GrassBase - The Online World Grass Flora


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

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

Danthoniopsis stocksii

HABIT Perennial. Rhizomes elongated; woody. Butt sheaths pubescent. Culms geniculately ascending; 40–80 cm long. Ligule a fringe of hairs. Leaf-blade base broadly rounded. Leaf-blades lanceolate; 1–8 cm long; 3–4.5 mm wide; stiff; glaucous. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade margins scaberulous. Leaf-blade apex attenuate; pungent.

INFLORESCENCE Inflorescence a panicle. Peduncle scaberulous above.

Panicle open; ovate; 3–10 cm long; 2–4 cm wide. Primary panicle branches bearing 1–3 fertile spikelets on each lower branch. Panicle branches capillary.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels unequal.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 10–14 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; bearded; truncate.

GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 6–9.5 mm long; 0.75 length of upper glume; chartaceous; without keels; 3 -veined. Lower glume apex acute. Upper glume lanceolate; 8–11.5 mm long; 0.8 length of spikelet; chartaceous; without keels; 3 -veined. Upper glume apex caudate.

FLORETS Basal sterile florets male; with palea; separately deciduous. Lemma of lower sterile floret similar to upper glume; lanceolate; 9–12.5 mm long; membranous; 5 -veined; acuminate. Palea of lower sterile floret pubescent; adorned on keels. Fertile lemma oblong; 6–8.5 mm long; coriaceous; without keel; 5 -veined. Lemma surface with a transverse row of hair tufts; bearing 8 hair tufts in all. Lemma margins involute; interlocking with palea keels. Lemma apex lobed; 2 -fid; with lobes 3–4 mm long; incised 0.5 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; flat below; 12–16 mm long overall; with twisted column. Column of lemma awn 4 mm long. Palea 2 -veined. Palea keels contiguous above a sulcus; thickened; winged; narrowly winged.

FLOWER Lodicules 2; cuneate; fleshy. Anthers 3.

FRUIT Caryopsis with adherent pericarp.

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

NOTES Arundinelleae. Fl Pak.

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