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.

Thyridolepis mitchelliana

HABIT Perennial; caespitose. Butt sheaths pilose. Culms erect; 30–40 cm long. Culm-internodes distally pubescent. Culm-nodes pubescent. Ligule a fringe of hairs. Leaf-blades 1–6 cm long; 3–5 mm wide; stiff. Leaf-blade midrib indistinct. Leaf-blade margins ciliate. Leaf-blade apex acute, or acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; linear; 2–4 cm long. Primary panicle branches accrescent to a central axis; with lateral stumps on axis. Panicle axis angular; pubescent.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; pubescent; tip discoid.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 5–7 mm long; falling entire. Spikelet callus pubescent. Rhachilla internodes elongated between glumes.

GLUMES Glumes dissimilar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 5–7 mm long; 1 length of spikelet; coriaceous; without keels; 3–5 -veined. Lower glume lateral veins ribbed. Lower glume surface with a longitudinal median groove; fenestrate; glabrous, or pubescent; with a dorsal tuft of hair. Lower glume apex obtuse. Upper glume elliptic; 4.5–6.5 mm long; coriaceous; with membranous margins; without keels; 5–7 -veined. Upper glume lateral veins ribbed. Upper glume surface tuberculate; rough below; glabrous, or pubescent. Upper glume margins tuberculate; setose. Upper glume apex obtuse.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret ovate; 0.8 length of spikelet; herbaceous; 5 -veined; pubescent; hairy between veins; cuspidate. Fertile lemma ovate; 4 mm long; chartaceous; without keel; 3 -veined. Lemma apex cuspidate. Palea 2 -veined.

FLOWER Anthers 3. Stigmas 2.

DISTRIBUTION Australasia: Australia.

NOTES Paniceae. Vickery.

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