; 
SA xn tH eehu. ; Cla.t+OA- Treins $7: 142+ > he 
170 GRAMINEAE, [Trisetum, . 
Sbicebwun (h.)Kicchhe. . 198Fo P55. 
3. T. subspicatum Beauv. Agrost. (1812) 88—Culms densely tufted, 
stout or slender, pubescent or tomentose, in New Zealand specimens from 
2 to 12in. high, rarely more. Leaves numerous at the base of the culms 
and much shorter than them, firm, erect, rather strict, flat, more or less 
downy or almost glabrous, 7g-¢in. broad; sheaths rather lax, deeply 
erooved ; ligules short, scarious, lacerate. Panicle short and dense, cylin- 
dric or almost ovoid, rarely slightly lobed or interrupted at the base, }-2 in. 
long; rhachis densely tomentose; branches short, erect. Spikelets com- 
pressed, whitish or yellowish-green, rarely purplish, shining, 2—3-flowered, 
1_1in. long. Two outer glumes unequal, lanceolate, keeled, scabrid along 
the keel, the outer l-nerved, the 2nd 3-nerved. Flowering glumes oblong- 
lanceolate, 2-cuspidate or shortly 2-awned at the tip, hairy at the base, 
keel scabrid above, sides minutely rough; awn from 4 to $ way down the 
back, longer than the glume, straight or recurved. Palea about $ shorter 
than the flowering glume, 2-nerved, scabrid along the nerves.—Hook. f. 
Fl. Antarct. i (1853) 97; Handb. N.Z. Fl. (1864) 335; Benth. Fl. Austral. 
vii (1878) 588; Buch. N.Z. Grasses (1879) t. 40a; Cheesem. Man. N.Z. Fl. 
(1906) 881. Awo cpicaka L-I1So See Atte are 
Sourn Istanp: Not uncommon in alpine and subalpine localities throughout. 41 299 
AvuckLann Isuanps: 7’. Kirk! J. 8S. Tennant! Campsety Isuanp: Sir J. D. Hooker! 
R. M. Laing, H. C. Field! Usually from 3500 to 5500ft., but descends almost to 
sea-level in the Auckland Islands. 
A common alpine grass in most countries, extending into both Arctic and Antarctic 
regions. 
Keelena § -ou~he HS— 192. 
4. T. Cheesemanii( Hack, in Trans. N.Z. Inst. xxxv (1903) 381.— 
Culms rather stout, erect, 3-12in. high, naked and puberulous above, 
leafy below, 2-noded, the upper node in the lower 4 of the culm. Leaves 
crowded at the base of the culms, flat, 9-4 in. broad, firm, erect, glaucous, 
finely scaberulous on the veins and margins; sheaths rather lax, sub- 
compressed, minutely puberulous; ligules short, truncate, denticulate. 
Panicle very dense, cylindrical, 1-24 in. long, $ in. broad ; rhachis tomentose ; 
branches densely imbricate, short, binate or ternate. Spikelets elliptic- 
lanceolate, compressed, whitish-yellow, shining, 2-flowered, about 41m. 
long. Two outer glumes slightly unequal, lanceolate, acute, scabrid on 
the keel, minutely rough on the sides, the lower 1-nerved, the 2nd 3-nerved. 
Flowering glumes lanceolate, very shortly 2-cuspidate, slightly hairy at 
the base, minutely rough, faintly 5-nerved ; awn very short indeed, from 
between the terminal teeth or just below them. Palea } shorter than 
the glume, scabrid along the nerves. Rhachilla produced between the 
flowering glumes and beyond the upper flower, silky. 
Nortu Isranp: Mount Hikurangi, Petrie! Sourn Istanp: Marlborough— 
Mount Blairich, J. H. Macmahon! Canterbury —Craigieburn Mountains, Petrie! 
Cockagne ! Hooker Glacier, T. F.C. Otago—Petrie / 3000-5000 it. 
_ This has much of the habit and appearance of 7. subspicatum, but differs from 
it, and from all the other species, in the very shortly bidentate flowering glume, wit 
the intermediate awn springing almost from between the teeth, not from the back some 
distance below the teeth, as is usual in the genus. In consequence of this peculiarity 
Mr. Petrie has proposed to remove the species to the genus Koeleria (see Trans. N.Z. 
Inst. xlviii (1916) 192). It is possible that he may be right in his contention, but as 
Professor Hackel, who first described the species, and was also the first to recognize 
its near approach to Koeleria, nevertheless decided, after full examination, to retain 
it in T'risetwm, I have thought it best to follow the same course. Technically speaking, 
Trisetum and Koeleria fall into two separate families, but nevertheless most botanists 
find a difficulty in apportioning the species. Domin, in monographing Koeleria, found 
