226 Muhlenbergia, Volume 2 



Chyusma pterosperma (Wats.) Small, Bull. Torr. Club, 33; 

 193. 1896. 

 Oenothera pterosperma Wats. Bot. King Rep. 112. pL 14. 



1871. 

 SpJiaerostigma pterospermum Aven Nelson, Bot. Gaz, 40: 



63- 1905-." . , 



No. 8276, collected May 18, in the Sierra foothills west of 

 Bishop, Inyo county, in coarse granite sand on a steep slope 

 above Birch creek. , This inconspicuous species was not plenti- 

 ful here, and was not noticed elsewhere. The type was "grow- 

 ing under sage brush, Trinity Mountains, Nevada, 5000 feet 

 altitude; May." 



Chylisnia lancifolia 



>. -Gaulescent annual ,3 dm, high, sparingly branched from the 

 base, the stems puberufent, purplish below green above: leaves ■ 

 mostly basal, the largest 6 or 7 cm. long, the blade lanceolate, , 

 3 cm.. long, 12 mm. wide, short acuminate, the base abruptly j 

 narrowed to the petiole and commonly oblique on one side, thej 

 edges with short and distant spreading teeth, puberulent on bo|h ^ 

 sides, the veins prominent beneath: inflorescence glabrous, at , 

 length I dm. long, a few of the bracts under the lowermost ped- 

 icels like .small leaves, the others setaceous, 2,'joi 3 mm. long: 

 flowers yellow, in crowded nodding clusters: calyx 7 or 8 mm, 

 long in the bud, the tube equaling- or a little shorter tlran the 

 lobes, funnelform, 3 mm. wide across the top, the 'lobes lanceo- 

 late, acute, at length reflexed: petals broader than long, 4 mm. 

 broad, 3 min. long, rounded and blunt at top, practically no 

 claw at base: stamens a Mttlelong^f than Irhe petals: style ex- 

 serted beyond the stamens; stigma capitate: mature fruiting' 

 pedicels 10 or 12 mm. long, horizontal or ascending, the pods 

 ascending, a little longer than the pedicels, 3 mm. thick, very 

 little narrowed at apex, prominently pale veined: seeds pale yel- 

 low-brown, oblong-ovoid, i mm. long, sinooth. 



