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1. G. LEPiDOTA Nutt. Flowers ochroleu- 

 cous. — Niles. Summer, 



12. Astragalus L. 



Rattle WEED. Loco-weed. 



Diadelplious. Carina blunt. Legume more 

 or less divided by the intrusion of the dorsal 

 suture. Seeds reuiform. Leaves imparipin- 

 nate. 



L A. DIDYMOCARPUS Hook. & Arn. Legume 

 transversely wrinkled, 2-seeded; corolla white 

 and violet. — Contra Costa. Summer. 



2. A. TENER Gray. Legume oo-seeded, not 

 inflated; corolla white, sometimes violet tipped. 

 0. — Golden Gate Park. Cemetery. Summer. 



3. A. LEUCOPHYLLUS Torr. &; Gray. Legume 

 inflated, stipitate in the calyx; corolla pale. 

 IC. — Sunol. Summer. 



4. A. CROTALARi^ Gray. Legume inflated, 

 sessile in the calyx; stipules distinct; corolla 

 white, more than twice the length of the calyx. 

 21 . — Sandhills near San Francisco. Summer. 



5. A. Menziesii Gray. Legume inflated, 

 sessile in the calyx; stipules connate, opposite 

 the petiole; corolla white, more than twice the 

 length of the calyx. — 71 . 



6. A. DouGLASii Gray. Legume inflated, ses- 

 sile in the calyx; corolla pale, hardly twice the 

 length of the calyx. — 71- Coast Range. Sum- 

 mer. 



