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.

Myriocladus grandifolius

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 200–300 cm long. Culm-internodes terete. Lateral branches sparse. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs ciliate. Ligule an eciliate membrane; 1 mm long; truncate. Leaf-blade base cordate. Leaf-blades ovate; 26 cm long; 120 mm wide; coriaceous. Leaf-blade margins smooth, or scaberulous. Leaf-blade apex acute.

INFLORESCENCE Inflorescence composed of racemes.

Racemes numerous; borne along a central axis; ascending, or spreading; unilateral; 4–7 cm long. Central inflorescence axis 68 cm long; pubescent. Rhachis pubescent on surface.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 2 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5–7 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes elongated below proximal fertile floret. Rhachilla elongation 0.5 mm long; scabrous. Rhachilla internodes scaberulous. Floret callus brief.

GLUMES Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume linear. Lower glume surface pubescent. Lower glume apex attenuate. Upper glume lanceolate; 3–4 mm long; membranous; without keels. Upper glume surface pubescent. Upper glume apex acute; awned; 1 -awned. Upper glume awn 1–2 mm long.

FLORETS Basal sterile florets barren; without significant palea; persisting on inflorescence. Lemma of lower sterile floret similar to upper glume; ovate; 4.5 mm long; membranous; setaceously attenuate. Fertile lemma elliptic; 5.5–5.7 mm long; coriaceous; without keel. Lemma margins ciliolate. Lemma apex acute; pubescent; muticous, or awned; 1 -awned. Principal lemma awn 0.5 mm long overall. Palea 3 mm long. Palea surface pubescent; hairy on back. Palea apex pubescent; with excurrent keel veins. Apical sterile florets 1 in number; rudimentary.

FLOWER Lodicules 3. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: northern South America.

NOTES Bambuseae. Swallen 1996.

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