OF ARTS AND SCIENCES. 3G5 



somewhat saccate at base, 3 or 4 lines long ; petals ligulate, scarcely 

 exserted : pods nearly terete, 3 or 4 inches long, ascending on pedicels 

 2 to 4 lines long ; stigma sessile, deeply bifid. — In the Mohave Desert, 

 California ; collected by J. G. Lemmon in 1880, and by the Parish 

 Brothers in March, 1882. With the habit of G. crussicaulis. 



TiiLASPi Californicum. Biennial, the several stems G to 8 

 inches high, glabrous : lower leaves oblanceolate, attenuate to a slen- 

 der petiole, with few teeth, the upper oblong-lanceolate, narrower 

 toward the base and usually narrowly auriculate : flowers rather small, 

 the petals 2 lines long: pods oblanceolate, acute at the summit, 4 

 or 5 lines long; cells 2-5-sceded. — At Kneeland Prairie, Humboldt 

 County, California, among rocks at 2,500 feet elevation ; discovered 

 by Mr. Volney Rattan, June, 1882. Differing from the alpine T. 

 alpestre, which is usually a perennial, in its narrower oblong stem- 

 leaves and in its longer acute pod, which is exactly that of Ibei-idella. 



Cleojiella brevipes. Low and branching (6 inches high or 

 less), glabrous, leafy : leaves sessile or nearly so, the leaflets narrowly 

 oblanceolate, setosely apiculate, 2 to 8 lines long : flowers very small, 

 solitary in all the axils, on curved pedicels about a line long: pod 

 ovate, pendulous, very shortly stipitate, \\ lines long. — At Camp 

 Cady in the jMohave Desert, California ; S. B. & W. F. Parish, May, 

 1882. Very peculiar in its axillary inflorescence, and short pedicels 

 and stipes. 



Claytoxia cordifolta. Stems 4 to 12 inches high from a slender 

 running rootstock, bearing toward the summit a single pair of sessile 

 ovate acute leaves about an inch long ; radical leaves broadly cordate, 

 acutish, the blade 1 or 2 inches long : flowers few (about 6 or 8) upon 

 slender pedicels in a naked raceme ; petals 3 or 4 lines long, thrice 

 longer than the rounded sepals. — Collected by Dr. Lyall in 1861 on 

 the Pend d'Oreille River in N. Idaho, and in Oregon by Rev. R. D. 

 Nevius in 1872; found by me in 1880 in the mountains north of 

 Missoula, Montana, in the damp shade of firs and spruces. Nearly 

 allied to C. Sibirica, differing in the shape of the leaves, the naked 

 few-flowered raceme, and more rounded sepals. 



Claytonia ambigua. Root thickish and fusiform : stems branch- 

 ing from the base, low, stout and fleshy, leafy : leaves alternate, nar- 

 rowly oblanceolate, obtuse, 1 or 2 inches long: flowers in axillary 

 subsessile fascicles or short crowded racemes, with scarious bracts, 

 the pedicels 1 to 3 lines long ; petals unequal, shorter than the sepals, 

 which are \h to 2 lines long: stamens 5: capsule ovate-oblong, 

 shorter than the calyx, 12-15-seeded: seed shining. — Plains at El 



