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one side of the simple flattened branches, 

 which are digitately clustered at the top of the 

 culm. 0. Common. Summer. 

 Probably introduced from Europe. 



2. P. AGEOSTOIDES Spreng. Spikelets dis- 

 posed in panicles; panicle elongated, racemose. 

 2 . San Jose. Summer. 



3. P. CAPILLAEE L. Panicle diffuse and 

 spreading; spikelets scattered, disposed in 

 panicles and pointed. 0. San Francisco. 

 Summer. 



4. P. DICHOTOMUM L. Panicle diffuse and 

 spreading. Spikelets scattered, disposed in 

 panicles and obtuse. 0. Marin County. 

 Summer. 



5. P. CEUSGALLI L. Spikelets crowded on 

 the secund, spikelike branches of the panicle. 

 0. Common. Summer. 



Introduced from Europe. 



2, Phleum L- TIMOTHY. 



Spikelets 1-flowered, 8 . Glumes 2; aristate; 

 the upper palet sometimes bearing at its base 

 the rudiment of a second flower. Leaves flat- 

 tened. Panicles spikelike. 



1. P. PEATENSE L. Awn shorter than its 

 glume. 11. Common. Summer. Native of 

 Europe. 



2. P. ALPINUM L. Awn about as long as its 

 glume. 1C- San Francisco. Summer. 



ISA 



