Amphibromus
General description:
Perennials, caespitose, rhizomatous or stoloniferous,
often with cleistogamous inflorescences enclosed by the lower leaf sheaths. Spikelets with
3 to 10 flowers; rachilla extension present or
absent. Glumes with apices obtuse to acute. Callus
of flower pubescent. Lemma awned from the
abaxial side, the awn twisted and geniculate,
spreading or recurved, lemma apex with 2 to 4
teeth or lobes, the lobes obtuse or with aristae.
Ovary glabrous. 2n ¼ 42.
Twelve spp., Australia, New Zealand, South
America.
Amphibromus is morphologically similar to
Helictotrichon, but with a glabrous ovary; the two
genera are not related (Saarela et al. 2010).