CYPERACEAE 157 
somewhat involute in age, ciliate, often de oria involuere rather small: 
-o d p bic cylindric, 8-14 mm. long, chestnut-colored: 
s 3.54 m ong, ronate, puberulent: sche narrowly obovoid or 
ellineoid. bog a LB 5 mm. long, pale.—Sand-dunes, beaches, and swamps, 
Coastal Plain, Fla. to Miss. and Ga. 
4. F. castanea (Michx.) Vahl. dig up to 1 m. tall, deep-green: leaf- 
blades involute, d glabrous: nvolucre small: spikelets eons or 
ovoid-ellipsoid, 6—10 long, br ei seales 3.5—4.5 s ng, obtuse or 
acutish, glabrous: E obovoid or e dae about 15. mm ong, 
bro 
Salt m d marshes, and low pinelands, various oe except ea 
lachian, Fla. to Tex., Nebr., Mich., and N. Y.—(W. I.) 
: = rue Boeckl. Perennial, up to 9 dm. tall, bright- e EE pecia 
involute, ipe often pubescent: involuere ineonspieuous: spik 
me Mipsoia. ovoid, often w, 9-13 mm. long, pale-br dp he: 3.54 ii 
long, obtuse or a ne a. mm Ke less n 1.5 mm. long, 
bro [F. Drummond (Torr. & Hook.) Bocckl.] Low loui Coastal 
Plain, Miss. to Tex. 
6. F. iia s Vahl. Perennial, 1-6 dm. tall, mn noe ype 
very n involute, at least in age: involucre with o of t 
bracts ae du spikelets ellipsoid to ovoid-ellipso jid, 5- lm . lo Rs 
pale: seales about 2.5 mm. long, mueronate, glabrous: achene broadly Coa 
about 1 mm. long, pale, uo oor ribbed, the ribs smooth or nearly so 
ae lise bus led. [F. laxa Vahl.]—River-banks, low grounds, fields, 
swamps, and waste-places, x. Plain, Fla. to Tex. and Ga. Nat. of trop. 
4 Mez., C. A., S. A., O. W.) 
7. F. Baldwiniana (Schult.) Torr. Annual, 1—4 dm. tall, glabrous or spar- 
ingly pubescent: leaf-blades very narrow, flat or nearly so: involucre of 3-5 
mm 
S nm. lon g 
broadly obovoid, fully 1 mm. long, pale, longitudinal ribbed, the ribs 
tubercled.—Low wet to dryish grounds, Coastal Plain and adj. provinces, Fla. 
to Tex., Mo., and Pa. id .1.)—Formerly included in "the next cea ae species. 
8. F. Vahlii (Lam.) L per F dm. tall: leaf-blades setaceous or 
filiform, scabrous: eu va slender: pris of several setaceous 
elongate bracts: spikelets ellipsoid- cylindric, 4-8 mm. long, obtuse, greenish- 
ied ide 1.5-2 mm. long, acuminate, the tip eie aehene obovoid, about 
0. ong, ye ellowish- white. —River- banks and low gro oad Coastal an 
and E provinees, Fla. to Tex., Mo., and N. Mex.) 
9. F. pe it dapat Harper. Annual, 3 em. tall: leaf-blades Mrd smooth or 
nearly s eapes setaceous, in small prostrate radiatin S: involu uere of 
several slender setaceous ab. ri the inflorescence: "spike elets p 
1-2 mm. in n eter, gre yello on pedun up t mm. 
scales LL. om pees subulate tipped, e tip iode P Bc. po b. 
soid-cylindrie, about 0.5 mm. long, pa Pape ponds, near Leslie, on the 
Coastal Plain of Ga.—Fall.—Collected only o 
10. F. 
short branches: spikele = ovoid | or oval, 2-5 mm. long, obtuse reddish-bro 
seales lanceolate, muero achene obovoid, fully 0.5 long, distinc Pd. 
reticulate. [F. Frankü "Steud | —Sandy fields, bottoms, — shores, various 
provinees, Ga t0 La. Ont., and Que. 
11. F. autumnalis (L.) R. and S. Annual, 1—4 dm. tall: umbels usually with 
long branches: spikelets ed ellipsoid p lanceolate, 6-10 mm. long, acute, 
