74 
7. A. Diegoensis Vasey. Torr. Bull. Club, xu. p. 55. Culms 3 to 9 from a 
running root-tock 2 to 3 feet high; leaves plane, 3 to 8 inches long, narrow; ligule 
2 lines long; acute; sheaths shorter than the internodes; panicle 4 to 7 inches 
long, lanceolate, narrow; rays erect, below numerous (5 to 7), unequal, the longer 
1} to3 inches long, flowering above the middle, equaling or exceeding the inter- 
node; empty glumes somewhat unequal, 1} to 14 lines long, acute; floral glume 
nearly as long, 4-toothed at apex, 2 lateral nerves on each side of the midnerve, which 
often terminates above the middle with or without a short awn; no palet.—Santa 
Cruz, (Dr. Anderson) and San Diego County, Cal. (C. R. Orcutt), 
This is nearly related to the preceding. 
Var. FOLIOSA (Agrostis foliosa Vasey). (Bot. Gaz. x1. p. 337). Culms stoloni- 
ferous. 1} to 2 feet high, very leafy, otherwise like the preceding.—Oregon (Dr. 
Bolander and Mr. Howell), 
3. A. Hallii Vasey, Culms erect, stout, 2 to 3 feet high, smooth, not stoloniferous; 
lower leaves narrow, inclined to be involute, the upper ones flat, 3 to 6 inches long, 1 
to 2 lines wide, scabrous; lingules 2 to 3 lines long, acute; panicle 6 to 9 inches long, 
the rays erect, spreading, the lower in clusters of 5to many, unequal, the longer ones 
2to 3inches, branching above the middle; spikelets 14 lines long, somewhat ay - 
pressed and crowded; empty glumes acute, 14 to 2 lines long, scabrous on the keel; 
the floral glume nearly as long, with 2 tufts of hairs at the base; palet wanting.-- 
Oregon, Washington and California, 
Var, CALIFORNIA (4. elata Thurb, in Bot. Cal.). Culms rather stout, erect, from a 
perennial root, 2 to 3} feet high, smooth ; radical leaves 4 to 6 inches long, very nar- 
row, the lower becoming involute, the upper ones flat, 3 to 6 inches long, 1 or 2 lines 
wide, scabrous especially below ; lingules 2 to 3 lines long, acuminate; panicle open, 
erect, spreading, rather narrow and elongated,6 to 10 inches long; rays unequal, on 
clusters of 5 to 7 below, and in pairs above, at intervals of 14 to 2 ine‘es, branching 
above the middle, the longer 2 to 3 inches long; spikelets 14 lines long, somewhat 
crowded on the branches, on pedicels shorter than or twice their own length; glumes 
very acute, rough on the keel, floral glume nearly as long as the empty ones, with a 
few very minute hairs at base, obtuse; palet wanting.—California. 
9. A.virescens H. b. K. (Bot. Cal. 1m. p. 274.) Culm 1 to 2 feet high or more, 
perennial; leaves erect, flat, about 6 inches long and 4 lines broad, rough on both sides; 
ligule over a line long, truncate; sheaths much shorter than the internodes, mostly 
smooth; panicle pale-greenish and tinged with purple, about 6 inches long and 14 
broad, the rays in clusters about an inch distant on the common axis, two or three 
flower-bearing above the middle, the others for their whole length; spikelets 2 
lines long; glumes very acute, the lower somewhat longer, and terminated by a dis- 
tinct seta exceeding 4 line in length, rough on the keel and pubescent all over; 
floral glume about one-third shorter than the outer ones, bearded at the base with 
a few short white hairs, truncate, 5-nerved, the lateral nerves projecting as dis- 
tinct teeth, the central excurrent at or below the middle as a strong bent awn 
about 2 lines long; palet wanting or present as a very minute rudimentary scale.— 
California (Nos. 34, 4801, and 6079 Bolander’s), Oregon (Suksdorf). 
This is the description given by Dr, Thurber of a California species collected by 
Bolander, which has been confused with A. exarata, 
D. panicle open, rays longer and usually spreading. 
10. A. canina Linn. (Gray’s Manual, 6th ed., p.648.) Culms 8 to 18 inches high, 
with fibrous roots, radical leaves numerous, involute-setaceous, those of the culm a lit- 
tle broader; ligule acute; sheaths about equaling the internodes ; panicle 3 to Ginches 
long, erect-spreading, rays of the larger plants mostly in fives below, of the smaller 
ones in twos or threes, unequal, the longer an inch or more, branching above the 
middle; spikelets purple or brownish, mostly on short pedicels; empty glumes acute, 
smooth, 1 to 1} lines long; floral glume one-fourth shorter; awneéd below the iniddle; 
