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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 bulbosa

HABIT Perennial; caespitose. Butt sheaths thickened and forming a bulb. Culms erect; 20–40 cm long. Leaves mostly basal. Leaf-sheaths open for most of their length. Ligule an eciliate membrane. Leaf-blades involute; 3–6 cm long; 0.5 mm wide. Leaf-blade surface scaberulous; rough adaxially, or on both sides. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong; 8–14 cm long. Primary panicle branches spreading; 4–7 -nate. Panicle branches capillary; smooth.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 4–6 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 4–7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

GLUMES Glumes persistent; dissimilar; shorter than spikelet. Lower glume elliptic, or ovate; 1–1.5 mm long; 0.66–0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume elliptic, or ovate; 1.5–2 mm long; 0.75 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex obtuse.

FLORETS Fertile florets divergent. Fertile lemma elliptic, or oblong; 2–2.75 mm long; membranous; much thinner above; much thinner on margins; mid-green and purple; suffused with last colour; without keel; 5 -veined. Lemma lateral veins obscure; stopping well short of apex. Lemma surface glabrous, or puberulous; hairy on veins. Lemma apex truncate. Palea 1 length of lemma; 2 -veined. Palea keels scabrous; adorned all along, or above; with 0.5–1 of their length adorned. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 1.5 mm long. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: Caucasus and western Asia.

NOTES Poeae. Fl Turk 1993.

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