(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. LiNEAiUFOLiA DC. Awu of the pap- 

 pas 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 alTeolate. 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; 

 palese 5, boat-shaped, tapering abruptly into 

 an awn of the length of the akene. — Common. 

 Spring. 



2. M. ATTENUATA Greene. Pappus palea- 

 ceous; pale;\3 5, boat-shaped, tipped with an 

 awn shorter than the akene. — Contra Costa. 

 Spring. 



3. M. ACUMINATA Greene. Pappus palea- 

 ceous; palej\3 5, flat and straight, gradually ta- 

 pering into an awn, shorter than the palea. 

 Contra Costa. Spring. 



