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Electronic Flora of South Australia genus Fact Sheet

Family: Poaceae
Eriachne

Citation: R. Br., Prod. Fl. Nov. Holl. 183 (1810).

Derivation: Greek erion, wool; achne glume; the lemma and sometimes the glumes are hairy.

Synonymy: Not Applicable

Common name: Wanderrie grasses.

Description:
Ligule a ring of hairs.

Spikelets with 2 (rarely 1) bisexual flowers, pedicellate, in panicles; glumes 2, 7-11-nerved, persistent, membranous to scarious, rounded on the back or somewhat keeled, shorter than or as long as the lemmas; lemmas hairy on the back at least towards the base, awnless or with a terminal untwisted awn, the margins inrolled and tightly embracing the keels of the palea usually for the greater part of their length, 5-7-nerved; palea obtusely 2-keeled, more or less flat between the keels, entire or 2-fid.

Distribution:  About 40 species, in southern Asia and Australia (about 30 in the N.T.). (Lazarides (1970) The grasses of Central Australia).

Biology: No text

Key to Species:
1. Glumes hairy, lemma with an awn more or less as long as itself.
E. aristidea 1.
1. Glumes glabrous; lemma without an awn
 
2. Spikelets c. 3 mm long; small delicate annuals
E. pulchella 5.
2. Spikelets 5-10 mm long; more or less rigid perennials
 
3. Lemma recurved and in the upper part diverging from the palea, 7-9 mm long
E. ovata 4.
3. Lemma straight or incurved, usually 5-6 mm long
 
4. Base of the plant woolly
E. helmsii 2.
4. Base of the plant shortly hairy (not woolly)
E. mucronata 3.

Author: Not yet available


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