CATALOGUE. 273 
daged at both ends—Twin Lakes, Colorado (J. Wolf), and generally on 
the alpine summits of the Rocky Mountains and northward; also in 
Europe 
JUNCUS CASTANEUS, Smith —Stems from a creeping rhizoma, about a 
span high, naked or with one or two leaves; basal leaves shorter than the 
stem, rather stout, channelled below, nearly terete upwards; single or few 
large, few-flowered heads generally from a foliaceous sheath; deep brown 
flowers 4’ long; anthers half as long as filaments; prismatic capsules much 
longer than flowers; seeds 4”, or with the appendages 14’’ long. —Mosquito 
Pass, Colorado, J. Wolf (933), and generally on the alpine heights of the 
Rocky Mountains, to the northwest coast, and in similar regions of the Old 
World. A very conspicuous form; flowers and seeds among the largest in 
the genus. 
Juncus Tenuis, Willd—Throughout Colorado and New Mexico.— 
Rothrock (45), in 1874. 
Juncus BuFoNius, Linn.—San Luis Valley, Colorado. 
JUNCUS LONGISTYLIS, Torr. Bot. Mex. Bound. 223; Engelm. June. 
453.—Ceespitose, stoloniferous plants, with flat, grass-like leaves, erect 
stems 1-2° high, bearing large, few-flowered heads, single or several in an 
elongated, strict panicle; flowers 24-3” long, with ovate-lanceolate, acute 
sepals, of nearly equal length; anthers much longer than the filaments; 
prismatic capsule obtuse, mucronate, about as long as sepals; seeds ovate, 
abruptly pointed at both ends, striate-reticulate—Rocky Mountains to 
California; Twin Lakes and South Park, Colorado, Wolf; Santa Fé, Roth- 
rock (1005), with fewer and larger heads, and Ash Creek, Arizona (308), 
with smaller, few-flowered heads in a panicle 3-5’ long. 
Juncus MARGINATUS, Rostk—Camp Lowell, Arizona, Rothrock (711), 
the most western locality known for this species. A form with all the 
sepals acute and aristulate. 
Juncus noposus, Linn., var. MEGACEPHALUS, Torr.—San Luis Valley, 
Colorado, J. Wolf; Rothrock (174), from Zuiti, New Mexico. : 
Juncus Mertensianus, Bong.—Stems ceespitose, from a stout creeping 
rhizoma, a span to a foot high, weak, compressed, leafy ; leaves compressed 
from the sides, indistinctly cross-partitioned, mostly auricled at the sheaths; 
18 BOT 
