Hypolaena grandiuscula F.Muell.

Fragm. 8:85 (1873)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status

Rhizomatous, grass-like or herb (rush-like), 0.4-1 m high. Grey sands. Lower slopes, valley floor.

Amanda Spooner, Descriptive Catalogue, 22 September 2002

Scientific Description

Rhizomes spreading, hairy. Basal sheath glabrous, glossy, striate. Culms terete, internal structure (at base of culm) solid, glabrous, striate, not marbled, not fasciculate. Culm 300-630 mm long. Sheaths (including blade) appressed throughout, dull, striate, glabrous, margins not translucent. Apex finely pointed, glabrous. Dioecious (with separate male and female plants). Male and female inflorescences distinctly dissimilar, posture (male inflorescences only) Distinctly drooping, Culms unbranched below the inflorescence. Male spikelet 4-6.5 mm long. Subtending bract glabrous, Outer bract 1.5-3 mm long, margins thin and translucent, Apex acute. Perianth glabrous. 1.7-2 mm long. Inner bract glabrous, margins thin and translucent, Apex acuminate to attenuate. Inner bract 2.5-2.6 mm long. Filament 0-0.1 mm long. Anther 0.5-0.6 mm long. Female spikelet 7.5-12 mm long. Subtending bract glabrous, margins thin and translucent, Apex acuminate to attenuate. Outer bract 4-7.5 mm long. Perianth glabrous. 3.5-8.5 mm long. Inner bracts 6.8-8.2 mm long, glabrous, margins firm and opaque, Apex acuminate to attenuate. Style one, arising centrally from the ovary apex. 5-8 mm long. Fruit indehiscent (nut). Flowering Time February, August, September, October, November or December. Botanical Province South-West, IBRA Bioregions Jarrah Forest or Warren.

C. Hollister and K.R. Thiele, 1 September 2017


IBRA Regions
Esperance Plains, Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions
Fitzgerald, Perth, Southern Jarrah Forest, Warren.
IMCRA Regions
Local Government Areas (LGAs)
Albany, Busselton, Denmark, Manjimup, Nannup.