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Volume V (2000) - Flora of New Zealand Gramineae
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Aveninae

AVENINAE

Spikelets with 2-several ⚥ florets, or with 1 ⚥ and 1 ♂ floret. Glumes equal or unequal, the upper sometimes slightly < lemma and seldom enclosing spikelet.

Key

1
Spikelets with 1 ⚥ floret, or rarely a few of the spikelets with 2 ⚥ florets
2
Spikelets with 2 or more ⚥ florets
3
2
Spikelets disarticulating above glumes; lower lemma awned
Arrhenatherum
Spikelets disarticulating below glumes; lower lemma awnless
Holcus
3
Lemma conspicuously awned; awn reflexed, or very stout and geniculate or straight
4
Lemma awnless, or shortly mucronate or inconspicuously awned; awn, if present, very fine, straight or geniculate
7
4
Ovary glabrous
5
Ovary hairy
6
5
Awns recurved
Trisetum
Awns geniculate or straight
Amphibromus
6
Plants annual; glumes rounded
Avena
Plants perennial; glumes keeled
Helictotrichonξ (p. 338)
7
Lemma keeled
8
Lemma rounded
9
8
Plants perennial; lemma awnless or with mucro to 1.5-(3.2) mm
Koeleria
Plants annual; lemma usually with awnlet to 3 mm
Rostrariaξ (p. 338)
9
Plants perennial; florets well separated; lemma apex irregularly broadly toothed
Deschampsia
Plants annual; florets ± adjacent; lemma apex finely bidenticulate
Aira
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