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Descriptions

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

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

Aulonemia fuentesii

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms 200–250 cm long; 7 mm diam.; woody. Culm-internodes terete; hollow; yellow and mid-green; mottled; striate; distally glabrous. Lateral branches dendroid. Leaf-sheaths striately veined; glabrous on surface; outer margin hairy. Leaf-sheath oral hairs setose; curly; 8–15 mm long; dark. Leaf-sheath auricles erect; 4–8 mm long. Ligule absent. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.2–0.3 cm long. Leaf-blades reflexed; ovate; 13–18 cm long; 47–57 mm wide. Leaf-blade surface glabrous. Leaf-blade margins cartilaginous; scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle. Peduncle 20 cm long; glabrous.

Panicle open; ovate; effuse; 45 cm long; 30 cm wide. Primary panicle branches ascending. Panicle branches capillary.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 20–40 mm long.

FERTILE SPIKELETS Spikelets comprising 7–11 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 23–40 mm long; 4–5 mm wide; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes several; 3 empty glumes; persistent; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 2–3.5 mm long; membranous; without keels; 1–3 -veined. Lower glume lateral veins absent, or obscure. Lower glume apex acute. Upper glume ovate; 6–7 mm long; membranous; without keels; 5–8 -veined. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 8–9 mm long; herbaceous; without keel; 7–11 -veined. Lemma surface puberulous; hairy below. Lemma apex acute. Palea 8–9.5 mm long. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; 1.3–1.5 mm long; veined; ciliate. Anthers 3. Stigmas 2.

DISTRIBUTION South America: western South America.

NOTES Bambuseae. Judz. et al 2012.

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