Arundinella chassanica

HABIT Perennial; caespitose; clumped loosely. Rhizomes short; scaly. Culms erect, or geniculately ascending; 30–60(–85) cm long; 2–3 mm diam. Leaf-sheaths glabrous on surface, or pilose; with tubercle-based hairs; outer margin hairy. Ligule a ciliolate membrane. Leaf-blades involute; 2–7(–10) mm wide. Leaf-blade surface glabrous.

INFLORESCENCE Inflorescence a panicle; bearing juvenile spikelets at emergence.

Panicle contracted; lanceolate, or elliptic; loose; 2.5–12(–15) cm long. Primary panicle branches ascending.

Spikelets in pairs. Fertile spikelets pedicelled; 2 in the cluster.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 2.5–3.5(–4) mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; dissimilar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; chartaceous; 1-keeled. Lower glume surface glabrous. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; chartaceous; 1-keeled. Upper glume surface glabrous. Upper glume apex acute.

FLORETS Basal sterile florets male; with palea; persisting on inflorescence. Lemma of lower sterile floret similar to upper glume; ovate; 2.5–3.5 mm long; membranous; 1-keeled; acute. Fertile lemma lanceolate, or ovate; 2–3 mm long; coriaceous; without keel; 3 -veined. Lemma lateral veins obscure. Lemma margins involute; interlocking with palea keels. Lemma apex entire; muticous. Palea with auriculate flaps; coriaceous.

FLOWER Anthers 3; (1.3–)1.7–2 mm long.

DISTRIBUTION Asia-temperate: Soviet far east.

NOTES Arundinelleae. Tsvelev & Prob. 2014.

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