(117) 



1. C. KELLOGGII Greene. Awn of the pap- 

 pus longer than the palea; palea emarginate 

 (not deeply cleft) . . San Bruno Mountains ; 

 Marin County. Spring. 



2. C. LINDLEYI DC. Awn of the pappus 

 somewhat shorter than the palea; palea brown- 

 ish, persistent. 0. Common. Spring. 



3. C. LINEARIFOLIA DC. Awn of the pap- 

 pus not longer than the palea; palea white, 

 persistent. 0. Common. Spring. 



68, (Microseris) Microseris Don. 



Involucral bracts imbricate, the outer rank 

 very short, calyculate. Receptacle flat, slight- 

 ly alveolate. Palese of the pappus entire, 

 tapering into a scabrous awn. Capitula nod- 

 ding on slender scapes, which are not thickened 

 towards the head. Flowers yellow. 0. 



1. M. DOUGLASSII Gray. Pappus paleaceous; 

 paleae 5, boat-shaped, tapering abruptly into 

 an awn of the length of the akene. Common. 

 Spring. 



2. M. ATTENUATA Greene. Pappus palea- 

 ceous; palere 5, boat-shaped, tipped with an 

 awn shorter than the akene. Contra Costa. 

 Spring. 



3. M. ACUMINATA Greene. Pappus palea- 

 ceous; paleiB 5, flat and straight, gradually ta- 

 pering into an awn, shorter than the palea. 

 Contra Costa. Spring. 



