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.

Cinna latifolia

HABIT Perennial. Rhizomes short. Culms 8–190 cm long; 1.8–3 mm diam.; 4–9 -noded. Ligule an eciliate membrane; 1.3–8 mm long; obtuse. Leaf-blades 15–25 cm long; 1–20 mm wide. Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle. Peduncle antrorsely scabrous above.

Panicle open; lanceolate, or ovate; dense, or loose; nodding; 3–46 cm long; 0.5–20 cm wide. Primary panicle branches ascending, or spreading; 3–6 -nate; whorled at most nodes; 4–15 cm long. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels cuneate; 1–1.5 mm long.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension, or with a barren rhachilla extension. Spikelets elliptic; laterally compressed; (2–)2.5–4(–5) mm long; falling entire. Rhachilla internodes elongated below proximal fertile floret. Rhachilla elongation 0.1–0.45 mm long.

GLUMES Glumes similar; reaching apex of florets, or exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; (1.8–)2.5–4(–4.7) mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex acute. Upper glume lanceolate; (1.9–)2.5–4(–5) mm long; 1–1.1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume surface asperulous. Upper glume apex acute.

FLORETS Fertile lemma ovate; 1.8–3.8 mm long; membranous; keeled; 3 -veined. Lemma midvein scaberulous. Lemma lateral veins obscure. Lemma apex acute; mucronate, or awned; 1 -awned. Principal lemma awn subapical; 0.2–2.5 mm long overall; not or scarcely exserted from spikelet. Palea 1.8–3.4 mm long; 1 -veined, or 2 -veined; 1-keeled, or 2-keeled. Palea keels approximate. Rhachilla extension 0.1–1.3 mm long.

FLOWER Anthers 1; 0.4–1.1 mm long.

FRUIT Caryopsis with adherent pericarp; oblong; 1.8–2.8 mm long. Endosperm liquid.

DISTRIBUTION Europe: northern and eastern. Asia-temperate: Siberia, Soviet far east, Caucasus, China, Mongolia, and eastern Asia. North America: Subarctic, western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, and southeast USA.

NOTES Aveneae. Brandenberg 2000.

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