Calamagrostis sichotensis

HABIT Perennial. Rhizomes elongated. Culms erect; slender; 30–50 cm long; 3–4 -noded; with 0.4 of their length below uppermost node. Culm-internodes smooth; distally pilose. Leaf-sheath oral hairs pubescent. Ligule an eciliate membrane, or a ciliolate membrane; 3–4.5 mm long; scaberulous on abaxial surface, or pubescent on abaxial surface. Leaf-blades flat; 1.5–3 mm wide; mid-green. Leaf-blade surface scabrous; rough abaxially; pubescent; densely hairy; hairy adaxially.

INFLORESCENCE Inflorescence a panicle. Peduncle pilose above.

Panicle open; oblong; loose; 6–10 cm long; bearing few spikelets. Panicle branches scaberulous; rough throughout.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.8–0.9 length of lemma.

GLUMES Glumes persistent; similar; exceeding apex of florets. Lower glume lanceolate; 3.4–4 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume surface asperulous. Lower glume apex acuminate. Upper glume lanceolate; 3.4–4 mm long; 1.2–1.5 length of adjacent fertile lemma; membranous; 1-keeled. Upper glume surface asperulous. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; 2.6–3 mm long; membranous; without keel; 5 -veined. Lemma apex awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; 1.3–1.7 mm long overall; 1.2 length of lemma; not or scarcely exserted from spikelet. Rhachilla extension pilose.

FLOWER Lodicules 2. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.

DISTRIBUTION Asia-temperate: Soviet far east.

NOTES Aveneae. Tzvelev 2011.

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