308 North American Cyi^cracece. 
/S, spikes ovate-oblong ; bristles pubescent-^cabrou?, the 
pubescence spreading or pointing upward. 
Hab. Florida, Dr. Chapman ! and Dr. Baldicbif 
Obs. In this variety the sjidkes are twice as large as in the 
common E. tuberculosa, and the bristles, instead of being his- 
pid, are rather pubescent. On the upper part of the bristles, 
the pubescence is directed upward, lower down it is spreading, 
but it seldom occurs reflexed. The tubercle, also, is larger 
than the nut. Still I regard the plant as a mere variety of K. 
tuhcrculosa. 
%. 6 Spike ovate or elongated ; scales memhranaccous ; hristles 
1 — 4, slender, brittle, (rarely 0) ; 7iut roundish or trian- 
gular, smooth; style '3-cleft. — Scirpidium. 
13. Eleocharis ACicuLARis, R. Broum. 
Culm setaceous, angular and sulcate ; spike ovate, subcom- 
pressed, acute, few-flowered ; scales oblong, somewhat obtuse ; 
bristles 3 — 4, short and very slender, (sometimes 0) ; nut ob- 
long, rather acute at each end, nearly terete, many-ribbed, with 
fine transverse lines; tubercle minute, triangular, acute. 
Eleocharis acicnlaris, R. Brown^ prodr. 1. p. 224, (in obs.) ; Ram. Sf 
■Schult. syst. 2. p. 154 ; Schult. mant. 2. p. 90; Hook.fl. Land, nciv scr. 
-9. t. 49. 
Scirpus acicularis, Linn. ; Willd. sp. 1. p. 295 ; Vahl, enum. 2. p. 25; 
Pursh, fi. 1. p. 54; Torr. ! fl. 1. p. 45; Beck! hot. p. 424; Spreng. 
syst. 1. p. 204; Darlingl.jl. Ccst. cd. 2. p. 20; Gray! Gram, c^ Cyp. 
part 2, no. 133. 
S. trichodcs, MuhU! gram. p. 30; Elliolt, sk. 1. p. 76; Big.fi. BosU 
ed. 2. p. 2. 
S. capillaceus, Michx.! fi. 1. p. 30 ; Pers. syn. 1. p. 65. 
S. Chffita, Schult. mant. 2. p. 72. 
Scirpidium aciculare, N. ah Escnb. in Linneea, 9. p. ^93. 
Culm 2 — S inches long, generally very slender and hair-like. Spike 
