Arahls. CllUCJFKR/E. 161 



* Leaves {at least the ba.-<al) more or less lyratol.v piiii.iitifi<j ; tlie eauliiie ii-.t oonlate uor 

 aui-iculatc at base: j)ul)esceiice of simple (rarely forke<ll liaiis. 

 A. Ludoviciana, C. A. Mkykk. Decumbeiitly brancliing from tlic I>a«e, somewliat liir- 

 sute witli slinrt spreadiug simple liairs : leaves narrowly oMoiig, ail deeply piiinatiH.l with 

 nearly uniform oi.long to linear segments, mostly ol)ii(|uely l-2-toothe(l: flowers small, 

 white, on very short pedicels : jwds spreading, 9 to 15 lines long hy two thirds line l.road,' 

 on pedicels 1 to 3 lines long, beaked by a short jjoiiited style ; valves faijttlv veined and 

 obscurely 1-nerved at I)iise; seeds narrowly winged. — Ind. Sem. H(jrt. J'elrop. ix. G0.» 

 Canhniiine Vinjinicu, L Spec. ii. 656. C. Liulocldana, Hook. Jour. Bot. i. 191. C. Emjel- 

 manniana, "Ind. Sera. Uort. Berol. 1840." — Virginia to S. Carolina, and west to Missouri 

 and Texas; Pt. Loma, S. Calif., Cleveland; fl. March to May. 



A. petiolaris, Grav. Stem erect, tall, simple or branching above, glabrous or sparingly 

 l.ul)cscent with reflexed simple hairs: radical leaves few, often large and rather thick, some- 

 what lyrately piunatifid with a few (5 to 7) sinuately toothed segments, glabrous or sini'iewliat 

 haivy ; cauline leaves all petioled ; the lower pinuatifid (jr usually hastatelv lob.-.j ; the U|.])it 

 lanceolate to linear, acuminate, entire or somewhat sinuate: flowers purplish, 2 to 3 lines 

 long : pods ascendiug, 2 to 3 inches long by 1| to 2 lines broad, on pedicels 3 to 5 lines long, 

 beaked by a .slender style; valves veined, 1-uerved below the middle; seeds broadly winged! 

 — Proc. Am. Acad. vi. 187. Streptanlhm petiolaris. Gray, Tl. Fendl. 7. S. Brazf>eiisis, 

 Bnckl. Proc. Acad. PhQad. 1861, 448. — AV. Texas, from the Colorado to the IJio Grande: 

 fl. March to May. 



* * Radical leaves dentate (rarely lyrately piunatifid in .1. Canadensis); the cauline not 

 cordate nor auriculate at base: pubescence of simjile, forked, or somewhat stellately 



branched hairs. 



A. blepharoph^lla, Hook. & Arn. Biennial or perennial, branched at bise or simple: 

 stems glabrous or somewhat hirsute below with forked hairs, a foot high or less : radical 

 leaves oblong to obovate-oblanceolate, obtuse or acutish, ciliate with forked hairs; cauline 

 oblong, sessile, dentate or entire : flowers large, rose-colored : pedicels and calyx substel- 

 lately pubescent; sepals often colored, broad, 2 to 3 lines long; petals 6 lines long: pods 

 erect or ascending on pedicels 2 to 4 lines long, nearly straight, 9 to 12 lines long by about 

 a line broad, abruptly beaked by a short stout style ; valves veined, l-nerved ; seeds" round- 

 elliptical, narrowly winged or scarcely margined. — Bot. Beech. 321 ; Hook. f. Bot. Mag. 

 t. 6087. — California, on low hills near the coast, from San Francisco to Monterev ; fl. in 

 very early sjiring. 



A. furcata, Watson. Perennial: stems several from a branching rootstock, slender, erect 

 or ascending, glabrous, a f«Jot high or less: radical leaves ovate to c^blorig-ohlanceolato, 

 obtuse or acute, sparingly tootlied, 1 to 2 inches long; cauline sessile, oblong to linear', 

 entire or sparingly toothed: petals white, 3 to 5 lines long, more than twice longer than the 

 calyx : pods 8 to 20 lines long, straight or nearly so, attenuate to a rather short style : seeds 

 oblong-elliptical, winged at the lower end. —Proc. Am. Acad. xvii. 362. —Cascade Mts. of 

 Oregon and Washington near Hood Kiver and Mt. Adams, Suksdorf, Howell Bros., Mrs. 

 Barren, fjraiide;/ee, Henderson. 



Var. purpurascens, Watson, n. var. Whole plant usually purplish : stem some- 

 what puliescent: flowers purple. — A. purpurascens, Howell, Pittonia. i. 161. — Eight Dollar 

 Mt., Walilo Co., Southwestern Oregon, 7\ Howell. 



A. repanda, Watsox. Biennial: -etem stout and tall, branching, pubescent throughout 

 with sJiort and mostly stellately forked hairs, usually longer and simpler at luise : leaves 

 narrowly obovatc to oblanceolatc. 1 to 3 or 4 inches long, sjiaringly toothed or nearly entire; 

 cauline mostly narrowed to a winged petiole, acute or obtuse; flowers white, snuill : petals 

 narrow, 2 lines long, but little exceeding the sepals : pods re<'urved-sj»reading i>n usually 

 stout n.scending pedicels, 2 to 4 lines l-.ng, faintly 1-nerved at base; seeds elliptical, broadly 

 winged. — Proc. Am. Acad. xi. 122; Brew. & Wats. Bot. Calif, i. .•t2 —California, Yosemite 

 Valley, Bolnnder ; near Mineral King. Tulare Co., Coville & Fmi'sion ; San IJernardino, 

 Parish Bros. 



1 Add syn. ^f. Virjinlca, Branner & Coville, Ri-p. Geol. Surv, Ark, ISSti, 165; Britton, Bull. 

 T.'rr. Club, xix. 220. 



