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GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Parodiolyra aratitiyopensis
HABIT Perennial. Culms erect; 30–35 cm long; 1.8 mm diam. Culm-internodes distally glabrous. Culm-nodes brown; pubescent. Leaves cauline. Leaf-sheaths 3.2–6.4 cm long; striately veined; pilose. Ligule an eciliate membrane; 0.3 mm long; glabrous on abaxial surface, or pubescent on abaxial surface; lacerate. Leaf-blade base truncate, or broadly rounded; asymmetrical; with a brief petiole-like connection to sheath; petiole 0.1 cm long. Leaf-blades linear, or lanceolate; 3–9.4 cm long; 7–16 mm wide. Leaf-blade surface scabrous; rough adaxially; pilose; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acute.
INFLORESCENCE Monoecious; with male and female spikelets in the same inflorescence. Inflorescence a panicle; terminal.
Panicle open; oblong, or ovate; 1.1–6 cm long; 0.2–5.6 cm wide. Panicle axis scabrous.
Sexes segregated; on unisexual branches; with male below. Spikelets solitary. Fertile spikelets pedicelled. Male spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic, or obovate; dorsally compressed; 3 mm long; 1.6 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes elongated between glumes and elongated below proximal fertile floret. Rhachilla elongation 0.3 mm long.
GLUMES Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 3 mm long; 1 length of upper glume; chartaceous; without keels; 5 -veined. Lower glume surface scabrous; pilose; hairy below. Lower glume apex acute. Upper glume ovate; 3 mm long; chartaceous; without keels; 7 -veined. Upper glume surface scabrous; pilose; hairy below. Upper glume apex acute.
FLORETS Fertile florets female. Fertile lemma lanceolate; dorsally compressed; 2.5 mm long; 1.2 mm wide; indurate; pallid; shiny; without keel. Lemma surface smooth; glabrous. Lemma apex apiculate; pubescent. Palea apex excavated.
FLOWER Lodicules 3.
MALE Male spikelets distinct from female; 1 flowered; linear; 4.5–5 mm long. Male spikelet glumes absent. Male spikelet lemma 4.5–5 mm long; muticous.
DISTRIBUTION South America: northern South America.
NOTES Olyreae. Grande 2012.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
