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



spikelets long-pediceled ; glumes 4 



lemma about 3 



mm long, abruptly acute; 

 long, 



Figure 870.— Distribution of 

 Oryzopsis pungens. 



lg- 



Figure 872. — Distribution of 

 Oryzopsis canadensis. 



Figure 869.— Or yzopsis 

 pungens. Panicle, X 1; 

 floret, X 5. (Grout, Vt.) 



to 5 

 mm 

 rather sparsely appressed 

 pilose, the awn 1 to 2 cm 

 long, weakly twice genicu- 

 late. % — Woods and 

 thickets, Newfoundland to 

 Alberta, south to New 

 Hampshire, New York, 

 northern Michigan, and 

 northern Minnesota (fi 

 872). 



7. Oryzopsis kingii (Bol- 

 and.) Beal. (Fig. 873.) 

 Culms tufted, slender, 20 

 to 40 cm tall; leaves num- 

 erous at the base, the blades 

 involute, filiform, flexuous; 



ligule about 1 mm long; panicle narrow, loose, 

 the short slender branches appressed or ascending, 

 few-flowered; spikelets rather short-pediceled; 

 glumes broad, papery, nerveless, obtuse, purple 

 at base, the first about 3.5 mm long, the second a 

 little longer; lemma elliptic, 3 to 3.5 mm long, rather 

 sparingly appressed-pu Descent; awn bent in a wide 

 curve or indistinctly geniculate below the middle, 

 not twisted, minutely pubescent, about 12 mm long, 

 not readily deciduous. % — Meadows at upper 

 altitudes, central Sierra Nevada, Calif. 



8. Oryzopsis asperifolia Michx. (Fig. 874.) 

 Culms tufted, the innovations erect, the fertile 

 culms widely spreading or prostrate, 20 to 70 cm 

 long, nearly naked, the two or three sheaths bearing 

 reduced or obsolete blades; basal blades erect, firm, 



scabrous, flat to somewhat 

 revolute, elongate, 3 to 8 

 mm wide, tapering toward 

 each end, glaucous beneath ; 

 panicle nearly simple, 

 rather few-flowered, 5 to 

 8 cm long, the branches 

 appressed; spikelets on 

 appressed pedicels 3 to 6 

 mm long; glumes 6 to 8 

 mm long, somewhat ob- 

 ovate, about 7-nerved, 

 abruptly pointed or apic- 

 ulate; lemma about as 

 long as the glumes, spar- 

 ingly pubescent, more 

 densely so on the callus, 

 pale or yellowish at 

 maturity, the awn 5 to 10 mm long. % — Wooded slopes and 



V 



Figure 871. — Oryzopsis canadensis. 

 Panicle, X 1; floret, X 5. (Rand, 

 Maine.) 



If* v. 



Figure 873.— Oryzopsis 

 kingii. Plant, X 1; 

 floret, X 5. (Bolander 

 6097, Calif.) 



