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.

Lithachne pinetii

HABIT Perennial; caespitose. Culms slender; 10–20 cm long. Leaves cauline. Ligule a ciliolate membrane; 0.1 mm long. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades reflexed; lanceolate, or ovate; 1–1.5 cm long; 3–7 mm wide. Leaf-blade apex acute.

INFLORESCENCE Monoecious; with male and female spikelets in different inflorescences. Inflorescence comprising only a few spikelets; comprising 1 fertile spikelets; axillary; exserted, or embraced at base by subtending leaf. Peduncle flattened.

Spikelets solitary. Fertile spikelets sessile. Male spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets cuneate; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; truncate.

GLUMES Glumes deciduous; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 4–5 mm long; 1 length of upper glume; herbaceous; without keels; 9 -veined. Lower glume apex caudate. Upper glume ovate; 4–5 mm long; 1.3–1.6 length of adjacent fertile lemma; herbaceous; without keels; 9 -veined. Upper glume apex caudate.

FLORETS Fertile florets female. Fertile lemma obovate; laterally compressed; gibbous; triangular in profile; 3 mm long; indurate; pallid; shiny; without keel. Lemma margins involute. Lemma apex truncate. Palea indurate.

FLOWER Lodicules 3. Anthers 3.

FRUIT Caryopsis with adherent pericarp.

MALE Male inflorescence terminal; unlike female; of few spikelets (2–3). Male spikelets distinct from female; 1 flowered; linear, or lanceolate; 3–4 mm long. Male spikelet glumes absent. Male spikelet lemma 3 -veined; muticous.

DISTRIBUTION South America: Caribbean.

NOTES Olyreae. Man W Indies.

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