Nastus holttumianus

HABIT Perennial. Rhizomes short; pachymorph. Culms scandent; 1000–2000 cm long; 20–30 mm diam.; woody. Culm-internodes terete. Lateral branches dendroid. Leaf-sheaths hispid. Leaf-sheath oral hairs setose. Leaf-sheath auricles erect. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 8–16 cm long; 10–20 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; secund; 16 cm long; 2 cm wide. Panicle axis pubescent. Panicle branches pubescent.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets oblong, or ovate; laterally compressed; 10–11 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes several; 5 empty glumes; shorter than spikelet. Lower glume linear, or lanceolate; 2.5–5.5 mm long; chartaceous. Lower glume apex setaceously attenuate. Upper glume elliptic, or ovate; 5.5–9 mm long; chartaceous; without keels. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 9–10 mm long; coriaceous; without keel; 9–11 -veined. Lemma surface glabrous, or hirsute; hairy between veins. Lemma apex acute. Palea coriaceous; 2-keeled. Palea apex dentate; 2 -fid; pubescent.

FLOWER Lodicules 3; 1.5 mm long; ciliate. Anthers 6; 8 mm long. Stigmas 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: Papuasia.

NOTES Bambuseae. Bor 2002.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.