Australian Tropical Rainforest Plants - Online edition
Aristida exserta S.T.Blake
Blake, S.T. (1940) Proceedings of the Royal Society of Queensland 51: 172. Type: Mt Remarkable, near Pentland, North Kennedy District, Queensland, 11 June 1934, S.T. Blake 6130; holo: BRI; iso: BRI, K (photo BRI), MEL (photo BRI).
Densely tufted perennial; caespitose. Culms 45-75 cm long. Culm-internodes smooth; distally glabrous. Culms strongly branched.
Inflorescence a panicle. Panicle contracted, or spiciform, linear, 10-15 x 1 cm. Spikelets solitary. Fertile spikelets pedicelled. Fertile spikelets comprising of 1 fertile floret, without rhachilla extension. Spikelets lanceolate, subterete, 7-11 mm long, breaking up at maturity, disarticulating below each fertile floret. Floret callus elongated, pubescent, acute. Glumes persistent, similar, reaching apex of florets, thinner than fertile lemma. Lower glume lanceolate, 6.5-10 mm long, 1 length of upper glume, membranous, keeled with 3 veins. Lower glume surface smooth to scabrous, apex emarginate, or acute, awned. Lower glume awn 0.5-1.3 mm long. Upper glume lanceolate, 6.7-10 mm long; same length than adjacent fertile lemma, membranous, keeled, 1 -veined. Upper glume without veins. Upper glume apex acute, or acuminate, awned. Upper glume awn 0.5-1.3 mm long. Florets with fertile lemma lanceolate, subterete, 7-11 mm long, coriaceous, without keel, 3 -veined. Lemma surface scabrous; rough above. Lemma margins involute, covering most of palea, without distinctive roughness. Lemma apex acute, 3 -awned. Principal lemma awn spreading, with 9.5-11 mm long limb; without a column, persistent. Lateral lemma awns spreading as much as principal, 8.5-10.5 mm long, shorter than principal. Palea 0.2 length of lemma, without keels. FLOWER Anthers 3.
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