Mustard Family 179 



** Seeds in 2 rows in each cell. 



3. A. glabra (L.) Bernh. Biennial; erect, pubescent below, 

 glabrous and glaucous above, simple or somewhat branched, 5-10 

 dm. high; basal leaves petioled, 5-15 cm. long, oblanceolate or 

 oblong, dentate or sometimes lyrate, pubescent with simple hairs, 

 those of the stem with sagittate base, glabrous, entire or the 

 lower dentate, 5-10 cm. long, lanceolate or oblong, acutish ; 

 flowers yellowish white, 4 mm. broad; pedicels 4-10 mm. long, 

 erect; pods narrowly linear, 5-7 cm. long, 1 mm. wide, erect and 

 appressed; seeds in 2 rows in each cell, marginless; style none. 

 (A. perfoliata Lam.) 



Frequent in the foothills throughout our range. 



23. CHEIBANTHUS L. WALLFLOWER. 



Ours biennial or perennial more or less pubescent 

 herbs, with simple entire or toothed leaves. Flowers 

 mostly yellow. Siliques elongated, linear, 4-angled; 

 valves strongly keeled. Stigma lobed. Seeds oblong, in 

 1 row in each cell, marginless or narrowly margined at 

 apex. Cotyledons incumbent. (Erysimum.) 



1. C. angustatus Greene. Perennial; rather stout, erect, 5 

 dm. high or more; leaves narrowly linear-lanceolate, entire or 

 few-toothed, few and scattered above, densely clothing the basal 

 part of the herbaceous stem and short sterile branches of the 

 short subligneous caudex, the whole plant subcinerous with 

 appressed 2-forked hairs; calyx-lobes 10-12 mm. long; petals 

 yellow, the lower pair parallel to each other, the upper divergent 

 from each other; pods in a long lax raceme, 4-sided, ascending. 



Occasional in the foothills of the Santa Monica and Santa Ana Moun- 

 tains. 



2. C. suffrutescens Abrams. Perennial; often much branch- 

 ed, the branches woody, 1 m. long or less, usually straggling 

 among low shrubs, rough from the persistent bases of the old 

 leaves, usually about 5 mm. thick; floral branches clustered at 

 the ends of the main branches, slender, 3-4 dm. long; leaves 

 scattered along the floral branches, densely clothing their bases, 

 very narrowly linear-oblanceolate, 2-3 mm. broad, entire or 

 remotely and obscurely denticulate, these as well as the branches 



