Agrostis tuvinica

HABIT Perennial. Rhizomes short. Culms 15–55 cm long. Ligule an eciliate membrane; 1–2 mm long. Leaf-blades 1–2(–3.5) mm wide; light green. Leaf-blade surface scabrous. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open, or contracted; lanceolate; 5–13 cm long; 1–3 cm wide. Primary panicle branches ascending. Panicle branches smooth, or scaberulous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; terete.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2–2.5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny; gaping. Lower glume lanceolate; 2–2.5 mm long; 1.1 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1.9–2.4 mm long; 1.2 length of adjacent fertile lemma; membranous; purple; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma oblong; 1.7–2 mm long; hyaline; without keel; 5 -veined. Lemma apex truncate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.33–0.5 way up back of lemma; geniculate; with twisted column. Palea absent or minute.

FLOWER Anthers 3; 0.8–1.2 mm long.

DISTRIBUTION Asia-temperate: Siberia.

NOTES Aveneae. Fl Sib 2005.

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