Thysanocarpus CURVIPES Hook. Fl. Bor. Am. 1: 6(^. pi. i8. 

 1829. 

 No. 7931, collected June i, opposite Upper Soda Spring, 

 Siskiyou county, on a orravelly wooded slope. The rosette of 

 pinnate basal leaves is wantinr^, apparently from the first, but 

 the other characters agree fairly well. 



Thysiinocarpiis desertorum 



Glabrous, glaucous, yellowish, especially in the inflores- 

 cence, maximum height 2 dm, branched from the base, the 

 branches ascending, becoming somewhat racemose: leaves scat- 

 tered, the lowest ones oblanceolate, about 3 cm. long, 4 or 5 mm. 

 wide, sparingly runcinate-dentate, acute or acutish; those above 

 smaller, nearly linear, not narrowed at the base, clasping but not 

 auricled: pedicels 3 mm. long or less: flowers very small, the 

 sepals obovate-oblong, white or yellowish with broad green mid- 

 vein: petals a little shorter and narrower than the sepals: silicle 

 plane or nearly so, orbicular, 3 mm. across, slightly reticulated, 

 glabrous, minutely crenate but not perforate; the short style not 

 exserted from the notch. 



The type is no. 7681, collected April 14, 1905, on rocky 

 hilltops near Randsburg, Kern county, growing under overhang- 

 ing rocks. 



Thysanocarpus affinis Greene, Pittonia, 4: 311. 1901. 



No. 7617, collected April 7, in the valley a short distance 

 east of Caliente, Kern county, where it was found sparingly 

 near a dry watercourse. This is not typical T. affinis., which 

 should not be expected to occur in this region, but is near it in 

 flower and fruit characters. These specimens show a somewhat 

 different leaf, and are scabrous hirsute below. The apex of the 

 silicle is not notched, pointed by the style i mm. long. Greene 

 does not mention the style in his description. 



Thysaiiooarpiis foliosus 



About 5 dm. high, hirsute below, pale and glaucous, 

 branched from near the base, the branches ascending, stout: 



