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.

Maclurolyra tecta

HABIT Perennial; caespitose. Rhizomes short. Culms geniculately ascending; 20–48 cm long. Culm-internodes solid; retrorsely scabrous. Leaves cauline. Ligule an eciliate membrane; 0.5–1.2 mm long. Leaf-blade base broadly rounded; asymmetrical; with a brief petiole-like connection to sheath. Leaf-blades inverted; oblong; 10–21 cm long; 30–50 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Monoecious; with male and female spikelets in the same inflorescence. Inflorescence composed of racemes; embraced at base by subtending leaf.

Racemes 1; single; 2.5–7 cm long. Rhachis angular.

Sexes mixed. Spikelets in pairs. Fertile spikelets pedicelled; 1 in the cluster. Male spikelets pedicelled; 1 in a cluster. Pedicels filiform (male), or cuneate (female).

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 9.5–11.5 mm long; falling entire.

GLUMES Glumes similar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 9–11.5 mm long; 1 length of upper glume; coriaceous; without keels; 5–6 -veined. Lower glume lateral veins with cross-veins. Lower glume apex acute. Upper glume ovate; 9.5–11 mm long; 1 length of adjacent fertile lemma; coriaceous; without keels; 5–7 -veined. Upper glume lateral veins with cross-veins. Upper glume apex acute.

FLORETS Fertile florets female. Fertile lemma lanceolate; 9.7–11 mm long; indurate; without keel; 5–8 -veined. Lemma surface pilose. Lemma margins convolute; covering most of palea. Lemma apex acuminate. Palea tightly convolute around flower; 0.9 length of lemma; indurate; 2–4 -veined; without keels. Palea surface pilose.

FLOWER Lodicules 3; oblong; 0.7–1 mm long; veined. Anthers 3; 1–1.5 mm long. Stigmas 2; papillose.

MALE Male spikelets distinct from female; 1 flowered; separately deciduous; lanceolate; 4–5.25 mm long; glabrous. Male spikelet glumes absent. Male spikelet lemma 7(–10) -veined; muticous.

DISTRIBUTION South America: Mesoamericana.

NOTES Olyreae. WDC.

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