GRAMINE^E. 



489 



24. P A, Linn. 



1. Poa annua, Linn. 

 Hab. Nisqually, and very common in California. 



2. Poa abbreviata, R. Brown. 

 Poa abbreviata, R. Br. in Parry's 1st Voy. App. pp. 287 & 309. 



Hab. Paget Sound, Port Discovery, and Nisqually, Washington 

 Territory. 



3. Poa stenantha, Trin. 



Poa stenantha, Trin. in Mem. Acad. Petrop. 6, ser. 1, p. 376. 



P. leptocoma, Trin. 1. c. p. 374 ? 



Festuca nervosa, Hook. Fl. Bor.-Am. 2, p. 251, t. 232. 



Hab. Various parts of Oregon and Washington Territory. 



25. ERAGROSTIS, Beauv. 

 1. Eragrostis reptans, Nees. 

 Hab. On the Sacramento River, California. 



2. Eragrostis alba, Presl. 



Eragrostis alba, Presl, Eel. Efenk. 1. p. 279. 



Hab. On the Sacramento River, California. — In the old plant the 

 spikelets have from 10 to 15 florets. The mucro of the lower palet 

 is not a constant character, it being present and wanting in florets of 

 the same spikelet. 



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