MUSTARD FAMILY 



251 



18. Streptanthus polygaloides A. Gray. Milkwort Streptanthus. Fig. 1953. 



Streptanthus polygaloides A. Gray, Proc. Amer. Acad. 6: 519. 1866. 

 Microsemia polygaloides Greene, Leaflets Bot. Obs. 1 : 89. 1904. 



Annual, glabrous, the stems slender, branched upwards, 3-9 dm. high. Leaves linear, entire, 

 the uppermost sagittate-clasping; inflorescence racemose, lax; pedicels recurved, about 3 mm. 

 long ; sepals yellow, very dissimilar, the lower large, keeled, the lateral ones very small, the upper 

 broadly obovate, erect in anthesis ; petals scarcely exceeding the sepals, yellow, often veined 

 with red; longer filaments connate; pods straight or slightly curved, pendent, flattened-quad- 

 rangular, 2-3 cm. long, 1 mm. wide. 



Upper Sonoran Zone; foothills of the Sierra Nevada, north-central California. Type locality: "along the 

 Tuolumne River." April-May. 



19. Streptanthus diversifdlius S. Wats. Varied-leaved Streptanthus. Fig. 1954. 



Streptanthus diver sifolius S. Wats. Proc. Amer. Acad. 17: 363. 1882. 

 Streptanthus linearis Greene, Pittonia 3: 225. 1897. 

 Mitophyllum diver sifolium Greene, Leaflets Bot. Obs. 1: 88. 1904. 



Glabrous annual, the stems slender, branching, 2-5 cm. high. Basal leaves entire, linear- 

 filiform; stem leaves entire and linear-filiform to pinnately divided with few, remote, linear 

 lobes ; uppermost leaves and bracts of the inflorescence cordate-clasping, entire ; sepals yellowish, 

 with recurved tips; petals yellow, white or pinkish, at least one half longer than the sepals, 

 recurved; inflorescence racemose-paniculate, lax; pedicels ascending, 5-10 mm. long; pods re- 

 flexed, strongly flattened, straight or nearly so, 3-8 cm. long, 1-2 mm. wide. 



Upper Sonoran Zone in the foothills of the Sierra Nevada, central California. Type locality: Consumnes 

 River, California. April-May. 



1937. Streptanthus cordatus 



1938. Streptanthus barbatus 



1939. Streptanthus Howellii 



1940. Streptanthus tortuosus 



1941. Streptanthus gracilis 



1942. Streptanthus batrachopus 



