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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.
Puccinellia sublaevis
HABIT Perennial; caespitose; clumped loosely. Cataphylls inconspicuous. Culms erect, or geniculately ascending; 12–25 cm long. Leaf-sheaths open for most of their length; smooth. Ligule an eciliate membrane; 2 mm long. Leaf-blades flat, or involute; 1–2 mm wide. Leaf-blade surface smooth.
INFLORESCENCE Inflorescence a panicle.
Panicle open; ovate; 4–10 cm long. Primary panicle branches ascending; simple. Panicle branches smooth.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 2–4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed slightly; 3–8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
GLUMES Glumes persistent; shorter than spikelet. Lower glume elliptic; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume elliptic; 0.75 length of adjacent fertile lemma; membranous; much thinner above; without keels; 3 -veined. Upper glume apex obtuse.
FLORETS Fertile lemma oblong; 2.7–3.5 mm long; membranous; much thinner above; without keel; 5 -veined. Lemma lateral veins stopping well short of apex. Lemma apex obtuse. Palea 2 -veined. Palea keels smooth. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Anthers 3; 0.5–0.9 mm long; purple. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp. Hilum punctiform.
DISTRIBUTION Asia-temperate: Soviet far east.
NOTES Poeae. Holmb 1997.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.