872 GRAMINE:. | Deyeuxia. 
This is unknown to me, and I have therefore reproduced Hooker’s descrip- 
tion. It appears to differ from all forms of D. avenoides in the short “ almost 
terminal’’ awn. Professor Hackel suggests that it may be a variety of D. quad- 
riseta, but the large spikelets and produced rhachilla hardly support such a 
view. 
6. D. quadriseta, Benth. Fl. Austral. vil. 581.—Culms tufted, 
erect, stout or slender, smooth or rather rough, 1-3 ft. high. Leaves 
much shorter than the culms, variable in width, sometimes 4 in. 
broad and quite flat, at other times very narrow and setaceous 
or filiform, often involute, glabrous or minutely scaberulous; sheaths 
smooth or rough, erooved ; ligules oblong, membranous. Panicle 
14-6 in. long, very narrow and spike- like, dense, cylindric, rarely 
broader and obscurely lobed, pale-green or brownish-green, shining ; 
branches numerous, short, erect, branched from the base. Spike- 
lets small, about tin. long, shortly pedicelled. Two outer glumes 
subequal, lanceolate, acuminate, keeled, keel minutely scabrid, 
slightly hairy at the base, tip minutely but distinctly 4-awned ; 
dorsal awn attached below the middle, sometimes almost basal, 
usually not much longer than the outer glumes. Palea almost 
as long as the flowering glume, narrow, 2-nerved. Rhachilla either 
not at all produced at the back of the palea or very obscurely so. 
—Agrostis quadriseta, R. Br. Prod. 171; Hook. f. Fl. Nov. Zel. 
296; Handb. N.Z. Fl. 330; Buch. NZ. Grasses, t. 26. eek 
quadriseta, Labill. Pl. Nov. Holl. i. 25, t. 32. 
NortH anp SoutH Isnanps, Stewart Istanp: Not uncommon through- 
out. Sea-level to 2500 ft. 
Also abundant in Australia and Tasmania. The rhachilla is seldom pro- 
duced at the back of the palea, so that the plant technically falls into Agrostis. 
But it is so closely allied to D. avenoides, which is an undoubted Deyewxra, that 
I have decided to leave it in that genus. 
7. D. Petriei, Hack. in Trans. N.Z. Inst. xxxv. (1903) 380 (sub. 
Calamagrostis).—Culms slender, erect, terete, 1-3 ft. high, glabrous, 
3-noded, uppermost node near the middle of the culm. Leaves 
much shorter than the culms, about fin. broad, flat, rather flaccid, 
smooth or scaberulous on the upper surface ; sheaths terete, close, 
scaberulous; ligules oblong, obtuse. Panicle 3-6in. long, narrow 
but not very dense; rhachis smooth; branches short, binate or 
ternate, the lowermost often distant, short, erect, sparingly divided ; 
pedicels shorter than the spikelets, smooth. Spikelets ++in. long, 
pale-green. Two outer glumes subequal, narrow-lanceolate, acute, 
rigidly membranous, 1-nerved, scabrid on the keel; 5rd or flowering 
glume about 4 shorter, lanceolate, subacute, minutely denticulate at 
the tip, firm but membranous, scabro-punctate on the back, callus 
with silky hairs 4 the length of the glume; awn inserted about the 
middle of the back, str aight, equalling the empty glumes or rarely 
exceeding them. Palea almost as long as the flowering glume, 
