GrassBase - The Online World Grass Flora


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

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

Arundinella flavida

HABIT Perennial. Rhizomes elongated; scaly. Culms erect; 50–120 cm long; 2–3 mm diam. Culm-nodes glabrous, or pubescent. Lateral branches fastigiate; arising from lower culm. Leaf-sheaths glabrous on surface, or hispid; with tubercle-based hairs; outer margin hairy. Ligule an eciliate membrane; 0.2 mm long. Leaf-blades erect, or ascending; (6–)15–30 cm long; 6–10 mm wide; coriaceous; stiff. Leaf-blade midrib indistinct. Leaf-blade surface smooth; glabrous; hairless except near base. Leaf-blade margins ciliate; hairy at base. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic, or oblong; dense; 9–15(–27) cm long. Primary panicle branches ascending; simple, or sparsely divided; 1.5–7 cm long. Panicle axis scabrous.

Fertile spikelets pedicelled. Pedicels scaberulous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.25 length of lemma.

GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 3.1–3.7 mm long; 0.8–0.9 length of upper glume; membranous; light brown; 1-keeled; 3(–5) -veined. Lower glume lateral veins ribbed. Lower glume surface setose; hairy on veins; with tubercle-based hairs. Lower glume apex acuminate. Upper glume lanceolate; 3.8–4.1 mm long; 2 length of adjacent fertile lemma; 1 length of spikelet; membranous; light brown; 1-keeled; 3(–5) -veined. Upper glume lateral veins ribbed. Upper glume surface setose; hairy on veins; with tubercle-based hairs. Upper glume apex acuminate.

FLORETS Basal sterile florets male; with palea; persisting on inflorescence. Lemma of lower sterile floret similar to upper glume; lanceolate; 3.1–3.7 mm long; membranous; 1-keeled; 3 -veined; acute. Fertile lemma lanceolate; 2–2.5 mm long; coriaceous; without keel. Lemma margins involute; interlocking with palea keels. Lemma apex entire; awned; 1 -awned. Principal lemma awn geniculate; 2.2–3 mm long overall; with twisted column. Palea coriaceous; 2 -veined.

FLOWER Lodicules 2.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China.

NOTES Arundinelleae. Fl China 2003.

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