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Descriptions

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

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

Puccinellia koeieana

HABIT Perennial; culms solitary, or caespitose; clumped loosely. Basal innovations intravaginal. Culms erect; 15–35 cm long. Culm-internodes glaucous. Leaf-sheaths open for most of their length. Ligule an eciliate membrane; 2–3.5 mm long. Leaf-blades involute; 3–9 cm long; 0.5–2 mm wide; glaucous. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; elliptic; 5–10 cm long; 2 cm wide. Primary panicle branches 3–6 -nate; 2–3.5 cm long. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 5–6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5–6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.

GLUMES Glumes persistent; dissimilar; shorter than spikelet. Lower glume lanceolate, or ovate; 1.3–1.6 mm long; 0.6–0.8 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate, or ovate; 1.6–2.5 mm long; 0.75–1 length of adjacent fertile lemma; membranous; without keels; 1–3 -veined. Upper glume lateral veins absent, or obscure. Upper glume margins ciliolate. Upper glume apex erose; obtuse.

FLORETS Fertile lemma oblong, or ovate; 2–2.5 mm long; membranous; much thinner above; purple and yellow; bordered with last colour and tipped with last colour; without keel; 5 -veined. Lemma lateral veins obscure; stopping well short of apex. Lemma surface pubescent; hairy below. Lemma apex obtuse; muticous, or mucronate. Palea 1 length of lemma; 2 -veined. Palea keels scabrous; adorned above; with 0.33 of their length adorned. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 1.3–1.5 mm long. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: western Asia and China.

NOTES Poeae. Fl Turk 1993.

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