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 luetzelburgii

HABIT Perennial; caespitose. Rhizomes short. Culms geniculately ascending, or scandent; 70–160 cm long. Culm-internodes hollow; distally glabrous. Culm-nodes swollen; black; glabrous. Leaves cauline. Leaf-sheaths pilose. Ligule a ciliolate membrane; 0.4 mm long. Leaf-blade base broadly rounded; asymmetrical; with a brief petiole-like connection to sheath; petiole 0.2 cm long; petiole pilose. Leaf-blades lanceolate, or ovate; 8–11 cm long; 16–31 mm wide; stiff; glaucous. Leaf-blade surface scabrous; glabrous, or pubescent; hairy abaxially. Leaf-blade margins ciliate; hairy at base. Leaf-blade apex obtuse.

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

Panicle open; pyramidal; 5–8 cm long; 4.5–8 cm wide. Primary panicle branches whorled at lower nodes. Panicle branches scaberulous; pubescent in axils.

Sexes segregated; on unisexual branches and bisexual branches; with male below. Spikelets solitary. Fertile spikelets pedicelled. Male spikelets pedicelled; 2–3 in a cluster. Pedicels (female) filiform; smooth; pubescent; tip rectangular.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic, or ovate; dorsally compressed; 3–3.6 mm long; 1.5–1.7 mm wide; breaking up at maturity; disarticulating below each fertile floret. 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 ovate; clasping; 3–3.6 mm long; 1 length of upper glume; chartaceous; without keels; 7–9 -veined. Lower glume surface scabrous; glabrous, or pubescent; hairy at apex. Lower glume apex acute. Upper glume ovate; 3–3.6 mm long; chartaceous; without keels; 5–7 -veined. Upper glume surface scabrous; glabrous, or pubescent; hairy above. Upper glume apex acute.

FLORETS Fertile florets female. Fertile lemma lanceolate; dorsally compressed; 1.9–2.5 mm long; 1–1.2 mm wide; indurate; pallid; shiny; without keel; 5 -veined. Lemma surface smooth; glabrous. Lemma apex acute; papillose. Palea obovate; indurate; 2 -veined; without keels. Palea surface smooth. Palea apex excavated.

FLOWER Lodicules 3. Anthers 3; 3.2 mm long. Stigmas 2. Ovary glabrous.

FRUIT Caryopsis orbicular; 1.4 mm long; light brown. Hilum linear; 0.5–0.75 length of caryopsis.

MALE Male spikelets distinct from female; 1 flowered; lanceolate; 4.2–5.1 mm long; glabrous to hairy. Male spikelet glumes absent. Male spikelet lemma 3–4 -veined; muticous.

DISTRIBUTION South America: northern South America and Brazil.

NOTES Olyreae. Sod & Zuol.

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