72 KEY AND FLORA 



c. A. hirsu'ta Scop. Biennial, hirsute especially at base, with 

 spreading hairs which are simple or forked. Stems erect, simple 

 or branched, 1-3 ft. high. Leaves at base oblanceolate, coarsely 

 toothed or entire, 1-2 in. long, on winged petioles; stem leaves cor- 

 date or auricled at base. Flowers very small. Petals greenish white. 

 Pods erect on slender 23edicels, very narrow, 1-2 in. long; stigmas 

 nearly sessile. Seeds with a narrow margin. This blooms in 

 spring and is found from northern California to Alaska. 



d. A. Holboellii Hornem. Biennial, clothed with fine stellate 

 pubescence. Stems 1-several, simple or branched. Leaves at base 

 oblanceolate, narrow, entire. Stem leaves arrow-shaped. Flowers 

 becoming deflexed and generally growing on one side of the pedun- 

 cle. Petals white or pink, \ in. long. Pods flat, reflexed ; stigmas 

 sessile. Seeds in 1 row, orbicular, ivinged. This blooms in the spring 

 and is very widely distributed. 



XV. STREPTANTHUS, Jewel-flowers 



Pods linear-oblong, flattened parallel with the partition, 

 on a broad receptacle. Seeds flat, with a margin or wing. 

 Sepals iisually bright jntrple or white, uniting somewhat to 

 form a closed calyx. Petals narrow, with spreading blades. 

 Anthers long, arrow-shaped ; filaments of the larger stamens 

 often united into 2 pairs. The species are numerous and 

 difficult to distinguish. 



XVI. STANFOR'DIA (named for Hon. Leland Stanford). 



Pods linear oblong, flattened contrary to the partition. 

 Stigma 2-lobed, on well-developed pods. Otherwise similar 

 to Streptanthus. 



S. Califor'nica Watson. This is the only species. It is found in 

 the southern San Joaquin Valley, where it is very abundant in some 

 parts in early spring. 



XVII. CAULAN'THUS, Wild Cabbage 



Pods terete, or somewhat flattened, parallel with the par- 

 tition. Flowers similar to the two preceding, except that the 

 petals have broad claws, and the blades are scarcely evident. 

 Tall herbs, often with inflated stems. The species are mostly 

 local and not readily distinguished. 



