358 CYPERACEAE. 
198. Carex straminea Willd. Straw Sedge. (Fig. 868.) 
Carex straminea Willd.; Schk. Riedgr. 49. (34. 1801. 
Culms very slender, roughish above, 1°-214° long, the 
top commonly nodding or recurved. Leaves 1/’ wide or 
less, long-pointed, shorter than the culm; bracts short or 
the lower bristle-form and exceeding its spike; spikes 3- 
8, subglobose or slightly obovoid, 2/’-214’ thick, yellow- 
ish brown or greenish, separated on the commonly zigzag 
rachis, or contiguous; staminate flowers basal; perigynia 
spreading or ascending, ovate, brown, about 114’’ long, 
rather more than 1%4’’ wide, strongly several-nerved on 
the outer face, fewer-nerved on the inner, wing-margined, 
the tapering rough 2-toothed beak about as long as the 
body; scales lanceolate, acute, about equalling the peri- 
| gynia, but narrower; stigmas 2. 
In dry fields, New Brunswick to Manitoba, Pennsylvania, 
Michigan, and probably farther south. June-July. 
Carex straminea mirabilis (Dewey) Tuckerm. Enum. Meth. 
: 18. 1843. 
Carex mirabilis Dewey, Am. Journ, Sci. 30: 63. 1836. 
Larger, culm slender, 2°-5° long; leaves 1''-2%'’ wide; spikes larger, 3''-4'' thick, rather 
greener; perigynia spreading, narrower, longer than the scales. Range of the type, extending 
south to North Carolina and Missouri. Perhaps better regarded as a distinct species. 
199. Carex silicea Olney. Sea-beach Sedge. 
(Fig. 869.) 
Carex silicea Olney, Proc. Am. Acad. 7: 393. 1868. 
C. straminea var, moniliformis Tuckerm, Enum. Meth. 17. 
1843. Not C. scoparia var. moniliformis Tuckerm. 1843. 
Carex foenea var, sabulonum A, Gray, Man, Ed. 5, 580. 1867. 
Not C. sabulosa Turcz. 1837. 
Culms slender, rather stiff, erect but the summit re- 
curved or nodding, roughish above, 1°-2%° tall. Leaves 
1/’ wide or rather less, involute in drying, shorter than 
the culm; bracts always very short; spikes 5-8, ovoid-conic 
or ovoid-oblong, silvery-green, nearly white or becoming 
brownish, erect, conspicuously contracted and staminate 
at the base, 4/’-6’’ long, about 214’ thick, all separated 
or the uppermost close together; perigynia ovate-oval, 
short-beaked, finely nerved on both faces, wing-mar- 
gined, appressed, about 2’’ long, more than 1/’ wide, 
longer and broader than the lanceolate scales; stigmas 2. 
In sands of the sea coast, Nova Scotia to New Jersey. June-Aug. 
200. Carex ténera Dewey. Marsh Straw Sedge. (Fig. 870.) 
Carex tenera Dewey, Am. Journ. Sci. 8:97. 7.9. 1824. 
C. straminea var. aperta Boott, Ill. 120. pl. 385. 1862. 
C. straminea var, tenera Bailey, Bot. Gaz. 10: 381. 1885- 
Culm very slender, erect or the summit nodding, 
roughish above 1°-2° high. Leaves shorter than the 
culm, usually less than 1’ wide, tapering to a very 
long point; bracts usually short or wanting, some- 
times bristle-form; spikes 4-6, oval, obtuse, densely 
many-flowered, separated or the upper contiguous, 
greenish-brown, 4’’—5’’ long, staminate and commonly 
much contracted at the base; perigynia ovate to ovate- 
lanceolate, ascending, appressed, strongly several- 
nerved on both faces, wing-margined, the tapering 
rough beak more than half as long as the body; scales 
lanceolate, about as long as the perigynia, but much 
narrower; stigmas 2. 
In wet soil, common along brackish marshes, Maine 
and Ontario to Virginia and Louisiana. May-June. 
Carex tenera invisa (W. Boott) Britton. 
Carex straminea var. invisa W. Boott, Coult. Bot. Gaz. 9: 86. 1884. 
Spikes smaller, subglobose or short-oblong, not more than 3'’ thick, the lower one usually sub- 
tended by a filiform bract %’-3!s' long. Maine to Delaware. 
