Kceleria.] 
XII. GRAMINEiE. 
335 
4000 ft., Travers ; Otago, Lindsay ; lake district. Hector and Buchanan , terraces on the 
Southern Alps, Sinclair and Haast. A very common European and northern temperate 
grass, widely diffused in Australia and the south temperate hemisphere generally, hut pos- 
sibly introduced only; it exists in none of the earlier New Zealand collections. 
19. TRISETUM, Kunth. 
Tufted grasses, usually slender, often downy. Leaves involute. Panicles 
open, or contracted and spiciform. — Spikelets 2-4-flowered. Empty glumes 
2, keeled, awnless, shorter than the spikelet; flowering glumes 2-4, with a 
terminal imperfect one, 2 -fid at the tip, divisions subulate ; awn from be- 
tween the divisions, twisted and recurved. Pale 2-nerved. Scales 2. Sta- 
mens 3. Grain free, glabrous. 
Temperate, alpine, arctic and antarctic grasses, distinguishable from Banthonia by 
habit chiefly. 
Glabrous, 1-2 ft. high. Panicle lax, spreading 1. T. antarcticum. 
Downy, 1-6 in. high. Panicle spiciform 2. T. subspicatum. 
Pilose, 1-3 ft. high. Panicle very slender, contracted 3. T. Youngii. 
1. T. antarcticum, Trinius ; — FI. N. Z. i. 302. t. 68 B. A tufted, 
erect, slender, smooth, rarely pubescent, shining grass, 1-2 ft. high. Leaves 
flat or involute, usually narrow, long or short, sometimes setaceous, quite 
smooth or scaberulous ; ligule truncate, very short, often silky. Panicle erect, 
slender, contracted or effuse, 2-10 in. long; branches short, very slender, sub- 
erect. Spikelets 5- in. long, contracted, white, very shining or pale green, 
3- or 4-flowered. Empty glumes unequal, acuminate; margins white; keel 
scabrid ; flowering ones pedicelled, deeply 2-fid, with a pencil of long white 
hairs at the base, scabrous ; awn not twisted, recurved, twice as long as the 
glume. — Air a antarctica, Porst. ; Avena antarctica, Boem. and Sch. ; A. 
Forsleri, Kunth ; Banthonia antarctica , Sprengel ; B. pallida , A. Cunn. 
Northern and diddle Islands : abundant, Banks and Solander, etc. ; not found else- 
where. Haast sends a large form from Lake Okau, with pubescent leaves J in. broad. 
2. T. subspicatum, Palisot ; — FI. Antarct. i. 97 and 377. Small, 
rather stout, densely tufted, usually downy, 4-18 in. high. Leaves shorter 
than the culms ; ligule short, truncate, silky. Panicle dense, subcylindric, 
spiciform, 1-3 in. long. Spikelets shortly pedicelled, imbricate, £ in. long, 
2- or 3-flowered, pale greenish-white, shining, pubescent. Empty glumes 
shorter than the spikelet, unequal, obtuse ; flowering ones on hairy pedicels, 
downy, 2-cuspidate ; awn recurved, dorsal, as long as or longer than the 
glume, inserted below the 2-cuspidate tip. 
Var. 0. More glabrous. Spikelets rather narrower. Glumes nearly glabrous. 
diddle Island : Upper Awatere valley, Sinclair ; Otago, lake district, Hector and Bu- 
chanan; rivulets of the Hopkins river, alt. 2500 ft., Haast. Campbell's Island, J. ID. 
H. Var. 0, Upper Awatere and IVairau valleys, Sinclair. A native of arctic Europe, Asia, 
and America, the alps of the same continents, of South America, Australia, and Tasma- 
nia, and of Euegia. 
3. T. Ifoungiij Hook. /., n. sp. Culms slender, erect, 2-3 ft. high, 
glabrous, shining. Leaves flat, ^ in. broad, and sheaths pilose ; ligule 
truncate. Panicle slender, 3-6 in. long; branches very short, with few spike- 
lets. Spikelets pale, £ in. long, shining, 1- or 2-flowered. Empty glumes 
