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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.
Poa subspicata
HABIT Perennial; caespitose. Culms erect, or geniculately ascending; 8–24 cm long; 3–4 -noded. Lateral branches lacking. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 1–2 mm long; erose. Leaf-blades conduplicate; 3–8 cm long; 2–3 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acute.
INFLORESCENCE Inflorescence a panicle.
Panicle spiciform; linear; 3–7 cm long; 0.5–0.8 cm wide. Panicle branches smooth, or scaberulous.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 3–4 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth. Floret callus woolly.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 0.75 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 0.75 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.
FLORETS Fertile lemma ovate; 4–4.3 mm long; membranous; keeled; 5 -veined. Lemma midvein ciliate. Lemma surface pubescent; hairy below; hairy on veins. Lemma apex acute. Palea keels ciliolate.
FLOWER Lodicules 2; membranous. Anthers 3; 0.8–1 mm long.
FRUIT Caryopsis with adherent pericarp. Hilum punctiform.
DISTRIBUTION South America: western South America.
NOTES Poeae. Tovar 1995.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.