(118) 



4. M. BIGELOVII Gray. Pappus paleaceous; 

 palese 5, flat and straight, passing into an awn 

 more than twice the length of the palea. Com- 

 mon. Spring. 



5. M. ELEGANS Greene. Pappus paleaceous; 

 palese deltoid, very short, with a slender awn 

 twice their length. Mies. Spring. 



6. M. APHANTOCARPHA Gray. Pappus palea- 

 ceous; paleaceous part nearly obsolete, aristate 

 part long but setaceous, slender, and very 

 fragile. San Francisco. Spring. 



69, Malacothrix DC. 



Beceptacle, flat, naked. Akenes truncate; 

 pappus 1-seriate, bristles scabrous, silvery, 

 deciduous in a ring. . 



1. M. CALIFOENICA DC. Scapose; involucral 

 bracts in more than 2 ranks; flowers yellow. 

 Contra Costa. Spring. 



2. M. CLEVELANDI Gray. Branching; invo- 

 lucral bracts in 2 ranks of equal length; be- 

 sides the regular caducous pappus an external 

 accessory pappus of 1 persistent bristle and a 

 dentate crown; flowers yellow. Contra Costa. 

 Spring. 



3. M. OBTUSA Benth. Branching; involucral 

 bracts in two ranks of unequal length; persis- 

 tent bristles 0; flowers white. Marin County. 

 Spring. 



