290 North American CyperaceiF. 
1, p. 150; Lestib. ess. jam, Cyp, p, 44, no. 59; N. ah Esenb^ 
in Wight's contrih, pp. 70 & 93, Sf in Linn<m, 9, p. 288 ; 
Michx.jl. 1. p. 37 ; Nutt. gau 1. p. 37. 
Vaginaria, Rich, in Pers. sijn. 1. p. 70; Nutt. gen. 1. p. 37, 
1, FUIRENA SQUARROSA, Michx, 
Culm obtusely 3-angled, sulcate; leaves ciliate; sheaths 
hairy ; spikes clustered (3 — 6 — 12,), ovate ; awn as long as 
the scale; petals cordate or ovate. 
a. Nut twice the length of its stipe; bristles shorter than 
the claws of the petals, nearly smooth. 
F. squarrosa, Michx.fi. p. 37; Vahl, enum. 2. p. 286; Pursh,fl. 1. p. 
58 ; Elliott, sk. 1. p. 53. t. 2. f. 1 ; MuhL ! gram. p. 50, (in part) ; Torr. ; 
fi.l. p. 67; Clayt.fi. Virg. 173; Curt.! cat.pl. Wilmingt. no. 56; 
Re£7n. Sf Schult. syst. 2. p, 234; Spreng. syst. 1. p. 236. 
Culm 1 — 2 feet high, leafy. Leaves 6 inches long, 2 — 4 lines broad, 
flat, pubescent on both sides and distinctly ciliate on the margin ; upper 
ones sraoothish; sheathes sulcate. Ligula membranaceous, brown, 
ciliate. Umbels simple or compound, one or two, supported on pedun- 
cles which grow from the upper sheaths ; the terminal one 2 — 3-rayed, 
and cojnposed of 6^20 spikes, subtended by an involucre of 2 or 3 very 
short narrow leaves. Spikes half an inch in length, ovate -oblong, 
closely aggregated into heads at the summit of the short rays. Scales 
ovate, hairy, obtuse or emarginate, marked with three strong approxi- 
mated ribs, which uniting towards the summit, form the (upwardly 
scabrous) awn, Bristles of the perianth, (calyx), shorter than the claw 
of the petals, flat, incurved, nearly smooth. Petals with claws longer 
than the lamina, mucronate, but not awned ; lamina of a spongy texture 
throughout, the breadth nearly equal to the length. Style deeply 3-cleft; 
the segments glandularly pubescent. Nut very acutely and equally 
triangular, with flat sides, distinctly pedicellate. 
Hab. Swamps ; North Carolina to Florida. Wilmington, 
N. C, Air. Curtis!; South Carolina, Elliott; Georgia, Lc 
Confe and Dr. Baldwin! ; Alabama, Dr. Gates!; New Or- 
leans, T. Driimmond ! 
