Reddish green tufts 18—30 cm, with erect culm s topped by dense cylindric panicles and much exceeding the leaves at maturity; branching extravaginal. Leaf-sheath chartaceous, glabrous, light green to light reddish brown, nerves more prominent above. Ligule 2—3 mm, erose, often tapered centrally to a fine tip, abaxially smooth. Leaf-blade 2—9 cm × 1 .5— 2 mm, folded, abaxially smooth, adaxially slightly ridged, sparsely scabrid on ridges; margins finely scabrid; tip hooded. Culm 10—24 cm, erect or geniculate at base, nodes hidden by leaf-sheaths, internode s smooth. Panicle 1 .5—4.5 cm × 5—8 mm, cylindric, dense; rachis smooth, branches and pedicels rather sparsely finely scabrid. Spikelets 5–7 mm, purplish green. Glumes subequal, 1-nerved, submembraneous, elliptic-lanceolate, acute, smooth, kee l finely scabrid on upper 2/3. Lemma 4–5 mm, 4/5 length of glumes, subcoriaceous, smooth below, finely papillose to prickle-toothed above, ± elliptic, apex shortly bifid; awn 3 .5–4.5 mm, from upper ¼ of lemma, twisted about twice at base, ± curved out - wards above. Palea c. 2/3 length of lemma, hyaline, keels thickened, faintly prickle-toothed above. Callus hairs 0 .3–1 mm. Rachilla 0.5–1 mm, bearing minute hairs throughout except at glabrous tip. Lodicules 0 .4–0 .5 mm. Anthers 0.3–0.65 mm. Gynoecium: ovary 0.6 mm; stigma-styles 1.0– 1.5 mm. Caryopsis c. 2 × 0 .6 mm, with dehisced anthers entangled in stigmas. Cleistogamous. Endemic .

Gramen montanum in locis humidis crescens , panicula cylindrica Deyeuxiae quadrisetae et D. avenoidi simile, ab ambobus arista in superiore lemmatis parte exorienti, a D. quadriseta rachilla longiore, et a D. avenoide rachilla glabriore differt. Cleistogamum.

Long-rhizomatous dioecious perennial, 10-30-(60) cm, with narrow, involute, greyish green, stiffly erect to curved leaves, often equalling the culms; branching extravaginal; leaf-blades persistent. Leafsheath light greenish to brownish grey or stramineous, smooth, ± shining, submembranous, keeled above, open to near base, with several prominent nerves. Ligule 0.5-1.0-(1.5) mm, entire, truncate or sometimes rather abruptly tapered centrally, abaxially minutely pubescent. Leaf-blade (2.5)-4.5-18.5-(28) cm × 0.5-1 mm diam., involute, abaxially glabrous, adaxially minutely pubescent; tip acicular. Culm 4.5—25—(53) cm, internodes smooth, sparsely minutely scabrid below panicle. Panicle (2)—3—6 .5—(8) cm, with short ascending branches and close-set spikelets; rachis and branches smooth or with sparse prickle-teeth. Spikelets 4.5-8.5-(10) mm, (2)-3-6- (7)-flowered, green to stramineous, often purple-suffused. Glumes subequal, glabrous; lower 2.5-4 mm, 1-nerved, elliptic-lanceolate, acute to acuminate, upper 3-5.5 mm, 3-nerved, elliptic-ovate, acute to subobtuse. Lemma 4—5 mm, 5- nerved, inner lateral nerves sometimes faint, elliptic-ovate, acute, glabrous apart from a few hairs at base of keel and outer lateral nerves. Palea 3-3.5 mm, narrower than lemma; keels with sparse minute prickle-teeth in upper ½–¾ or rarely smooth, occasionally keels and lower ½ of interkeel with sparse minute hairs. Callus with tufts of long fine hairs below lemma nerves. Rachilla <1 mm, glabrous. Anthers of male flowers 2–3 mm; of female flowers 0.2–1 mm, sterile. Female flowers: lodicules 0 .3–0 .6 mm; ovary 0.5–0.9 mm; stigma-styles 1.2– 2.6 mm; caryopsis 1.5–2.5 × 0.5–0.8 mm; embryo 0.4–0.6 mm. Endemic.

Gramen dioecium Poae sudicolae affine rhizomatibus longissimis, foliisque involutis griseoviridibus, differt autem culmis folia plus minusve aequantibus non valde superantibus, laminis foliorum adaxialiter dense pubescentibus, glumis inferioribus saepe acuminatis, spiculis pluribus et lemmatibus omnino glabris supra pilos densos ad nervorum basem implexos.

Coarse long-leaved, dioecious, extravaginally branching often pendulous grass with elongate internodes and rooting at nodes; leaf-blades persistent. Leaf-sheath 10 cm, keeled, ridged, open to base, becoming dull brown and fragile, finely retrorsely hairy; margin membranous, darker brown. Ligule 1 mm, ciliate, adaxially finely hairy. Collar conspicuous, margin short hairy. Leaf-blade to 80 cm × 3–4 mm coriaceous, folded below and at apex, ± flat elsewhere, abaxially glabrous with some lon g hairs near collar, adaxially clothed with many small antrorse hairs, denser near ligule; margin very sparsely toothed below becoming almost glabrous; apex prickle-toothed and sharp pointed. Culm to 85 cm, many-noded, erect or with some geniculat e nodes; nodes swollen, coloured, glabrous; internodes glabrous. Panicle to 25 cm, open, violet-suffused, subtended by bract to 2.5 mm; several to many solitary rarely binate branches at internodes, naked below with solitary spikelets, branches > internodes; rachis glabrous, branches and pedicels glabrous t o sparsely shortly prickle-toothed. Spikelets 10– 12 mm × 2 mm, gaping at anthesis, (1)–3–4– 6 widely separated florets; rachilla prolonged. Glumes unequal, centrally green, violet elsewhere, nerve s elevated; lower 2 .5–3 .5 mm, 1–3-nerved, upper 3 .5– 5 mm, 5-nerved (3 long 2 short), adaxially shortly hairy at apex, margins ciliate. Lemma 4.5–6 mm, 5-nerved, centrally green, violet elsewhere, abundantly finely pubescent throughout, keel prickle-toothed above, margins ciliate, membranous above, apex recurved, shortly lobed and mucronate (0.05 mm or 0), becoming erose. Palea 4.5–5.2 mm, lemma, apex bifid, keels minutely stiff hairy. Callus 0.25 mm, short, blunt, glabrous or with a few prickles. Rachilla 1.5 mm, glabrous or with a few prickles at base; prolonged. Lodicules 0 .5–1 .0 mm, acutely lobed, tip ciliate. Anthers of male flowers: 2.75–3–3 .75 mm, yellow or violet-suffused; of female flowers: 2–2.2 mm, white, pollenless. Gynoecium of male flowers: 0.8–1.0 mm; of female flowers: ovary 0.8–1.2 mm, glabrous; stigma-styles 2-3-3.5 mm, widely disposed, stigmatic hairs al - most to base. Caryopsis not seen. Endemic.

Gramen dioecium grande grossum porrecte extendens, habitu Poae ancipiti subsimile, aliter ab novozelandicis Poae speciebus valde divergens, paniculae ramis vix divisis infra conspicue nudis, nervis glumarum lemmatumque elevatis, rachillae segmentis insigniter prolongatis.