VOL. Iv.] Lower California Grasses. 389 
30. ARISTIDA BROMOIDES HBK. Empty glumes unequal, 
the first 2-3 lines long, acute, the second 314-4 lines, acute or 
obtuse, both 1-nerved. Floret about the length of the second 
glume. Awns subequal, 212-5 lines long, lateral awns slightly 
divergent. Callus densely barbate. Culms slender, branched, 
6-12 inches high, with a narrow strict panicle 2-5 inches long. 
—Saucito, October 15 (66). 
31. ARISTIDA SCHIEDEANA Trin. First empty glume lan- 
ceolate, acute, 314-4% lines long, strongly aculeolate scabrous 
on the keel for the entire length; second glume a little longer 
than the first, 1-nerved, obtuse or shortly bifid at apex, the 
smooth midnerve projecting as a short mucro between the lobes; 
flowering glume with a slender and acute barbate callus nearly 
¥% line long, the glume 6-7 lines long, with an awn 2 lines long, 
the lateral awns minute. Panicle 6-10 inches long, branches 2-4 
inches, solitary or in pairs, rather rigid, widely spreading, with 
appressed spikelets above the middle, naked below. Culms 1-2 
feet high, rather slender.—Saucito, October 15 (64). — 
32. ARISTIDA CALIFORNICA Thurber.—San José del Cabo., 
September 12 (38). 
3 ARISTIDA SCABRA Kunth, Séreflachne scabra HBK. 
Ortachne scabra Fourn.—El Taste, September 11 (26). 
33. ORYZOPSIS FIMBRIATA Hemsl. Stipa jimbriata HBK. 
Empty glumes about 2% lines long, equaling or slightly exceed- 
ing the obovate obtuse and pilose flowering glume, shortly mucro- 
nate pointed. Awn of the flowering glume about 7/4 lines long, 
once or twice geniculate, strongly twisted below, scabrous. 
Callus very short, acute, barbate. First glume 5-nerved, the 
second 3-nerved. Radical leaves involute filiform, about a foot 
long, shorter than the culm.—La Chuparosa, October 7 (72). 
34. MUHLENBERGIA LAXIFLORA Scribn.=No. 1412 C. G. 
Pringle (1887). Empty glumes about % line long, subequal, 
obtuse; flowering glume 2 lines long narrow-lanceolate, 3-nerved, 
2-toothed at the obtuse apex awned; awn 1-2 lines long. Callus 
barbate. Culms 2-3 feet high, simple, panicle narrow, elongated, 
dark purple. Perennial from a stout root-stock.—La Chuparosa, 
October 17 (74). 
