OF ARTS AND SCIENCES. 123 



four inches long, obtuse, coarsely sinuate-toothed, attenuate to a broad 

 petiole ; those on the branches narrower and acutish : calyx pubescent, 

 a line and a half long or less, a little shorter than the pinkish petals : 

 pods somewhat pubescent, ascending, falcate, three inches long and a 

 line wide : style very short : seeds in one row, broadly winged. — 

 Yosemite Valley, n. 4881 Bolander. A strongly marked species. 

 / Arabis Breweri. Perennial, cespitose, canescent with a dense 

 stellate pubescence and villous above with spreading nearly simple 

 hairs: stems simple from a branching base, two to ten inches high : 

 radical leaves spatulate, an inch long or less, shortly petioled, entire ; 

 the cauline ovate-oblong, sessile but not sagittate, acute : petals deep 

 rose-color, from one to four lines long, twice longer than the purplish 

 sepals : pods spreading or recurved, about two inches long, a line 

 wide: style none: seeds in one or two rows, narrowly winged. — In 

 the Coast Ranges from Mt. Diablo ( Hrewer, Bolander) to Lake 

 County (Greene) and Mendocino County (Bolander). Most like 

 A. arciiata, Gray, of the Sierra Nevada and mountains of S. Califor- 

 nia, which is a taller species, with larger flowers, longer pods, and 

 different pubescence, the leaves mostly toothed and the cauline ones 

 sagittate. 



/ Smelowskia (?) Fremontit. a dwarf alpine perennial, pubes- 

 cent Avith scattered short spreading hairs, the branching somewhat 

 woody base covered with a few remnants of old leaves : stems two to 

 four inches high : leaves less than half an inch long, pinnate with one 

 to three pairs of linear leaflets, which are strongly nerved and slightly 

 revolute : sepals glabrous, broad, less than a line long ; petals white, 

 twice longer: immature pods two to three lines long, somewhat ob- 

 compressed, obtuse at base and scarcely attenuate above, beaked with 

 a short thick style ; valves faintly nerved : seeds small, ten or more in 

 each cell ; cotyledons obliquely incumbent. — Collected by Fremont 

 on hills near Klamath Lake, and by Lemmon in the northern Sierra 

 Nevada. It much resembles S. cahjcina in habit, but the characters 

 of the fruit do not fully accord with those of the genus. 

 •^ Lyrocarpa Palmeri. Pod reniform-obcordate, rounded at the 

 base, four or five lines wide, broader than high : cells 2-seeded, the 

 upper seed horizontal, the lower pendulous : petals linear, purplish, 

 six lines long, twice longer than the calyx. — It otherwise resembles 

 the original L. Coulteri^ Hook. & Harv. The peculiarities of the 

 fruit recpiire a modification of the received generic chai-acter. From 

 the Big Caiion of the Tantillas Mountains, below San Diego ; col- 

 lected by Dr. Edward Palmer. 



