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.

Parodiolyra lateralis

HABIT Perennial. Culms scandent; 800 cm long; rooting from lower nodes. Culm-internodes hollow; distally glabrous. Culm-nodes swollen; pubescent to bearded. Leaves cauline. Leaf-sheaths pilose; with simple hairs, or reflexed hairs; outer margin glabrous, or hairy. Leaf-sheath auricles erect. Ligule a ciliate membrane; 0.2 mm long. Leaf-blade base broadly rounded to cordate; with a brief petiole-like connection to sheath; petiole 0.1–0.2 cm long. Leaf-blades lanceolate to ovate; 2.5–5 cm long; 0.5–1.3 mm wide. Leaf-blade venation parallel. Leaf-blade surface glabrous to pubescent. Leaf-blade margins ciliate. Leaf-blade apex acuminate (abruptly).

INFLORESCENCE Monoecious; with male and female spikelets in the same inflorescence. Inflorescence a panicle. Peduncle glabrous.

Panicle open; pyramidal. Primary panicle branches spreading; 1.2–3 cm long. Panicle branches straight to flexuous; glabrous to pilose.

Sexes segregated; on bisexual branches; with male below. Spikelets solitary. Fertile spikelets pedicelled. Male spikelets pedicelled. Pedicels filiform; glabrous to pubescent; tip rectangular.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2–2.6 mm long; 1.2 mm wide; falling entire. Rhachilla internodes elongated between glumes and elongated below proximal fertile floret.

GLUMES Glumes similar; subequal in width; exceeding apex of florets; thinner than fertile lemma. Lower glume elliptic; 1 length of upper glume; membranous; without keels; 5–7 -veined. Lower glume lateral veins without connecting veins, or with cross-veins. Lower glume surface glabrous to pilose. Upper glume elliptic; membranous; without keels; 3–5 -veined. Upper glume lateral veins without cross-veins, or with cross-veins. Upper glume surface glabrous to hispid.

FLORETS Fertile florets female. Fertile lemma ovate, or obovate; dorsally compressed; indurate; pallid; shiny; without keel; 7 -veined. Lemma apex obtuse. Palea obovate; indurate; 2 -veined; without keels. Palea surface smooth.

FLOWER Lodicules 3. Anthers 3; 2 mm long; purple. Stigmas 2.

FRUIT Caryopsis ellipsoid; light brown. Hilum linear; 0.5–0.75 length of caryopsis.

MALE Male spikelets distinct from female; 1 flowered; lanceolate; glabrous to hairy. Male spikelet glumes absent. Male spikelet lemma muticous.

DISTRIBUTION South America: Mesoamericana, northern South America, western South America, and Brazil.

NOTES Olyreae. TB.

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