78 



MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



(Rabbit Springs, San Bernardino 

 County) and Arizona (Tuba City). 



2. Puccinellia simplex Scribn. (Fig. 

 78.) Annual; culms 7 to 20 cm. tall; 

 blades narrow, soft, flat; panicle nar- 

 row, about half the length of the en- 

 tire plant, the branches few, short, 

 appressed, mostly with 1 spikelet; 

 spikelets 6 to 8 mm. long, appressed ; 

 glumes strongly 3-nerved, 1 and 2 

 mm. long; lemmas 2.5 mm. long, 

 tapering from below the middle to the 

 acute apex, more or less pubescent 

 over the back. O — Alkaline soil, 

 California; common in alkaline areas 

 of the San Joaquin Valley. 



Figure 78. 



Puccinellia simplex. Plant, X 1; floret 

 X 10. (Type.) 



3. Puccinellia rupestris (With.) 

 Fern, and Weath. (Fig. 79.) Annual; 

 culms rather stout, mostly 10 to 20 

 cm. tall; blades flat, 2 to 6 mm. wide; 

 panicle ellipsoid, glaucous, rather 

 dense, mostly 3 to 6 cm. long, the 

 branches mostly not more than 1.5 



Figure 79. — Puccinellia rupestris. Panicle, 

 floret, X 10. (Martindale, N. J.) 



X 1; 



cm. long, stiffly ascending, floriferous 

 nearly to base; spikelets 3- to 5-flow- 

 ered, 5 to 8 mm. long, sessile or nearly 

 so; glumes 3- to 5-nerved, 1.5 and 2.5 

 mm. long; lemmas 3 to 3.5 mm. long, 

 firm, obscurely nerved, glabrous, ob- 

 tuse, the apex entire or nearly so. 

 O — Ballast near New York and 

 Philadelphia. Europe. 





Figure 80. — Puccinellia fasciculata. 

 Panicle, X 1; floret. X 10. (Steb- 

 bins, Maine.) 



