Ampelocalamus actinotrichus

HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 150 cm long; woody. Culm-internodes terete; hollow. Lateral branches dendroid. Leaf-sheath oral hairs setose; spreading; 10–15 mm long. Leaf-sheath auricles erect; 1 mm long; obtuse. Ligule an eciliate membrane, or a ciliolate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 10–18 cm long; 10–25 mm wide; light green. Leaf-blade surface pilose; sparsely hairy; hairy on both sides. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; bearing few spikelets.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 5–7 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 40–60 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 5–7 mm long; eventually visible between lemmas.

GLUMES Glumes two; persistent; similar; shorter than spikelet. Lower glume lanceolate; 5 mm long; chartaceous; without keels. Lower glume apex acuminate. Upper glume lanceolate; 7 mm long; chartaceous; without keels. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; 11 mm long; 2.5 mm wide; chartaceous; keeled; lightly keeled; 7 -veined. Lemma midvein scaberulous. Lemma apex acuminate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3. Anthers 3; 6 mm long. Stigmas 3.

FRUIT Caryopsis with adherent pericarp; apex unappendaged.

DISTRIBUTION Asia-temperate: China.

NOTES Arundinarieae. Merrill & Chun 2002.

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