAA CAEN AO TS GIT2 iN GrEES) 
dm. tall; leaves flat, 4-5 mm. wide, shorter than the culms; 
staminate spikes 1-3, contiguous, the lower sessile; pistiilate 
spikes 2-3, on short peduncles, 2-3 em. long, 5 mm. thick; scales 
shorter than the perigynia, lanceolate, acute or mucronulate; 
perigynia ovoid or obovoid, nerved; achenes ovoid. 
Bear Valley, 7,000 ft. alt., in the San Bernardino Mts.; 1578, 
3280 Parish. Other immature specimens from the higher 
mountains, probably belong here. 
5. SCIRPUS, Linn. S. Pl. 47—Bulrush. 
Annual or perennial herbs with leafy culms, or the leaves 
reduced to basal sheaths. Spikelets terete, or obscurely flat- 
tened, solitary capitate, spikate or umbellate, the florescence 
subtended by a l1-several leaved involucre, or non-involucrate. 
Seales spirally imbricated all around, usually all fertile, or 
1-3 lower ones empty. Perianth of 1-6 bristles, or in some 
species none; stamens, 2-3; style 2-3-cleft, not enlarged at 
the base, wholly deciduous, or the base persistent as a subu- 
late tip to the achene.Achene 3-angled, lenticular, or plano- 
convex. 
A genus of some 200 widely distributed species. 
KEY TO THE SPECIES. 
Spikelet solitary. 
Involucre wanting. 
sAvamalle- 2" o FCs dalllseeanee ee ae a eee to ee 1. S. nanus 
Rexemaral eal lo mematalilge ee ee ee 2. S. paucifior 
Involueral leaf promptly deciduous..........3. S. cernuus 
Spikelets normally more than one; involucre persistent. 
Culms 3-angled. 
Principal involueral leaf pungent. 
Leaves 2-6, long and narrow......... 4. §. Americanus 
eawesn=2aasorts amc Oa ders ees ee 5. S. Olneyi 
Involucral leaves all foliaceous. 
Spikelets large, few, in a short-rayed umbel... 6. S. Pacificus 
Spikelets small, many, in a decompound umbel.......... 
Aa TEEN 1 ain ee ga RR cn aera 7. S. microcarpus 
Culms, terete, sheathed at base, tail. 
Umbel of a few short rays; bristles barbed.8. S. lacustris 
Umbel decompound, long-rayed; bristles piumose.... 
PNET ee. Ba om tects 1 oar See eR A EH Oe i i At 9. §. Tatora 
* Spikelet solitary, terminal; stamens 3; style 3-clet; achenes 
j-angled, culms low, tufted. 
1. Scirpus nanus, Spreng. Pug. 1:4. Britton, Trans. N. Y. 
Aead. 11:74. Britt. & Br. Ill Fl. 1:262. Eleocharis pygmaea, 
Torr. Ann. N. Y. Liye. 3:315. Watson, Bot, Cal. 2:221. 
