Trisetum kangdingense

HABIT Perennial; culms solitary. Rhizomes elongated. Culms erect, or geniculately ascending; 40–50 cm long; 2–3 mm diam.; 2–3 -noded. Leaf-sheaths loose; longer than adjacent culm internode; pilose. Ligule a ciliolate membrane; 1.5–3 mm long; truncate. Leaf-blades 7–10 cm long; 4–5 mm wide. Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins scaberulous.

INFLORESCENCE Inflorescence a panicle. Peduncle pubescent above.

Panicle contracted; elliptic; interrupted; 12–15 cm long. Primary panicle branches appressed, or ascending; 6–8 cm long. Panicle branches glabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 5.5–6 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pilose; with 1 mm long hairs.

GLUMES Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate; 5 mm long; 0.8 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume apex acuminate. Upper glume elliptic, or oblong; 5.7–5.9 mm long; 1.1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma lanceolate, or oblong; 5–5.3 mm long; membranous; shiny; keeled; 5 -veined. Lemma surface scabrous. Lemma apex entire; awned; 1 -awned. Principal lemma awn dorsal; arising 0.75 way up back of lemma; straight; 3.2–3.4 mm long overall. Palea gaping; hyaline. Palea keels scaberulous.

FLOWER Anthers 3; 1–1.1 mm long.

DISTRIBUTION Asia-temperate: China.

NOTES Aveneae. Fl China 2005.

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