29G North American Ci/peracea. 
contrih. p. 98 ; Cyperus sctaceits, Retz. ; Eleochark setaccus, 
R. Brown ;*) but in that species the nut is punctato-striate, and 
there are six bristles, four of which equal the nut in length. 
B. Scales of the spikes imbricated on all sides. 
f Witk a iJerigynium, 
9. ELEOCHARIS, R. Broum. 
Scales af the spike imbricated on all sides. Bristles of 
the perigynium 3 — 12, (commonly 6,) rigid, persistent.- Style 
2 — 3 cleft ; the base bulbous anil persistent, articulated to the 
ovary. Nut commonly obovate, lenticular, or obtusely trian- 
gular, crowned with a tubercle or bulbous base of the style. 
— Culms simple, leafless, with truncate or mucronate sheaths 
at the base ; spike terminal, solitary, naked. 
Eleocharis, R, Brown, prod. 1. p. 224 ; Rcem. ^ Schult. 
syst. 2. p. 3 ; Gray^s nat. arrang. of Brit. pi. 2. p. 77. 
Eleocharis, Eleogenus, Limnochloa and Scirpidium, N. ah 
Esenh. in Limiaa, 9, pp. 293, 294, and in WighVs co7itrib. p. 
71. 
Heleocharis, and Limnochloa, Lcstih. ess. fcirn. Cyp. p. 41, 
no. 50 and 52. 
Species of Scirpus, Linn., Vahl, Kunth. 
^ 1. Spike cylindrical ; scales rigid, arranged in a spiral 
order ; style 3-cleft; nut biconvex; pericarp thin; tubercle 
cartilaginous, compressed, colored. — Limnochloa. 
1. Eleocharis equisetoides. 
Culm terete, remotely nodose, papillose; spike cylindrical; 
scales suborbicular-ovate, very obtuse, or slightly pointed; 
* " Cyperus setaceus, Retz. et Willd. sp. pi. 1. p. 269, hue quoque- 
rcferendus a reliquis differt, nuce 3-gona, et spicula disticHa." R. Broum, 
prod. 1. p. 221, in bis Observations on the genus Eleocharis. 
