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Descriptions

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

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

Chusquea fernandeziana

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms arching; 300 cm long; woody. Culm-internodes terete; solid. Lateral branches dendroid. Branch complement many; in a clump; with subequal branches; thinner than stem. Ligule an eciliate membrane. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades linear, or lanceolate; 5–15 cm long; 5–13 mm wide; coriaceous; stiff. Leaf-blade midrib indistinct. Leaf-blade venation without cross veins. Leaf-blade margins cartilaginous. Leaf-blade apex attenuate; filiform.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 8–10 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 7–9 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 3–5 mm long; membranous; without keels. Lower glume apex setaceously attenuate. Upper glume lanceolate; 4 mm long; 0.5 length of adjacent fertile lemma; membranous; without keels. Upper glume apex setaceously attenuate.

FLORETS Basal sterile florets barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret lanceolate; 4 mm long; 0.5 length of fertile lemma; chartaceous; 1 -veined; without lateral veins; acute; awned. Awn of lower sterile floret 1.5–2 mm long. Lemma of upper sterile floret lanceolate; 5–6 mm long; chartaceous; acute; awned. Awn of upper sterile floret 1 mm long. Fertile lemma ovate; 7–9 mm long; coriaceous; without keel; 7 -veined. Lemma apex acuminate; mucronate.

FLOWER Lodicules 3; membranous. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; apex unappendaged.

DISTRIBUTION South America: southern South America.

NOTES Bambuseae. WDC 2001.

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