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.

Isachne globosa

HABIT Annual, or perennial. Glands annular. Culms erect, or geniculately ascending, or decumbent, or prostrate; 10–90 cm long; rooting from lower nodes. Leaf-sheaths glabrous on surface, or pilose; outer margin hairy. Ligule a fringe of hairs; 1–4 mm long. Leaf-blade base cuneate, or broadly rounded, or cordate. Leaf-blades linear, or lanceolate, or ovate; 1–10 cm long; 4–20 mm wide. Leaf-blade margins unthickened, or cartilaginous; scaberulous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 1–15 cm long; 1–8 cm wide. Panicle branches capillary.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; eglandular, or glandular.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.5–2 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; similar; shorter than spikelet, or reaching apex of florets; thinner than fertile lemma. Lower glume elliptic to orbicular; 1.4–2 mm long; 1 length of upper glume; 0.8–1 length of spikelet; membranous; without keels; 5–7 -veined. Lower glume surface glabrous, or puberulous; hairy at apex. Lower glume apex obtuse. Upper glume oblong, or ovate; 1–1.8 mm long; 0.75–1 length of spikelet; membranous; without keels; 7–9 -veined. Upper glume surface glabrous, or puberulous; hairy at apex. Upper glume apex obtuse.

FLORETS Basal sterile florets male; with palea; separately deciduous. Lemma of lower sterile floret elliptic to ovate; 1.5–2 mm long; 1.3–1.5 length of fertile lemma; 1 length of spikelet; chartaceous, or cartilaginous; glabrous. Fertile florets bisexual, or female. Fertile lemma ovate, or orbicular; 1–1.5 mm long; coriaceous; without keel; 5–7 -veined. Lemma lateral veins obscure. Lemma surface glabrous, or puberulous. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.

FLOWER Anthers 3; 0.75–1 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: Arabia, China, and eastern Asia. Asia-tropical: India, Indo-China, Malesia, and Papuasia. Australasia: Australia and New Zealand. Pacific: southwestern, south-central, and northwestern.

NOTES Isachneae. =Isachne dispar, Isachne miliacea. Gilliland 1997.

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