86 
a bright yellowish-brown color. Achenium shorter than the scale, 
oblong, acute, sharply triangular in section. Style somewhat length- 
ened, 3-cleft. Stamens 3. 
Cy perns fiUculmis^ VahL 
Cyperiis Schtceinitzii^ Terr. 
Cypenis Fendlerianus^ Boeckeh, in Linmea^ xxxv., 520. — The spe- 
cies is distinguished from C Schwcinitzii^ Torn, by the very short- 
rayed heads forming a dense, compact inflorescence, and the strongly 
mucronate scales, whose tips are horizontal or downwardly curved. 
It is No. 875, Fendler, Plantre Novte-Mexican?e, and was collected 
also at Silver City, N. M., by Dr. H. H. Rusby in 1S80, 
Cyperus Buckleyi, //. sp, — Culm quite stout, triangular, smooth, 
y one to two feet high. Leaves long, linear, about 3 lines wide, smooth. 
Involucre of about four, mostly elongated, linear, sinooth leaves. 
Rays of the umbel about five to seven, the longest about four inches in 
length. Spikelets broadly linear, .5 to .75 inch long, 15 lines wide, 
i2-2o-flowered, clustered in loose heads of 12-30 at the ends of the 
rays, spreading or in part reflexed, their axes zig-zag, not winged. 
Glumes oblong, or oblong-ovate, obtusish or truncate^ with a dark 
keel and lighter brown, somewhat scarious margins, prominently 9-1 1- 
nerved. ^ Achenium obovate, very sharply triangular, obtuse, with a 
short point. Stamens 3. 
Cyperus articulatus^ L., var. conglomeratus, //. var. — Spikelets 
1-15 inches long, in dense clusters on the ends of short rays, showing 
a compact, glomerate inflorescence two to three inches in diameter. 
Cyperus dissitiflorus^ Torr. 
Cyperus esculentus, L. (C phymatodes, Muhl.).— Several forms; 
among them, one with the short rays and spikelets erect. 
Cyperus strigosus^ L. — A slender form with the spikelets disposed 
in loose clusters, and diverging at right angles from the axes. 
Cyperus setigerus^ Torr. & Hook. 
Cyperus lutescens, Terr. & Hook. — The spikelets in these specimens 
are fewer-flowered than the original description calls for, but other- 
wise they agree very well with it, and with the specimens in Herb. 
Torrey and in Dr. Gray's Herbarium. 
Cyperus Michauxiatius^ Schultes. — Numerous specimens; among 
them, one with more spreading scales, and answering to the descrip- 
tion of C ferruginescenSy Boeckel.*; also a specimen with pale brown 
spikelets. 
J Cyperus oxycarioides, n. sp. — Culm about two feet high? 
smooth, bearing on its lower portion about three elongated, linear 
leaves (S-io inches long, 3 lines wide), which are slightly rough- 
margined. Involucre of about six elongated leaves, resembling those 
of the culm. Inflorescence of a single, terminal, dense, globular 
head, about an inch in diameter, composed of a very great number ot 
sharply acute, teretish, about five-flowered spikelets, one-eighth to 
one-quarter inch in length. Scales oblong-ovate, acutish. Aclie- 
nium triangular, oblong, acute, about one-half the length of the scale, 
(one-half line long.) Stamens 3. Resembling the genus Oxycaryum, 
Rees, in outward appearance. 
* Linmea, xxxvi., 396. 
