Arahis. CRUCIFER/E. 31 



above: lowor leaves often simple, sn])cor(late-orl)ieular, 1 to 2^ iiiclies broad, 5-7- 

 nerved, repaiid ; the iipjxT deeply lobcd or ])iiinately r)-f(jliolate, the leaflets ovate to 

 oblong, more or less irregidarly toothed or entire : petals 6 to 9 lines long, white or 

 pinkish: pods 1 to 1^ incluis long, as many lines wide, pointed at each end and 

 tipped with a style 1 to H lines long: pedicels spreading, ^ to 1 ^ inches long. — 

 PI, Ilartw. 297. C. purpurea, Torr. <t Gray, Fl. i. 6G7. Dentaria interjrifolia <fe 

 Californica, Nutt. in Torr. & Gray, Fl. i. 88. C. anr/ulata, Torr. in Pacif. 11. Rep. 

 iv. 65, &c. 



In the Const Rnnpps fioni Snii Diego to Mendocino County. Specimens Imve nlso l)ccn received 

 from tlie noitliern Sierra Nevada (Mm. Ames, Ijfmmnn, he), winch nppenr to Iwlong to tliis spe- 

 cies, thou<;h in the early state with nil the habit, of a Dentaria. Tlie talkers, as usual, liave a 

 pungent taste, and the leaves arc often marked witli purjile. 



4. C. Brcweri, Watson. Glabrous or slightly pubescent at base : stems from a 

 running rootstock, flcxuous, decumbent at base, 6 to 18 incbes high, usually 

 simple : leaflets 1 or 2 pairs, rounded or oblong, the terminal much tlie largest, ^ to 

 an inch or more long, entire or coarsely sinuate-toothed or lobed, obtuse, often cor- 

 date at base; radical leaves mostly simple and cordate-reniform : petals 2 lines long, 

 white : pods 8 to 15 linos long, obtuse or scarcely beaked with a short style, ascend- 

 ing on pedicels 3 to 4 linos long. — Proc. Am. Acad. x. 3.'VJ. 



In the Sierra Nevada, from Sunora Pass northward (^Brewer, Anderson) ; Oregon {Hall), and in 

 the mountains eastward to Wyoming. 



C. ANf.ULATA, Hook., and C. couniFoi.iA, C.ray, Iwth of tliis proup, are found in Oregon and 

 may reach the northern limits of tlic State. The first has till .slender siniplo stcn)s ; leaves all 

 ternate, the leaflets cuneate-ovato or -oblong, with 3 or rarely 5 lobes or coarse teeth ; flowers few, 

 white, 3 to 4 lines long, on slender ascending pedicels ; pods short. The latter is stouter, with 

 simple cordate-orbicular or -ovate leaves, the margin sinuate ; flowers white, 4 to G lines long ; 

 pods an inch long, attenuate above, on rather short pedicels. This species ranges to Colorado and 

 Now Mexico. Both have ranning rootstocks. 



6. ARABIS, Linn. 

 Pod linear, flattened ; valves 1-nerved, not strongly. Seeds in one or two rows, 

 flattened and usually winged ; cotyledons accumbent. Sepals short or narrow, 

 rarely colored. Petals with a narrow claw and flat blade, white, rose-colored, or 

 purple. Anthers short, ovate or oblong, scarcely emarginato at base. Stigma 

 entire or somewhat 2-lobed. — Krcct, with perpendicular root.s, and undivided leaves, 

 the cauline sessile and usually clasping and auricled at base. 



A large genus of perhaps 100 species, most abundant in Europe and Northern Asia. There 

 are 20 or more species in North America. 



* Annual: pod rejlexed, long-beaked : leaves narrowed at base. 



1. A. longirostris, Watson. Glabrous, glaucous, slender, a foot high or more, 

 branched : radical leaves ovate-spatulate, entire or sparingly toothed ; the cauline 

 linear-lanceolate, an inch long : racemes loo.se ; flowers smalli iVw. light pink ; petals 

 IJ lines long, narrow, a littl(^ exceeding the calyx : pods U to 2 inches long, pen- 

 dent on short pedicels ; beak 3 lines long, narrow : seeds" in one row, narrowly 

 winged. — Bot. King Exp. 17, t. 2. 



In alkaline soil in the valleys of N. W. Nevada, and on the islands in Salt Lake ( /f'rt/.wn) ; 

 S. Utah, Parry: doubtless in Northeastern California. 



* * Biennials : pods s(raifj/i(, sfrirl/i/ rrert, nnrrmr/;/ linear : jJowers srwil/, while or 



nearli/ .so. 



2. A. perfoliata, Lam. (Jlancous: stem stout, usually simple, 2 to 4 feet high, 

 mostly glal)rnu'< but often somewhat hirsute with spreading hairs toward the base : 

 lower leaves spatnlate, 2 to 4 inches long, sinuatc-pinnatitid or toothed, ciliate at 



