Stipa austromongolica

HABIT Perennial. Culms 14–26 cm long. Leaf-sheaths antrorsely scabrous; outer margin glabrous, or hairy. Ligule a ciliolate membrane; 0.5–2(–3) mm long. Leaf-blades filiform; involute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 27–34 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 25–32 mm long; 1 length of upper glume; membranous; without keels. Lower glume apex acuminate. Upper glume lanceolate; 25–32 mm long; membranous; without keels. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; subterete; (7.7–)9–11.3 mm long; coriaceous; without keel; 5 -veined. Lemma surface pubescent; hairy all along; hairy in lines (7 lines). Lemma margins convolute; covering most of palea. Lemma hairs 0.7–0.9 mm long. Lemma apex surmounted by a ring of hairs; with this appendage (0.1–)0.3–1(–1.5) mm long; awned; 1 -awned. Principal lemma awn geniculate; (69–)75–110(–117) mm long overall; with (53–)65–90(–96) mm long limb; with twisted column; limb plumose; with (4–)4.5–5(–5.3) mm long hairs; glabrescent towards tip. Column of lemma awn 14–21 mm long; scabrous; pubescent, or ciliate; with (0.1–)0.5–2.5(–3) mm long hairs.

FLOWER Anthers 3; 3.5–4 mm long.

DISTRIBUTION Asia-temperate: Mongolia.

NOTES Stipeae. Nobis 2015.

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