OF ARTS AND SCIENCES. - 123. 
— Culms 12 to 18 inches high, with long involute erect leaves, and — 
a short lax panicle: spikelets sometimes 2-, very rarely 3-flowered, — 
3-3} lines long; empty glumes lanceolate, acuminate ; flowering glume 
broadly lanceolate, pilose all over, laciniate at apex: awn from neat 
the middle on the back, 2-3 lines long, bent and a little twisted be- 
low; rudiment nearly half as long as the floret, pilose: hairs on callus — 
short, one fifth as long as the glume. — Mt. Orizaba, 14,000 ft» — 
August (no. 227 a). 3 
TRISETUM ELONGATUM, Kunth, Gram. I. 101, Enum. Pl. I. 296. — 
This appears to be the same as 7. interruptum, Buckley, and is 
probably the Z. interruptum of Fournier. — Mt. Orizaba, 12,000 ft, — 
August (no. 191). a 
Tropa avenacea, HBK. Nov. Gen. 156, t. 48. (Uralepis 
avenacea, Kth.; Fourn. Mex. Pl. Enum., Gram. 110.) — Mt. Orizaba, — 
9,000 ft., August (no. 248). Equals Pringle’s no. 3930 and Schaf- 
ner’s 1008. Spikelets 6—8-flowered, about 4 lines long; empty glumes — 
unequal, the larger second one 2} lines long; first flowering glume 2 
lines long, oblong, deeply notched at apex, awned between the divi 
ions: awn about | line long. # 
Eracrostis LuGEns, Nees. §. Wats. in Proc. Am. Acad. XVIL — 
182.— Hill near Esperanza, 8,000 ft., August (no. 318). Equals 
_ Pringle’s no, 472. I have this species from Louisiana, collected i : 
cultivated fields at Lafayette by A. B. Langlois, Sept. 25, 1885. i 
Festuca Totucensis, HBK. Nov. Gen. I. 153? — Mt. Orizaba, 
12,000 ft., August (no. 193). Equals Pringle’s no. 5201. This 
and also no. 228 of same collection, appear to me to be only varietles 
of Festuca ovina, L. The no. 228 may be Fournier’s F. @quipetala, 
Festuca rupra, L., var. PAUCIFLORA, Scribner, n. var. Spike 
lets 3-flowered: upper flower imperfect: empty glumes unequal ; the 
lower shorter and narrower: flowering glumes lanceolate, acuminate, — 
submucronately pointed, scabrous on the back. — Mt. Orizaba, 13,000 ; 
ft., August (no. 227b). This may be F. Willdenoviana, Schult., but — 
it appears to be only a variety of F. rubra, L. 
Bromus Hooxert, Fourn., var. SoHLECHTENDALU, Fourn- Mex: : | 
Pl. Enum., Gram. 127. — Mt. Orizaba, 10,000 ft., August (n0- 189). a 
Equals Pringle’s no. 1173. This has been referred to B. carinaluss 
Hook., but upon what authority I do not know. Hooker's species « 
does not appear to be clearly known. a 
Bt ec Raa es 
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