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.

Yakirra foliolosa

HABIT Annual. Culms geniculately ascending; 13–30 cm long. Leaf-sheaths hispid. Ligule a fringe of hairs. Leaf-blades 2–6 cm long; 2–4 mm wide. Leaf-blade surface hispid. Leaf-blade apex abruptly acute.

INFLORESCENCE Inflorescence a panicle; terminal and axillary; shorter than basal leaves; embraced at base by subtending leaf.

Panicle contracted; oblong; 1–3 cm long; bearing few spikelets. Primary panicle branches simple.

Spikelets solitary, or in pairs. Fertile spikelets pedicelled; 1–2 in the cluster. Pedicels angular; unequal.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 5 mm long; falling entire; readily shedding fertile florets. Floret callus evident (obliquely attached to truncate floret and deciduous); 0.1–0.2 mm long; winged; with free apical wings; these appendages 0.2–0.3 mm long; truncate.

GLUMES Glumes similar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.7–0.8 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex caudate. Upper glume ovate; 1 length of spikelet; coriaceous; without keels; 5–7 -veined. Upper glume apex caudate.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; coriaceous; 5 -veined; caudate. Fertile lemma ovate; 2 mm long; indurate; without keel; 7 -veined. Lemma margins involute. Lemma apex obtuse. Palea involute; indurate.

DISTRIBUTION Asia-tropical: India and Indo-China.

NOTES Paniceae. WDC.

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