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.

Gilgiochloa indurata

HABIT Annual; caespitose. Culms erect, or geniculately ascending; 30–90 cm long. Culm-nodes pubescent. Ligule a fringe of hairs. Leaf-blades 4–15 cm long; 3–9 mm wide. Leaf-blade margins cartilaginous; crenate.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; linear; 3–15 cm long; 8–12 cm wide. Primary panicle branches accrescent to a central axis; with lateral stumps on axis.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 7–8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.4–0.5 mm long; pubescent; truncate.

GLUMES Glumes persistent; dissimilar; subequal in width; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 3–4 mm long; 0.5 length of upper glume; membranous; without keels; 3 -veined. Lower glume surface pilose; hairy above; with tubercle-based hairs. Lower glume apex acute; awned; 1 -awned. Lower glume awn 4–7 mm long. Upper glume ovate; 7–8 mm long; membranous; without keels; 3 -veined. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 0.5–1.5 mm long.

FLORETS Basal sterile florets barren; with palea; separately deciduous. Lemma of lower sterile floret similar to upper glume; elliptic; 7–8 mm long; membranous; 5–7 -veined; pubescent; acuminate. Palea of lower sterile floret woody. Fertile lemma oblong; 3.5–4.5 mm long; coriaceous; without keel; 5 -veined. Lemma surface pubescent; with a transverse row of hair tufts; bearing 2–4 hair tufts in all. Lemma margins involute; interlocking with palea keels. Lemma apex lobed; 2 -fid; incised 0.2–0.3 of lemma length; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; flat below; 14–20 mm long overall; with twisted column; deciduous; abscissing from top of lemma. Lateral lemma awns arising on apex of lobes; 1–1.5 mm long; shorter than principal. Palea 2 -veined. Palea keels winged; narrowly winged; with clavate appendages on wings.

FLOWER Lodicules 2; cuneate; 0.6–0.7 mm long; fleshy. Anthers 3.

FRUIT Caryopsis with adherent pericarp; fusiform; glabrous. Hilum linear.

DISTRIBUTION Africa: west-central tropical, east tropical, and southern tropical.

NOTES Arundinelleae. FTEA.

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