174 A SKETCH OF THE BOTANY OF THE BASIN OF THE GREAT SALT LAKE OF UTAH. 
dilated; corolla open, narrow, obconical, of a blue color, with oblong lanceolate-obtuse 
lobes 3 times longer than the cleft appendages. Great Salt Lake Valley, Major Stansbury. 
ASCLEPIADACE &. 
AcERATES decumbens. Decaisnes in D. C. Prodr. VIII. p. 522. Anantherix decumbens, 
Nutt. (Milk Weed, Silk Weed.) 
Var. erecta. Stem erect, 5 feet high. Leaves scattered, sometimes verticillate in 
threes, ovate-lanceolate, 4—5 inches long and 1 broad, shortly petiolate. Umbel terminal 
solitary, globose, 22—3 inches in breadth; pedicels pubescent; calyx and corolla green, 
crown deep purple. Great Salt Lake City. May. Mrs. Carrington. Probably the same 
that was found by Major Stansbury on Stansbury Island, and mentioned by him, at page 
175 of his report, under the name of Silk-plant. 
CHENOPODIACEA. 
 OBIONE canescens. Mogq. in D. C. Prodr. XIII. p. 112. Plerochitum occidentale, Torr. & 
Frem., in Fremont’s 2d Rep., p. 518. Stem suffrutescent, erect, somewhat angular; 
leaves sessile, alternate, oblong or linear-oblong, entire, covered with a whitish-mealy 
crust; flowers dioicious, glomerate on short pedicels at the summit of the branches; fruit 
compressed, from bracts 2 lines long. Saline soils on the border of the Lake, Maj. Stans- 
bury and Col. Fremont. 
O. . . . confertiflora, Torr. and Frem. Rep. Stem pubescent, much branched, 
erect; leaves alternate, ovate, rather obtuse, petiolate, entire, crowded, somewhat coria- 
ceous, white with a mealy crust; bracts broadly ovate, obtuse, entire, the sides without 
appendages. A small shrub with rigid, crooked and somewhat spinescent branches of a 
whitish aspect. On the flats of the Lake with the preceding, Col. Fremont. 
Graya polygonoides. Hook. and Arn. in Hook., Icon. pl. t. 281 and 588.  G. spinosa, 
Dougl. in D. C. Prodr. XIII., p.119. (Grease-wood.) Stem erect and branching; branches 
ascending or divaricate, terminating into a spine, and covered with a whitish bark; leaves 
6—10 lines long, 12—2 broad, oblong-lanceolate or obovate, cuneate at base, fleshy, sub- 
coriaceous, whitish; calyx fructiferous, elliptic, emarginate at base; style persistent, shortly 
apiculate; fruit very small, resting on the centre of the calyx; seed orbicular-elliptic, with 
a somewhat obtuse margifi. Saline Shores of Carrington Island. Major Stansbury. 
SALICORNIA herbacea? (Glasswort.) Linn. Gray’s Man., p. 366. Annual, erect or as- 
cending, much branched; the joints somewhat thickened at their summit, and with two 
short blunt or notched teeth; spikes elongated, tapering, but rather obtuse at the apex. 
Southern Flats of the Great Salt Lake, Colonel Fremont. 
ARTHROCNEMUM fruticosum. Moq. in D.C. Prodr. XIII, p. 151. Torr. in Stansb. Rep., 
p. 394. Stem frutescent, one foot high, and much branched; the joints of the branches 
