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Glumes

Palea

Palea tip

Spikelet base

Lemma back

Description

Plants perennial, loosely cespitose, sometimes shortly stoloniferous.Culms 10-35 cm tall, 0.7-1 mm thick, prostrate to ascending; branching intra- and extravaginal; internodes smooth, glaucous.

Basal leaves:  sheaths striate, retrorsely pubescent, glabrous, sometimes with a few long hairs; auricles absent or a short lobe, sometimes with 1-2 hairs up to 1.5 mm long; collar thickened, glabrous or shortly hairy; ligule 0.3-0.5 mm, erose or finely toothed; blade 5-15 cm long, 0.5-0.7 mm in diameter, more or less terete, involute, keeled but only faintly ribbed, falcate, sinuous or irregularly curled or more or less straight; abaxial surface glaucous with scattered to abundant stiff, straight erect to retrorse hais 0.1-1 mm long, becoming glabrous OR pubescent below and becoming glabrous OR glabrous throughout, adaxial surface abundantly hairy and/or with prickle teeth, margins scabrous or with hairs to 0.5 mm.

Inflorescence 2-10 cm long, 1-4 spikelets; rachis smooth and glabrous on the surfaces, often also on the margins; middle internodes 7-10 mm.

Spikelets solitary, tangential to the rachis, 40-50 mm long, with 4-6 florets.

Glumes more or less equal, 4-9 mm long, 0.6-0.8 mm wideglabrous, keeled, 3-veined, margins chartaceous, sometimes awned. Lemmas pruinose, mostly smooth but scabrous on the lower margins and the distal portion of the keel, awned, awns 30-50 mm, reflexed, pruinose. Palea 7-10 mm, tip pointed, bifid. Anthers 2.4-2.5 mm long, yellow.

NEED CALLUS INFO

Caryopsis 6-6.5 mm long; embryo about 1 mm. 

Distribution

NEW ZEALAND: South Island, inland Waimakariri, Ashburton, Waitaki, and Taieri Basins.

Ecology

Dry, open short tussock grassland, river beds, and rocky sites.

Cytology

2n = 42, presumably StWY

Other treatments

Treated as Elymus falcis in Edgar and Connors (2002) Flora of New Zealand.

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Formal citation of name

Anthosachne falcis (Connor) ined.

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.