Graminee. | FLORA OF NEW ZEALAND. 293 
Gen. IX. ARISTIDA, Z. 
Spicule l-floræ, flosculo pedicellato. Glume 2, ineequales. Palee 2: inferior coriacea, tereti-involuta, 
apice arista tripartita; superior minima. Stamina 8, ovarii basi adnate. Caryopsis intra paleas libera. 
—Gramina sepius rigida ; folis involutis. 
A very large genus of Grasses, chiefly inhabiting tropical and warm countries; several are Australian.—Culms 
generally rigid and wiry ; leaves involute. Glumes two, unequal. Floret one, stipitate. Palee two, very unequal; 
lower coriaceous, involute, narrow, with a rigid awn split to the base into three arms, of which the two lateral are 
often patent; upper palea very minute. Stamens three; filaments adnate to the narrow base of the ovary. (Name 
from arista, an awn.) 
1. Aristida calycina, Br. ; glaberrima, culmis gracilibus rigidis simplicibus, foliis breviusculis subulatis, 
panicula angusta rara pauciflora, ramulis brevibus pedicellisgue glabris, glumis subzequalibus flosculo 
zquilongis mucronatis, aristis flore longioribus v. eequilongis.— Br. Prodr. p. 178. 
Has. Northern Island; Bay of Islands, 4. Cunningham. 
The only specimens I have seen are indifferent ones in Cunningham’s Herbarium, now in Mr. Heward's posses- 
sion. The plant is also a native of tropical Australia.—Culms rigid, wiry, quite smooth, a foot high. Leaves 
subulate, wiry. Panicle 3 inches long, very slender, few-flowered, and sparingly branched; pedicels very short and 
smooth. Spikelets 4 inch long. Glumes narrow, mucronate, as long as the lower palea, which is shorter than the 
three spreading rigid arms of the awn. 
Gen. X. DICHELACHNE, Endi. 
Spicule 1-flore; floris stipite brevi barbato. Guma 9, membranacex, acuminatz, florem «quantes 
v. superantes. Pale 2: inferior scabra v. sericeo-pilosa, bifida, inter lobos aristata; arista simplici sub- 
torta basi inarticulata; superior brevior, linearis, 2-dentata, inferiori conformis, tenerior. Stamina 2, sub- 
faleatee.— Folia convoluta. Panicula coarctata. 
Rigid, wiry Grasses, with flat, subulate or convolute leaves, and narrow, rather dense panicles of shining 
flowers; natives of Australia, Norfolk Island, and New Zealand. Glumes two, membranous, sharp, as long as or 
longer than the solitary flower, which has a short bearded stalk. Palee two: lower membranous or coriaceous, 
scabrid or silky, bifid, with a twisted or straight awn from between the lobes, which is not jointed on to the palea ; 
upper shorter, linear, two-toothed at the tip. Scales curved, three according to Endlicher (Prodr. Fl. Norf. Island), 
two according to Trinius and Ruprecht (Act. Acad. Imp. Scient. Petrop. 1842), and in all the New Zealand species. 
Seed very narrow. (Name from 3exgAos, cloven-footed, and axvn, chaff; in allusion to the bifid palea.) 
1. Dichelachne crinita, Hook. fil. ; glaberrima scaberula v. molliter pubescens, foliis planis involutisve, 
panieula elongata coarctata spiculis densissimis rarius lobata v. rariflora aristis flexuosis quasi crinita, 
glumis angustis longe acuminatis florem breviter stipitatum excedentibus, palea inferiore scaberula acuminata 
apice integra v. bifida, arista dorsali supra medium inserta longissima flexuosa haud tortili, palea superiore 
breviore apice bidentata.—D. vulgaris e£ Forsteriana, Trin. et Rupr. Act. Acad. Imp. Scient. Petrop. 1842. 
Muhlenbergia mollicoma, Nees in Herb. Hook. Agrostis crinita, Br. Prodr. Apera crinita, Pal. Beauv. 
Agrost. Anthoxanthum crinitum, Linn. Forst. Prodr. Lab. Fl. Nov. Holl. v. 2. p. 115. t. 263. Agrostis 
barbata, Banks et Sol. MSS. et Ic. 
Has. Northern Island, abundant, on dry clayey hills, etc., Banks and Solander, ete. 
A very abundant and variable Grass, quite smooth, or with the lower leaves and sheaths covered with soft 
down. Culms annual, tufted, 1-3 feet high, stout or slender, leafy at the base, and sometimes up to the inflores- 
cence. Panicle 4-8 inches long, pale yellow-green, shining, contracted, dense and spike-like, rarely thin, with the 
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