GrassBase - The Online World Grass Flora

Descriptions

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

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

Stipa dasyvaginata

HABIT Perennial; caespitose. Culms 25–50 cm long. Culm-internodes distally pubescent. Leaf-sheaths pubescent. Ligule a ciliolate membrane; 2.5–5 mm long on basal shoots. Leaf-blades 1–2 mm wide. Leaf-blade surface ribbed; scabrous; glabrous.

INFLORESCENCE Inflorescence a panicle. Peduncle pubescent above.

Panicle contracted; linear.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 45–70 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; acute.

GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; without keels. Lower glume apex acuminate. Upper glume lanceolate; 45–70 mm long; membranous; without keels. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; subterete; 20–22 mm long; coriaceous; without keel; 5 -veined. Lemma surface pubescent; hairy all along; hairy between veins. Lemma margins convolute; covering most of palea. Lemma apex awned; 1 -awned. Principal lemma awn bigeniculate; 350 mm long overall; with twisted column; limb plumose. Palea without keels.

FLOWER Lodicules 3. Anthers 3. Stigmas 2. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp; fusiform. Hilum linear.

DISTRIBUTION Europe: southwestern.

NOTES Stipeae. Martinovsky 1995.

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