A SKETCH OF THE BOTANY OF THE BASIN OF THE GREAT SALT LAKE OF UTAH. 179 
high, from a very strong rootstock. Panicle ascending, loose, dark chestnut colour; sepals 
ovate-lanceolate, the three outer sharply pointed, as long as the elliptic and rather 3 
an- 
gular pod. Antelope Island. June. Major Stansbury. 
COMMELYNACE. 
Trapescantia Virginica. Linn. Gray’s Man. p. 486. (Spider Wort.) Plant either 
smooth or hairy. Leaves linear-lanceolate, elongated, tapering from the sheathing base 
to the point, ciliate, more or less open; umbels terminal, many flowered, filaments of the ~ 
stamens bearded, flowers blue, or white. On the right bank of the Elk-Horn. July. 
Mrs. Carrington. Her unique specimen has very narrow leaves with an umbel of a few 
flowers. 
CYPERACES. 
Scirpus Vorreyi. Olney. Gray’s Man. p. 499. Culm 3—angled with concave sides, 
rather slender, 2 feet high, leafy at the base; leaves 2—3, more than half the length of 
the culm, triangular, channelled, slender. Spike 1—4, ovate-oblong, acute, sessile, long, 
overtopped by the slender, erect involucral leaf; scales ovate, smooth, entire, barely mucro- 
nate. Prof. Torrey, in Stansb. Rep., says that the specimen of Major Stansbury differs 
merely from the above in its longer and larger spikes and in the shorter point of the 
achenium. Stansbury Island. June. Major Stansbury. 
GRAMINEA. 
Eriocoma cuspidata. Nutt. Gen. 1, p. 40. Stipa membranacea, Pursh. Urachne la- 
nata. ‘Trin. A beautiful grass. Culm 1—53 feet high, simple; panicle spreading, dicho- 
tomous; flowers by pairs; peduncles capillary, flexuous; leaves very long, filiform, convo- 
lute, 1—foot or more long; vagina about 6 inches, entirely sheathing the stem and the 
panicle before evolution; ligules entire, conspicuous; calyx bivalved, 1 flowered; corolla 
2—valved, short in fruit, almost spherical; seed nearly spherical. Antelope Island. 
June. Major Stansbury. 
ARUNDINARIA. . . (Cane.) Seen by Col. Fremont at the southern end of the Lake. 
Untona. . . . A species of Uniola (Spike Grass,) was also seen by Col. Fremont 
with the above. 
Triticum repens. Linn. Agropyrum repens. Goertn. Gray’s Man., p. 569. (Quick 
Grass.) Rootstocks creeping extensively; spikelets 4—8 flowered; glume 5—7 nerved ; 
rachis glabrous, but rough on the angles; awn none or not more than half the length of 
the flowers ; leaves flat, roughish or hairy above. Antelope Island. June. Major Stans- 
bury. 
Horveum jubatwm. Linn. Gray’s Man. p. 570. (Squirrel-tail Grass.) A low grass. 
