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Descriptions

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

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

Pseudosasa maculifera

HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 200–400 cm long; 5–15 mm diam.; woody. Culm-internodes terete; 21–31 cm long; yellow, or light green; distally mealy. Culm-nodes with distinct supra-nodal ridge. Lateral branches dendroid. Branch complement one, or two, or three. Culm-sheaths green and brown; concolorous, or distinctly mottled with last colour; glabrous, or hispid; with tawny hairs; hairy on margins; without auricles; glabrous on shoulders, or ciliate on shoulders. Culm-sheath ligule 1.5–4 mm high; green. Culm-sheath blade lanceolate, or triangular; erect, or reflexed. Leaves cauline; 2–4 per branch. Leaf-sheaths glabrous on surface; outer margin hairy. Leaf-sheath oral hairs setose; spreading. Leaf-sheath auricles erect, or falcate. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate, or elliptic; 7–14 cm long; 12–22 mm wide. Leaf-blade venation with 10–18 secondary veins. Leaf-blade surface scabrous; pubescent; sparsely hairy; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence comprising only a few spikelets; comprising 1–2 fertile spikelets.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 5–7 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 30–50 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 6 mm long; pubescent.

GLUMES Glumes two; persistent; similar; shorter than spikelet. Lower glume lanceolate; chartaceous; without keels. Upper glume lanceolate; chartaceous; without keels.

FLORETS Fertile lemma ovate; chartaceous; without keel. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3. Anthers 3. Stigmas 3. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp; oblong; 9–13 mm long.

DISTRIBUTION Asia-temperate: China.

NOTES Arundinarieae. Fl China 2006.

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