868 GRAMINEA). [Deyeuxr 
Spikelets 4+in. Flowering glume silky at the base only, 
2 lateral nerves produced into short awns, dorsal awn 
from below the middle of the back .. te .. 2. D. Billardieri. 
** Flowering glume not much shorter than the empty glumes, rigidly 
membranous. Panicle narrow, contracted. 
Slender, 4-12in. Leaves filiform. Panicle 1-23in. Spike- 
lets $in. long; callus-hairs very long ae Bc 
Slender, 9-36in. Leaves narrow, involute. Panicle 2—5in. 
Spikelets 44in. ; awn from below the middle, exserted ; 
callus-hairs short. Rhachilla obviously produced .. 4. D. avenoides. 
Tall, slender, 2-4ft. Leaves flat, 4}+in. broad. Panicle 
4-6in. Spikelets 4-tin. : awn short, almost terminal. 
Rhachilla obviously produced 52 7s os 
Tall, stout or slender, 1-3ft. Leaves flat or involute. 
Panicle 2-G6in. Spikelets tin. ; flowering glume 4-cuspi- 
date; awnfrom near the base. Rhachilla not produced 
or very obscurely so ae 20 5c at 
Slender, 1-3 ft. Leaves flat, flaccid. Panicle 3-6in., lax 
but narrow. Spikelets }-4in.; callus-hairs long; awn 
from about the middle. Rhachilla obviously produced 17. D. Petriei. 
3. D. setifolia. 
5. D. Youngii. 
6. D. quadriseta. 
1. D. Forsteri, Kunth, Rev. Gram. i. T77.— Annual or rarely 
perennial, very variable in size and habit. Culms tufted, erect 
or decumbent at the base, slender, smooth, 2—4-noded, 6—24in. 
high. Leaves shorter than the culms, very narrow and involute 
or broader and flat, #,-2in. diam., almost glabrous or scaberulous 
on the margins and principal veins; sheaths smooth, grooved, 
the uppermost usually long; ligules long, narrow, membranous. 
Panicle 3-12 in. long, usually very lax and spreading when mature, 
but contracted in the young state; branches in distant whorls or 
clusters, the lowermost 2-6 in. long or more, repeatedly trichoto- 
mously divided, finely capillary, scabrid; pedicels very slender. 
Spikelets numerous, pale-green, #,-1in. long. Two outer glumes 
subequal, lanceolate, acuminate, membranous, 1-nerved, keel 
scabrid; 8rd or flowering glume 4-4 shorter, oblong, truncate, 
minutely 4-denticulate, hyaline, more or less silky on the sides 
and with a tuft of hairs at the base; awn from the middle of 
the back, slender, straight or bent. Palea narrow-linear, bifid 
at the apex. Rhachilla usually produced behind the palea as a 
short silkv bristle, but often very small and hardly perceptible.— 
Hook. f. Fl. Nov. Zel. i. 298; Benth. Fl. Austral. vii. 579. Avena 
filiformis, Yorst. Prodr. n. 46. Agrostis avenacea, Gmel. Syst. i. 171. 
A. Forsteri, Roem. and Schult. Syst. . 359; A. Rich. Fl. Now. Zel. 
131; A. Cunn. Precur. n. 253; Raoul, Choir, 39. A. emula, A: 
Br. Prodr. 172; Hook. f. Handb. N.Z. Fl. 329; Buch. 
Grasses, t. 21. A. Solandri, f’. Muwell. Veg. Chath. Isl. 60. 
NortH AND SourH IsLANDs, STEWART IsLAND, CHATHAM ISLANDS: 
Abundant throughout. Sea-level to 3000 ft. 
Var. pilosa, Cheesem. — Coarser and more robust. Leaves broader, 
}-4+in. or even more, flat. Spikelets slightly larger. D. pilosa, Buch. Man. 
