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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Stipa klimesii

HABIT Perennial; caespitose; clumped densely. Culms 15–48 cm long; 1(–2) -noded. Leaf-sheaths glabrous on surface, or puberulous; outer margin glabrous. Ligule a ciliolate membrane; (1.5–)2.5–8(–9) mm long; pubescent on abaxial surface; obtuse, or acute. Leaf-blades filiform; involute; 5–10 cm long. Leaf-blade surface scabrous; rough adaxially; pubescent; hairy adaxially.

INFLORESCENCE Inflorescence a panicle; comprising (5–)10–20 fertile spikelets; exserted.

Panicle contracted; linear; (5–)8–20 cm long; bearing few spikelets. Primary panicle branches appressed; 1–2 -nate; 2–5 cm long. Panicle branches hispidulous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 12.5–16 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1.4–2 mm long; pubescent; acute; with elliptic scar. Floret callus hairs 0.6–1 mm long.

GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; (12.5–)14–16(–18) mm long; 1 length of upper glume; membranous; light green, or purple; without keels. Lower glume apex acuminate. Upper glume lanceolate; (11.5–)13–15.5(–17.5) mm long; membranous; much thinner above; light green, or purple; without keels. Upper glume primary vein smooth, or scabrous. Upper glume apex acuminate.

FLORETS Fertile lemma elliptic; subterete; (7–)8.3–9.5(–10.5) mm long; 0.6–0.8 mm wide; coriaceous; without keel. Lemma surface scabrous; pubescent. Lemma margins convolute; covering most of palea. Lemma hairs 0.5–0.7 mm long. Lemma apex surmounted by a ring of hairs; with this appendage 0.5–1(–1.3) mm long; awned; 1 -awned. Principal lemma awn bigeniculate; (25–)30–45(–52) mm long overall; with twisted column. Middle segment of lemma awn 5–8 mm long; hirtellous. Column of lemma awn hirtellous; with (1.3–)1.5–2(–2.8) mm long hairs.

DISTRIBUTION Asia-temperate: China. Asia-tropical: India.

NOTES Stipeae. Nobis 2015.

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