Calamagrostis schmidtiana

HABIT Perennial; caespitose; clumped densely. Rhizomes short. Culms erect; 30–50 cm long; 3–4 -noded; with 0.5 of their length below uppermost node. Culm-internodes smooth; distally glabrous. Culm-nodes glabrous. Leaf-sheaths smooth. Leaf-sheath oral hairs lacking. Ligule an eciliate membrane; 2.5–5 mm long; scaberulous on abaxial surface. Leaf-blades erect; flat, or conduplicate; 5–15 cm long; 1–3 mm wide. Leaf-blade surface scabrous; rough on both sides.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong; 8–12 cm long. 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; 3–4 mm long; 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; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume surface scabrous. Lower glume apex acute. Upper glume lanceolate; membranous; 1-keeled. Upper glume surface scabrous. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 2.5–3.2 mm long; membranous; without keel; 5 -veined. Lemma apex awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; straight, or geniculate; 1.2–1.8 mm long overall; 0.8–1.2 length of lemma; not or scarcely exserted from spikelet. Palea present; 0.6–0.8 mm long; 0.3 length of lemma. 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.