Stipa junatovii

HABIT Perennial; caespitose; clumped densely. Culms 15–20 cm long. Culm-internodes distally glabrous. Leaf-sheaths 2–2.5 cm long. Ligule an eciliate membrane; 2 mm long; obtuse. Leaf-blades curved, or flexuous; filiform; convolute; 0.5 mm wide. Leaf-blade surface ribbed.

INFLORESCENCE Inflorescence a panicle; comprising 10–15 fertile spikelets.

Panicle open; linear; 4–5 cm long. Primary panicle branches 0.5–1.5 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 5–6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pilose; acute.

GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; much thinner on margins; light brown; without keels. Lower glume apex acuminate. Upper glume lanceolate; 5–6.5 mm long; membranous; with hyaline margins; light brown; without keels. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; subterete; 4–5 mm long; membranous; dark brown; without keel; 5 -veined. Lemma margins flat; covering most of palea. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; curved; 15–17 mm long overall; with twisted column; limb hirsute. Column of lemma awn 5–6 mm long; hirsute. Palea 1 length of lemma; 2 -veined; without keels. Palea surface pilose; hairy below.

FLOWER Lodicules 3. Anthers 3; anther tip penicillate. Stigmas 2. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp; fusiform. Hilum linear.

DISTRIBUTION Asia-temperate: Siberia, China, and Mongolia.

NOTES Stipeae. Grubov 1995.

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