(91) 



1. G. MICROCEPHALUM Nutt. Bristles of 

 pappus not united at their base into a ring; 

 involucre mainly scarious, decidedly imbri- 

 cate; leaves but slightly decurrent; white- 

 woolly; involucre turbinate. — It. Contra 

 Costa. 



2. G. Sprengelii Hook. & Arn. Bristles 

 of pappus not united at their base into a ring; 

 involucre mainly scarious, decidedly imbri- 

 cate; leaves but slightly decurrent, white- 

 woolly; involucre hemispherical. — 0. Com- 

 mon. Summer. 



3. G. DECURRENS Ives. Bristles of pappus 

 not united at their base into a ring; involucre 

 mainly scarious, decidedly imbricate; leaves 

 decidedly decurrent, glandular, white-woolly 

 only underneath; involucre companulate. 

 Smell of the plant like liquorice. — 0. Sand- 

 hills. San Francisco. Summer. 



4. G. RAMOSissiMUM Nutt. Bristles of 

 pappus not united at their base into a ring; 

 involucre mainly scarious, decidedly imbri- 

 cate; leaves decidedly decurrent, linear, invo- 

 lucre turbinate. Smell of the plant like liquor- 

 ice. — 0. Sand dunes. Saucelito. Summer. 



5. G. PxVLUSTRE Nutt. Bristles of pappus 

 not united at their base in a ring; scales of in- 

 volucre woolly, only scarious at their tips, all 

 nearly of the same length. — . Moist grounds. 

 Common. Summer. 



