OF ARTS AND SCIENCES. 123 



four iiiflios lonji, obtuse, coarsely sinuute-toothed, attenuate to a hroad 

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

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

 pods souu'wliat pubescent, ascending, falcate, three inches long and a 

 line wide: style very short: jjceds in one row, broadly wingcid. — 

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



Arabis Breweki. Perennial, cespitose, canesceut with a dense 

 stellate pubescence and villous above with spreading nearly siinj)le 

 hairs: stems sim|)le from a branching base, two to ten inches high : 

 radical leaves spatulate, au inch long or less, !;hortly petiolcd, entire ; 

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

 rose-color, from one to four lines long, twice longer than the pur{)lish 

 sepals : |)ods spreading or recurved, about two inches long, a line 

 "nide : style none : seeds in one or two rows, nari-owly winged. — In 

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

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

 A. arcnata. 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. 



Smeloavskia (?) Fremontii. a dwarf alpine perennial, pubes- 

 cent with 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'. calycina 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 require a modification of the received generic chai'acter. Fi-om 

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

 lected by Dr. Edward Palmer. 



