274 3 BOTANY. 
heads few, rather large, deep brown or blackish; flowers about 2’ long, 
outer sepals acute, inner mostly shorter and obtuse, mucronate, rarely 
similar to the outer ones; stamens 6, or sometimes 3; filaments as long as 
anthers, or longer; ovary and capsule obovate, obtuse, abruptly pointed 
by the short style; seeds obovate, short-tailed at both ends.—Highest 
mountains of Colorado; Mosquito Pass; Twin Lakes, Wolf; and north- 
westward to Alaska. 
Juncus xipuioies, E. Meyer, var. Montanus, Engelm. June. |. c. 
481.—Stems flattened, 4-14° high, with laterally compressed, slightly cross- 
partitioned leaves, mostly auriculate at sheaths; heads few, many-flowered, 
light or darker brown; flowers smaller than in the last; all sepals acute, 
inner ones shorter; stamens 6; capsule oval, rostrate, about as long as 
sepals ; seeds oblanceolate, and pointed at both ends. 
Sierra Blanca, Arizona, Rothrock (808), at 12,000 feet altitude, and 
through the Rocky Mountains to California and Oregon. Our specimens 
show only 1-3 heads, but at Zuni, New Mexico, Dr. Rothrock collected a 
form (170) over 2° high, with few- (3-5-) flowered heads in compound 
panicles; sepals very acute, of equal length; anthers half as long as filaments; 
capsule (immature) rostrate. This form seems to stand near the original 
type from the Pacific coast, or to form a transition from it to J. oxymeris. 
COMMELYNEZ:. 
TrapescantTia Vireinica, L.—The narrow-leaved forms (372, 118), 
New Mexico; also Camp Grant, Arizona. 
CYPERACEA. 
Cyrerus Nurratiu, Torr—A small form, with three stamens and three 
stigmas.—Sanoita Valley, Southern Arizona (599). 
Cyperus 1NFLExus, Muhl—San Luis Valley, Colorado (979), and 
Southern Arizona (600 a, 602, 369). 
Cyperus Scuwernitzil, Torr—Colorado; also Willow Spring, Arizona, 
at 7,500 feet elevation. . 
CypERvSs CEPHALANTHUS, Torr.—Culm sharply 3-angled; angles decid: 
edly rough; sides hispidly pubescent; leaves shorter than the stem, rough- 
