Yushania glandulosa

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 200–300 cm long; 4–5 mm diam.; woody; 12–16 -noded. Culm-internodes terete; solid; 8–23 cm long; scaberulous. Culm-nodes swollen. Lateral branches dendroid; erect, or ascending. Branch complement one, or two, or three. Culm-sheaths persistent; 8.5–9 cm long; 5–7 times as long as wide; coriaceous; glabrous; glabrous on margins, or hairy on margins; without auricles; glabrous on shoulders. Culm-sheath ligule 0.5 mm high; entire, or ciliolate. Culm-sheath blade lanceolate; erect, or reflexed; 1.5–2 cm long; 1.5 mm wide; glabrous on surface. Leaves 1–3 per branch. Leaf-sheaths 4–9 cm long; glabrous on surface. Leaf-sheath oral hairs lacking. Leaf-sheath auricles absent. Ligule an eciliate membrane; 0.5–0.8 mm long; lacerate. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.1–1 cm long; petiole glabrous. Leaf-blades lanceolate; 8–19 cm long; 18–50 mm wide. Leaf-blade venation with 8–20 secondary veins; with distinct cross veins. Leaf-blade surface glabrous. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence a panicle; comprising 13–33 fertile spikelets.

Panicle open; ovate; 6–12 cm long.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 5–20 mm long; glabrous.

FERTILE SPIKELETS Spikelets comprising 3–5 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 12–25 mm long; 1.5–2 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 3–3.5 mm long; pilose.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 1.2–2 mm long; herbaceous; 1-keeled; 1–3 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent, or obscure. Lower glume apex acuminate. Upper glume lanceolate; 3.5–5 mm long; herbaceous; 1-keeled; 5 -veined. Upper glume primary vein scabrous. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; 4.5–8 mm long; herbaceous; without keel; 5–7 -veined. Lemma surface pubescent; hairy at base. Lemma apex attenuate. Palea 1 length of lemma. Palea keels ciliate. Palea surface pubescent; hairy on back. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; 1–1.5 mm long; membranous; ciliate. Anthers 3; 3.5–4 mm long; yellow. Stigmas 2. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp; fusiform; apex unappendaged. Embryo 0.2 length of caryopsis. Hilum linear.

DISTRIBUTION Asia-temperate: China.

NOTES Arundinarieae. Hsueh & Yi 2002.

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