OF ARTS AND SCIENCES. 39 



Cardamine angelorum. Anuual, glabrous and glaucous, sub- 

 erect, branching above, leafy to the base of the short raceme : leaves 

 piunately divided, the straight divaricate lobes (5 or 6 pairs) linear, 

 obtuse, entire or rarely with a lateral lobe at base, 9 lines long or 

 less: floweis purplish, 2 lines long: pods slender, 1| inches long by 

 § of a line wide, ascending ; stj le short : seeds small. — On stony 

 ridges near Los Angeles Bay. (594.) 



Nasturtium (?) laxltm. Annual, glabrous, slender, ascending, 

 the elongated branches very lax : leaves pinnately divided, the nar- 

 rowly linear straight divaricate segments (2 or 3 pairs) entire, acute, 

 8 lines long or less : raceme lax, elongated, the soon distant flowers 

 small (1|- lines), purplish, on slender spreading pedicels: immature 

 pods reflexed, narrow, 3 to G lines long, about equalling the pedicels, 

 the cells about 6-seeded ; style stout. — The purpli^h flowers and 

 immature pods leave the genus somewhat doubtful. It may be a 

 Tkehjpodium, though differing in habit from other species of that 

 genus. On sandy plains near Los Angeles Bay. (598.) 



Sisymbrium CANESCENS.Nutt. Mountains, Los Angeles Bay. (579.) 



Lepidium Palmeri. Annual, decumbent or procumbent, branch- 

 ing from the base, hispid throughout : leaves pinnately divided, the 

 narrow lobes with usually a single tooth on the upper margin : 

 racemes sessile, short, rather dense ; pedicels short, broad and flat : 

 flowers minute, aj^etalous : stamens 2 : pods thinly pubescent, round- 

 ovate with short blunt wings, li^ to nearly 2 lines long, on spreading 

 or somewhat recurved pedicels ; stigma sessile. — At Los Angeles 

 Bay, in the shade of rocks and bushes. (560.) 



Ltrocarpa Coulteri, Hook. & Arn. The typical form. At 

 Los Angeles Bay, among rocks and under bushes. (540.) 



Cleome tenuis. . Annual, erect, slender, branching, 1 to 3 feet 

 high or more, glabrous or the petioles pubescent : leaves 5-foliolate, 

 the leaflets narrowly to linear-oblanceolate, obtuse, ^ to 1 inch long, 

 equalling the petioles : racemes loose, few-flowered ; flowers yellow, 

 2 lines long, on slender pedicels : pods sessile, narrow, spreading, 1 to 

 14^ inches long, including the style: seeds transversely rugose. — At 

 Guaymas, on hillsides. (214.) 



Wisltzenia Palmeri, Gray. Three to five feet high ; leaves 

 mostly 3-foliolate. At Guaymas. (74.) 



Atamisquea emarginata, IMiers. A stiff brittle shrub, about 6 

 feet high, with white flowers. Muleje. (28.) 



Oligomeris glaucescevs. Camb. At Los Angeles Bay, in saline 

 soil. (547.) 



