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Lemma

Floret base

Callus base and rachilla

Palea tip

Palea

Description

Plants perennial, loosely cespitose and rooting at the lower nodes or stoloniferous. Culms 15-65 cm tall. 0.8-1.7 mm thick, erect, basal branching both intra- and extravaginal; internodes glabrous.

Basal leaves: sheaths scabridulous; collar thick, usually sparsely villous; auricles usually absent, if present to 1 mm long and clasping, occasionally with 1-2 long hairs; ligule 0.2-0.3 mm, truncate; blade 7.5-80 cm long, 1-1.25 mm wide or 0.5-0.7 mm in diameter and filiform, with 8-10 veins, abaxial surface glaucous and ribbed, adaxial surface densely hairy at the base, hairs to 1 mm long, hairs shorter and less dense distally.

Inflorescence 5-20 cm, with up to 8 spikelets; middle internodes 12-15 mm long, outer surface glabrous.

Spikelets solitary, tangential to the rachis, not pedicellate, (12)40-60 mm, with (4)6-9 florets; rachilla internodes hairy, hairs not extending over base of the callus above. 

Glumes unequal, usually awn-tipped, the awn to 3 mm; lower glume 4-7.5 mm, 0.7-0.9 mm wide, 3-5-veined; upper glume 4.5-11 mm, 0.6-0.8 mm wide, 5-7-veined.

Callus 1-1.5 mm, densely hairy, hairs 0.15-2.5 mm long.  Lemmas mostly smooth, scabrous at base of awn and on lower portion of the margins, tapering into a recurved awn 25-60 mm long.Palea 7.5-10.5 mm long, keels with teeth about 0.1 mm long, tips separated by 0.25-0.5 mm, intercostal region bifid. Anthers 2.5-5.5 mm.

Distribution

NEW ZEALAND: South Island, Marlborough.

 

Ecology

Mostly coastal, limestone cliffs and river terraces. Sea level to 900 m.

Formal citation of name

The combination for this species in Anthosache has not yet been published. It is in a manuscript that Barkworth and Jacobs will submit shortly.

 

Reference(s)

Edgar, E. and H.E. Connor. 2000. Flora of New Zealand, volume 5. Grasses. Manaaki Whenua Press, Lincoln, New Zealand.

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