(227) 



pressed, linear; valves flattened, with promi- 

 nent nerve. Seeds oo , 1-seriate, compressed, 

 marginate. 



1. A. BLEPHAROPHYLLA Hook & Arn. Leaves 

 conspicuously ciliate; cauline leaves oblong, 

 sessile; petals purple. 2f. Presidio. Sau- 

 celito. Spring. 



2. A. PERFOLIATA Lam. (Tarritis glabra L.) 

 Glaucous; cauline leaves ovate, clasping by 

 the sagittate base; petals pale. 0. Com- 

 mon. Summer. 



17, Gardamine L. BITIER-CRESS. 



Siliqua laterally compressed, linear; valves 

 flat, without nerve. Seeds GO, 1-seriate; funi- 

 cle filiform. 



1. C. PAUCiSECTABenth. Lower leaves simple 

 or 3-lobed,cau]ine leaves 5-foliolate. 2. Com- 

 mon. Spring. 



2. C. OLIGOSPERMA Nutt. All leaves pinnate. 

 , Saucelito. San Mateo. Spring. 



18. Alyssum L. 



Silicula laterally compressed, orbicular; 

 valves concave; replum broad. Seeds 1 or 2 

 in each valve. 



1. A. CALYCINUM L. Petals white or yellow, 

 but little exceeding the sepals. 0. San Fran- 

 cisco. Summer. 



Native of the Mediterranean region, escaped 

 from gardens, 



