356 OXLI. CYPERACER. [Schonus. 
Panicle or cluster short and dense. Stems rushlike. 
mony ah aths at the base only with very short 
Leaf-sheaths boarded at the orifice. Spikelets few, 5 to 6 
es long. Hypogynous bristles present . 97. S. pedicellatus. 
Teaf sheath inn Spikelets numerous, 4 to 5 lines 
pogynous bristles 38. SS. fascicularis. 
Leaf-sheaths Mee heated, Spikelets numerous, ‘about 
5 lines. No hypogynous brist . 89. S. brevifolius. 
Panicle loose but narrow. a i bearded, wit li short 
Moe ate points. Hypogynous bristles none or fine 
No o leni cbeaths between the basal and floral ones. Spike- 
— ck, flat, 3 to 4 lines, Nut granular, me 
0. S. melanostachyus. 
aaah few on the stem, with short ‘subulate: points, 
ts brown, ew scarcely flattened, 4 line 
N, Sea ooth Y . . 41, S. sparteus. 
Leaf. ahhh several, distant, with linear lamin 
Spikelets brown, sadly flattened, about r 
Tw 42, S. vaginatus. 
Panicle loose and much branched wi ith v very numerous 
spikelets. Stem leafy, thol lear Saves very long. No 
rm ogynous bristles 
"El nearly 2 lines broad at the base, tapering into NE 
points. Spikelets 4 to 6 lines . 43, S. folca 
Leaves subulate from the base. Spikelets 2 To uc A, ee disse. 
Lax: —Spikelets under X in. long, few on slender pedicels. Hyper 
nous bristles present. SENSOR at the base a the je e" narrow or subulate. Western 
species. » 
Stems Wow hairy in the ore art. Spikelets dark- 
bro abou 3 line long . " : 45. S. indutus. 
A ros “Spikelets black, very “flat, 4 to 5 lines 
.46 S. bifidus. 
crocarpze.— Spi ike ts ali in a termi inal — Hn or et pee 
A Micro 
umbel or clustered in the axils of distant leafy bracts. Nuts (excep 
small and white. Small or slender and weak plants with flaccid lea Dis 
Rael DAR black, i in a terminal cluster or irregular umbel, 
"wn. 
Peicudbrl bristles present. Nut smooth or rig 80. 
Eastern species . 9 . AT. S. Brownii. 
No = bristles. Nut ainooth. Eastern - à 
5. S. ericetorum., 
Ceci bristles. N t d - = 
eA sain u eeply foveolate reticu- 48, S. odontocary 
opere innt sd 2 to 3 i "lines long, ve very narrow, 
S, the lower bracts leafy. Western 
es ciliate, almost plumose . . (o .78 49. S. humilis. 
Hypogyn bicis egere rh ete and not ciliate . 50. S. seulptus. 
Spikelets 1 Til mere dst d n leaves or leafy per 
$4 TN istles present $ 51, S. axillaris. 
usually 1 or SPD b, s very narrow, one terminal 
n: — No hypogynous — 
. . 52. S. tenellus, 
pine : 58. 8. natans, 
a . 0X 0A, g umn 
