(319) 



(perigyuium) globose, tapering to the base, ab- 

 ruptly rostrate; beak short. — Marin county. 

 Summer. 



15. C. PSEUDOCYPERUS L. Spikes unisex- 

 ual, upper 1 6 ; rest (3-5) ? , drooping; stigmas 

 3; utricle coriaceous, ovate, triquetrous, attenu- 

 ate into a long slender beak. — San Francisco. 

 Summer. 



2. Fimbristylis Vahl. 



Spikelets ^ , ao-flowered; palets closely im- 

 bricate all round, the lowermost empty. Peri- 

 gonium 0. Style incrassate at base, persistent. 

 Leaves narrow. Spikelets, if solitary, bracteate ; 

 if capitate or umbellate, involucrate. 



1. F. MILIA.CEA Yahl. — 0. San Francisco. 

 Folsom street. Spring. 



This tropical species has not been found again 

 since the filling in of that part of the city. 



3. Isolepis L. 



Spikelets ^ , oo-flowered. Palets imbricate 

 all round, the lowermost empty. Perigonium 0. 

 Base of the style deciduous, cespitose, slender. 



1. I. RIPARIA K. Br. Nutlets triquetrous, 

 the sides convex. — 0. Common. Spring. 



2. I. CARINATA Hook. & Arn. Nutlets tri- 

 quetrous, the sides straight. — 0. San Fran- 

 cisco. Spring. 



