



New and interesting Plants from Western North A 



V 



By a. a. Heller 



App 



Lepidium Idahoense sp. nov. 



annual; stem 20-50 cm. hiirh, smooth to the 



naked eye, but sparingly puberulent under a lense, somewhat 

 shining, purpHsh below, much branched above, forming a corym- 

 . bose top : basal leaves not seen ; lower cauline obovate-oblong, 

 about 6 cm. long, on margined petioles of 2 cm., laciniatefy 

 dentate,^ the divisions ascending, sparingly covered on the margins 

 and veins with whitish, curved bristles; upper cauline short- 

 petioled or sessile, entire or nearly so, and finally reduced to hnear 

 bracts: inflorescence glabrous; pedicels slender, divaricate, or 

 somewhat ascending,. 4 mm. long; petals white, prominent, obo'vate 

 cuneiform, slender clawed, about 2 mm. long ; pods nearly orbicu- 

 lar, glabrous, 2 mm. or slightly more in diameter/notched ; style 

 very short, stout. 



Our no. 3044, collected on the right bank of the Snake River, 

 near Lewiston, Nez Perces County, Idaho, May ii, 1896, altitude 

 about 800 feet. Later older and taller specimens were collected 

 in gravelly ground along Hatwai creek, six miles east of Lewiston. 

 The type Is In my private herbarium. 



To 



-pidiuui 



145 of Sandberg, Mac- 



specimens 



Dougal and Heller, collected along the Clearwater river, about 

 eight miles east of Lewiston, in May, 1892. Their 

 were referred by Mr. Holzinger to Lepidium alyssoidcs 

 species with which it has no particular affinity. 



Lepidium simile sp. nov. 



Annual; stem 30-35 cm. high, strongly puberulent below, less 



4 cm 



long, 



so above, corymbosely branched above, basal leaves 3 ^ ^ ^„.- 



obovate-oblong, pinnately lobed or parted in the lower halfrthe 

 upper almost entire, bluntish, puberulent; lower cauline leaves 

 much like the basal but narrower and more acute ; upper cauline 



or nearly so, lanceolate or linear lanceolate: inflorescence 



1 1 V ' V 4 ^ 



ascending ; petals 



entire 



mm 



long, 



puberulent; pedicels slender, 3 



greenish-white, Inconspicuous, spatulate, abo°ut i mm. long:''pods 

 about 2 mm. wide, a' little longer than broad, slightly notched 

 puberulent, especially on the margins ; stigma sessile or nearly so.' 



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