(118) 



4. M. BiGELO VII 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. ELEGAXS Greene. Pappus paleaceous; 

 paleae deltoid, very short, with a slender awn 

 twice their length. — Mies. Spring. 



6. M. APHANTOCAEPHA Gray. Pappus palea- 

 ceous; paleaceous part nearly obsolete, aristate 

 part long but setaceous, slender, and very 

 fragile. — San Francisco. Spring. 



69. Malacothrix DC 



Eeceptacle, flat, naked. Akenes truncate: 

 pappus 1-seriate, bristles scabrous, silvery, 

 deciduous in a ring. — . 



1. M. CaliforxicaDO. Scapose; involucral 

 bracts in more than 2 ranks; flowers yellow. 

 Contra Costa. Spring. 



2. M. Clevelandi Gray. Branching; invo- 

 lucral bracts in 2 raDks 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; 23ersis- 

 tent bristles 0; flowers white. — Marin County. 

 Spring. 



