370 POACE.E. 



Smooth, 12-20 cm. higli; panicle slender, few- flowered ; spike- 

 let about 5 mm. lon<^. 



James Hay, Mat on n 144; C'olonuio. Jones 475. 



7. D. holciformis I'resI, Ueliq. Ihvnk. 1:251 (1830). Aim 

 hohifnrm is Stcwd. Syn. IM. (Jram. 221 (1855). 



A smooth perennial <^rass, 60-70 cm. hi<i;h, the upper nodes 

 above tlio sheaths: ligule acute, IJ mm. long; blades scarcely 2 mm. 

 wide, the lower 40 cm. long, the upper 4-0 cm. long. ]*aniclo 

 erect, interrupted, ratiier compact, 12-15 cm. long, about 2 cm. 

 broad, rays in fives or sixes, tlower-bearing nearly to the base. 

 Si>ikelets 4.5-5.5 mm. long, florets overlap])ing for one-third their 

 length, awns protruding about 1 mm., rachilla villous, rudiment 

 about two-thirds as long as the floret: emi)ty glumes sube(]ual, his- 

 pid «»n the nerves, al)out 5 mm. long, first linear, acute, 1-nerved, 

 second acute, narrowly obovate, 3-nerved; floral glume oblong, 

 .'t-iierved, 4 mm. long, 4-t()()tlu'd. faintly hispid toward the apex, 

 awn nearly straight, starting at the middle of its glume; palea 

 oblong, as long as its glume, 4-toothed. 



California, Hnlatuln- 0071. 



8. D. calycina I'resl, Heli(i. Ilivnk. 1:251 (18^0). D. dantho- 

 nioliloH Munro, Henth. 1*1. llartw. 342 (1857). Aim clanthoiniodes 

 Trin. Mem. Acad. St. Petersb. (VI.) 1:51 (1830). 



Annual; glabrous, culms slender, 10-100 cm. high. Ligule 

 2-3 mm. long, acute; blades 1-5-10 cm. long, very nari'ow, often 

 exceeding the internodes. Panicle simple, spreading or narrow, 

 erect, rays 2-4, in half-whorls, naked below. Empty glumes oblong- 

 acute to linear-lanc^eolate. 3-nerved, first r).5-7.5 mm. long, second 

 but little shorter, extending beyond the florets. The lower floret 

 reaching one-third onto the second; floral glume ovate, 2-2.5 mm. 

 long, minutely 4-toothed. 5-nerved, awn mostly extending beyond 

 the empty glumes; palea nearly as long as its glume, curved on the 

 back. Grain flattened, not grooved, straight next the floral glume, 

 curved next to the palea. 



Arizona, Lemmon; Washington, Brandegee 1175; Oregon, E. 

 Hall 664. 



This has been confounded with D. danthonioides V'asey, which 

 see. 



