82 LEAFI.ETS. 



spatulate-oblanceolate, entire, loosely bristly-ciliate all around 

 the margin, the bristles simple, upper face of leaves glabrate 

 in age but when young setulose-hairy; cauline leaves oblong, 

 sessile, obscurely auricled or not at all so : flowers not known : 

 racemes in fruit rather short ; pods somewhat arcuately 

 recurved, but on horizontally spreading pedicels of nearly V2 

 inch, their own length xVo. inches, their width rather more 

 than a line, obtuse at apex, at base gradually narrowed ; seeds 

 in 1 row at the narrow base, thence upward distinctly biserial, 

 all wholly wingless and the margin obtuse. 



At 6,000 feet in the mountains of Utah near Marysvale, 

 M. E. Jones, 31 May, 1894. A graceful species in fruit ; the 

 pubescence strange for this group of species with pendulous 

 pods. 



Arabis acutina. Stems several, slender, rigidly erect, 

 less than a foot high from a short hard woody caudex of few 

 branches and with a few small leaves, these elliptic-lanceolate, 

 less than 1 inch long, acute, pale and glaucescent, also 

 roughish with a sparse stellate pubescence, the bases of the 

 flowering stems similarly roughened ; cauline leaves oblong, 

 V-z inch long or more, sessile, auricled, mostly quite glabrous : 

 flowers small, pale-purple, the sepals thin, glabrous : pods 

 about 2 inches long and a line wide, straight, ascending on 

 rather long pedicels, very acute, the valves smooth without so 

 much as a manifest midnerve : seeds in 1 row, round-oval» 

 narrowly winged. 



Mt. Thielson of the Cascade Range, Oregon, Coville and 

 Applegate, 6 Aug., 1897; their n. 434 as in U. S. Herb; 

 apparently the same also from the Three Sisters, Oregon, by 

 M. W. Gorman, 19 July, 1903 ; his n. 1692. 



Arabis tenuicula. Perennial, the much branched sub- 

 ligneous caudex only 1 to 2 inches high, this also slender like 

 all other parts of the plant, the almost filiform upright flower- 

 ing stems only 3 to 5 inches high : leaves of basal shoots from 

 ]i inch long in the earliest to ^ inch in the later, in outline 



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