GrassBase - The Online World Grass Flora


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

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

Chionochloa lanea

HABIT Perennial; caespitose; clumped densely. Butt sheaths villous; persistent and investing base of culm. Basal innovations intravaginal. Culms erect; 30–60 cm long. Culm-internodes distally glabrous. Culm-nodes glabrous. Leaves mostly basal. Leaf-sheaths 10–15 cm long; hirsute; inner surface glabrous. Leaf-sheath oral hairs bearded; 4 mm long. Ligule a fringe of hairs; 1 mm long. Leaf-blades deciduous at the ligule; conduplicate, or convolute; 20–45 cm long; 1–2 mm wide; coriaceous; stiff. Leaf-blade surface scaberulous; rough adaxially; glabrous; hairless except near base. Leaf-blade margins smooth. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong; 5–10 cm long; bearing few spikelets. Panicle branches pilose; with prominent pulvini.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 14–16 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1 mm long. Floret callus elongated; 0.8 mm long; bearded; disarticulating obliquely. Floret callus hairs 3 mm long.

GLUMES Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume lanceolate; 8–10 mm long; 0.75 length of upper glume; membranous; without keels; 3 -veined. Lower glume apex acute. Upper glume lanceolate; 12–14 mm long; 1.3 length of adjacent fertile lemma; membranous; without keels; 5 -veined. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 9–11 mm long; membranous; without keel; 7 -veined. Lemma margins ciliate. Lemma apex lobed; 2 -fid; with linear lobes, or triangular lobes; with lobes 5–6 mm long; incised 0.5 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; flat below; 10–15 mm long overall; with twisted column. Column of lemma awn 2 mm long. Palea 6 mm long. Palea keels ciliolate. Palea surface pilose; hairy on flanks. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; 1 mm long; membranous; veined; ciliate. Anthers 3.5 mm long.

FRUIT Caryopsis with adherent pericarp; 1.5 mm long. Hilum linear.

DISTRIBUTION Australasia: New Zealand.

NOTES Arundineae. Connor.

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