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Fimbristylis bisumbellata (Forssk.) Bubani
Family Cyperaceae
Fimbristylis bisumbellata (Forssk.) Bubani APNI*

Description: Slender densely tufted annual.

Culms compressed, 7–25 cm high, 0.5–1 mm diam.

Leaves shorter to somewhat longer than culms, 1–2 mm wide; ligule a dense fringe of short hairs. Inflorescence compound or decompound, with many solitary spikelets, on branches to 4 cm long; involucral bracts leaf-like, 2 or 3 much shorter than to much exceeding inflorescence. Spikelets ovoid to cylindrical, angular, acute, 3–8 mm long, c. 1.5 mm diam. Glumes spiral, membranous, acute, mucronulate, with 3-nerved acute midrib, hyaline margins, 1.3–1.8 mm long, glabrous, red-brown sides. Stamen 1; anther 0.5 mm long. Style 2-fid, ciliate above.

Nut biconvex, broad-obovoid or obovoid, shortly stipitate, 0.6–0.7 mm long, 0.4–0.5 mm diam., conspicuously trabeculate, pale yellow, with epidermal cells impressed, transversely oblong, in 5–9 vertical rows on either face.

Flowering: spring–summer.

Distribution and occurrence: Grows on stream banks, on sandy soil; collected near Grevillia and Casino.
NSW subdivisions: NC
Other Australian states: Qld N.T.
AVH map***

Text by K. L. Wilson
Taxon concept: Flora of NSW 4 (1993)

APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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