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.

Aulonemia bogotensis

HABIT Perennial. Rhizomes short; pachymorph. Culms erect, or decumbent, or scandent; 30–110 cm long; 1–2.5 mm diam.; woody. Culm-internodes terete; hollow; 4–10 cm long; distally glabrous. Culm-nodes without obvious supra-nodal ridge. Lateral branches dendroid. Bud complement 1. Branch complement one; solitary. Culm-sheaths persistent; 2.4–6.2 cm long. Culm-sheath blade triangular; deciduous; reflexed; 0.6–3.4 cm long. Leaf-sheaths pubescent. Leaf-sheath oral hairs setose; 2–13 mm long; pale. Ligule an eciliate membrane; 0.5 mm long; pubescent on abaxial surface; truncate. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.05–0.15 cm long; petiole pubescent. Leaf-blades reflexed; lanceolate; 1.4–4.2 cm long; 2–5 mm wide. Leaf-blade venation without cross veins. Leaf-blade surface pubescent; hairy abaxially. Leaf-blade margins cartilaginous; serrulate. Leaf-blade apex abruptly acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; lanceolate; 4–14 cm long; 1–2 cm wide. Panicle axis angular; puberulous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; 1–12 mm long; pubescent.

FERTILE SPIKELETS Spikelets comprising 3–7 fertile florets; with diminished florets at the apex. Spikelets oblong; subterete; 9.7–13 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1–2.3 mm long.

GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 3.5–5.5 mm long; membranous; without keels; 3 -veined. Lower glume primary vein scabrous. Lower glume surface puberulous. Lower glume apex attenuate. Upper glume ovate; 4.8–6.8 mm long; membranous; without keels; 5–7 -veined. Upper glume surface pubescent; hairy above. Upper glume margins ciliate. Upper glume apex acute.

FLORETS Fertile lemma ovate; 3.5–6 mm long; chartaceous; without keel; 7 -veined. Lemma surface puberulous; hairy above. Lemma margins ciliate; hairy above. Lemma apex obtuse. Palea 2.5–5 mm long; 2–4 -veined. Palea keels ciliate; adorned above; with 0.5 of their length adorned. Palea surface puberulous; hairy on back and on flanks; hairy above. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; 0.5–0.9 mm long. Anthers 3; 0.8–2.8 mm long. Stigmas 2.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: western South America.

NOTES Bambuseae. Clarke et al 2001.

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