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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Arundinella parviflora

HABIT Perennial. Rhizomes short. Culms erect; 60–120(–200) cm long; 2–4 mm diam. Culm-internodes distally glabrous. Culm-nodes pubescent. Lateral branches sparse. Leaf-sheaths glabrous on surface. Ligule a ciliolate membrane. Leaf-blades linear, or lanceolate; 17–25 cm long; 8 mm wide. Leaf-blade surface pilose; with tubercle-based hairs. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong; 16–32 cm long; 2–4 cm wide. Panicle axis scaberulous. Panicle branches angular; scaberulous; glabrous.

Spikelets solitary, or in pairs. Fertile spikelets pedicelled. Pedicels 1–3 mm long.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 2–2.5(–2.7) mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose; obtuse. Floret callus hairs 0.6 mm long.

GLUMES Glumes persistent; dissimilar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 1.9–2.7 mm long; 0.75–1 length of upper glume; membranous; purple; 1-keeled; 3–5 -veined. Lower glume apex acuminate. Upper glume ovate; 2–2.5(–2.7) mm long; membranous; purple; 1-keeled; 5 -veined. Upper glume apex acute.

FLORETS Basal sterile florets male; with palea; persisting on inflorescence. Lemma of lower sterile floret similar to upper glume; ovate; 2.2–2.6 mm long; chartaceous; 1-keeled; 5 -veined; acute; mucronate. Fertile lemma lanceolate; 1.1–1.8 mm long; coriaceous; without keel; 5 -veined. Lemma lateral veins obscure. Lemma surface asperulous. Lemma margins involute; interlocking with palea keels. Lemma apex awned; 1 -awned. Principal lemma awn geniculate; 2.4–2.9 mm long overall; with twisted column; limb scaberulous. Column of lemma awn 0.7–1.1 mm long. Palea coriaceous; 2 -veined. Palea surface asperulous.

FLOWER Lodicules 2; cuneate; fleshy. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: China.

NOTES Arundinelleae. Sun & Hu 1996.

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