40 CRrciFER/E. ababis. 



STREPTANTHUS. 



A. Columbiana Macoun Cat. Canada PI. ii, 304. Winter annual: al- 

 most smooth or pubescent below with branching hairs: lower leaves 

 slightly toothed and tapering into a petiole ; cauline sessile and often clasp- 

 ing: (lowers white: pods exaetly sickle-shaped, 3-4 inches long. Common 

 qd the lower slopes of mountains, northern Washington to Brit. Columbia. 



A. canesceiiK T. & G. Fl. i, 83. Finely stellate-pubescent throughout : 

 stems one to several from a perennial or biennial root, 2-8 inches high; 

 simple or branched : lower leaves linear-oblanceolate, an inch long or less; 

 caul iip 1 leaves linear, clasping but hardly auriculate: flowers small 2 lines 

 or less long, pale: pods pendulous, pubescent or glabrate, 1-1*4 inches 

 long by less than a line broad, on pedicels 1-3 lines long; valves 1-nerved 

 to the middle: seeds small, orbicular, winged, in 1 or 2 rows. On dry 

 plains. Blue Mountains and Harney valley Oregon, to the Rocky 

 Mountains and Brit. Columbia. 



A. arcuata Gray Proc. Am. Acad, vi, 187 (?). More or less stellate- 

 pubescent or hirsute : stems erect, 6 inches to 2 feet or more high from a 

 perennial woody caudex, simple or branched ; lower leaves spatulate, entire 

 or denticulate acute, 1-2 inches long; cauline oblong-lanceolate, sagit- 

 tate and clasping at base 0-12 lines long or more; racemes rather few-flow- 

 i red ; flowers pale nodding; petals 3-4 lines long, white or purple, twice as 

 long as the sepals: pods 1-4 inches long by a line or more broad erect 

 and slightly curved or spreading and strongly falcate. On rocky ridges 

 and dry plains, eastern Oregon and Washington to southwestern Oregon. 



A. subpinmilifida Watson Proc. Am. Acad, xx, 353. Canescent with a 



very tine and dense stellate pubescence: stems 1 to several from a branch- 

 ing somewhat woody base: lower leaves crowded and persistent, linear- 

 oblanceolate, entire or sparingly toothed, 9-12 lines long; upper ones 

 lanceolate, coarsely and subpinnatifidly toothed : flowers pale pink, 3-6 

 lines long: pods strongly retiexed, on pedicels 2-5 lines long, lb,-;; inches 

 long, 1-1 Vo lines broad, more or less attenuate to the short style, pubes- 

 cent, slightly curved; valves 1-nerved to the middle and veined: seeds in 

 one row, as broad as the partition, winged. On dry rocky ridges, south- 

 western Oregon and and adjacent California to northwestern Nevada. 



7 ^TREPTANTHUS Nutt. Jour. Acad. Philad. v, 134. t. 7 . 



Caulescent branching herbs with entire or toothed, or rarely 

 pinnatifid leaves and purple white or yellowish flowers. Sepals 

 o ate or oblong usually colored, equal at base (rarely one or both 

 pair saccate), commonly connivent. Petals often without a di- 

 lated blade, more or less twisted or undulate : the claw ehan- 

 nele 1. Stamens 6, the longer pair often connate below. Anthers 

 more or less elongated, sagittate at base. Pods sessile upon the 

 enlarged receptacle, oblong t<> narrowiy linear compressed to sub- 

 terete : valves 1-nerved j partition hyaline: stigma simple. Seeds 

 flat, margined or winged. Cotyledons aeeumbent. Ours all of 



£ Euklisia T. & (i. Fl. i, 67. Petals narrow, the blade but 

 little if any broader than the (daw. undulate crisped, Calyx 

 closed or with spreading tips. 



S. or bienlatns Greene 1*4. Francis. 258. Glabrous and glacous : stems 



erect from an annual or biennial root, 6-18 inches high, diffusely branched 

 from the has. 1 : lowest leaves round ohovate. very obtuse or even truncate, 

 crenately or more remotely and repandly toothed, abruptly narrowed to a 

 petiole I ;i long as the Made: middle cauline obovate-spatulate, aurieled 

 and clasping ; uppermost orbicular, mostly entire, obtuse, sepals purple, 



