166 A SKETCH OF THE BOTANY OF THE BASIN OF THE GREAT SALT LAKE OF UTAH. 
COMPOSITA. 
Evupatorium purpureum. Linn. Torr. and Gr., fl. 2, p. 81. (Thoroughwort.) Stem 
stout, simple, fistular; leaves verticillate, oblong-ovate or lanceolate, veined, scabrous or 
glabrous above, serrate with mucronate teeth. Heads in large compound corymbs of pur- 
ple or flesh-colour flowers. Northern end of the Great Salt Lake, Colonel Fremont. 
Aster oblongifolius. Nutt. in Torr. and Gr., fl. 2, p. 143. (Starwort.) Stem much 
branched, somewhat hairy; branchlets loosely paniculate-corymbose; leaves narrowly 
oblong or lanceolate, partly clasping, mucronulate scales of the involucre numerous, some- 
what glandular, with elongated and squarrose-foliaceous summits; achenia caulescent. 
June. Stansbury Island, Major Stansbury. 
EriGERon macranthum. Nutt. in Torr. and Gr., fl. 2, p.173. (Fleabane.) Stem leafy 
to the summit; leaves glabrous, with ciliate margins, the lowermost spathulate, tapering 
into a petiole; the upper sessile, partly clasping, oblong-obovate or elliptical, obtuse; flow- 
ers rather large, with purplish-blue ligules. June. Great Salt Lake Valley, Mrs. Car- 
rington. 
E. . . . =. concinnum. Torr. and Gr., fl. 2, p.174. Very hirsute throughout. 
Stems several from the same root, slender, leafy and branching above, the branches ter- 
minating by single heads on long peduncles; leaves narrowly linear, entire, the lower- 
most tapering into a petiole; rays white or pale blue, numerous, in a single series; invo- 
lucre very hirsute. Great Salt Lake Valley, Major Stansbury, Mrs. Carrington. 
Small undeveloped specimens of the above, 2—8 inches high, from Mrs. Carrington’s 
collection, might be mistaken for EL. pumilum of Nuttall. 
Livosyris serrulata. Torr. in Stansb., Rep. p. 389. Leaves narrowly linear, 3 nerved, 
rigid, acute, serrulate; heads fastigiate, corymbose, subquadriflore; scales imbricated in 4 
—5 series, oblong-lanceolate, spreading, the exterior ones shorter. Valley of the Great 
Salt Lake, Major Stansbury. 
L. . . . . graveolens, Torr. and Gr., fl. 2, p. 234. Shrubby and much branched; 
leaves very narrowly linear, glabrous, uninerved; heads five-flowered, clustered; scales of 
the involucre few, loosely imbricated in about 3 series, glabrous, carinate; the outermost 
very short, oblong-ovate; the others elongated, linear. Northern extremity of the Great 
Salt Lake. Col. Fremont. 
LapHamiA Stansburyi, Gray, Pl. Wrightiane, part 1, p. 101. Stems nearly a foot high; 
heads three lines long, and as broad; scales of the involucre about fifteen, lanceolate-ob- 
long; branches of the style filiform-subulate. Near the Great Salt Lake, Capt. Stans- 
bury. 
STENOTUS cespitosus. Nutt.in Torr. and Gr., fl. 2, p. 238. Asmall plant, 4—6 inches 
