New! - Search other data sources for Loudetiopsis contrerasii

Help - Wrong Description?

Kew Data Sources

Kew's Herbarium Catalogue
ePIC - Electronic Plant Information Centre

External Data Sources

Note - this takes you off of our website
Use your browser's back button to return to this page

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.

Loudetiopsis contrerasii

HABIT Perennial. Culms erect; 200 cm long; 4–5 mm diam. Culm-internodes distally glabrous. Culm-nodes brown; glabrous. Lateral branches lacking, or sparse. Leaf-sheaths outer margin hairy. Leaf-sheath oral hairs ciliate; 5 mm long. Ligule a fringe of hairs; 1–1.5 mm long. Leaf-blades 40–60 cm long; 5–10 mm wide. Leaf-blade surface pilose; hairy adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong; 40–60 cm long. Panicle axis scabrous.

Spikelets in threes. Fertile spikelets pedicelled; 3 in the cluster. Pedicels filiform; subequal.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; compressed slightly; 16–17 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident.

GLUMES Glumes persistent; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 0.5–0.6 length of upper glume; chartaceous; dark brown; without keels. Lower glume surface setose; hairy on veins; with tubercle-based hairs. Lower glume apex acuminate. Upper glume lanceolate; chartaceous; dark brown; without keels. Upper glume surface pubescent. Upper glume apex acuminate.

FLORETS Basal sterile florets male; with palea; separately deciduous. Lemma of lower sterile floret similar to upper glume; lanceolate; chartaceous; acuminate. Fertile lemma elliptic; 8.5–9 mm long; 1 mm wide; coriaceous; without keel. Lemma surface pilose. Lemma margins involute; interlocking with palea keels. Lemma apex lobed; 2 -fid; with lobes 2 mm long; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 20 mm long overall; with 8.5–11 mm long limb; with twisted column; deciduous; abscissing from top of lemma. Column of lemma awn 14–34 mm long; hispidulous. Palea 2 -veined. Palea keels approximate; thickened.

FLOWER Anthers 2; 4–6 mm long.

FRUIT Caryopsis with adherent pericarp; glabrous.

DISTRIBUTION North America: Mexico.

NOTES Arundinelleae. Guzman 2004.

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