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Grevillea humifusa Olde & Marriott
Grevillea 1:182 (1994)

Conservation Code: Threatened Flora (Declared Rare Flora — Extant)
Naturalised Status: Native to Western Australia
Name Status: Current

Brief Description
Amanda Spooner, Thursday 2 October 1997

Prostrate to decumbent, lignotuberous shrub. Fl. red, Sep to Nov. Gravelly loam over laterite.

Distribution

Beard’s Provinces: South-West Province.

IBRA Regions: Geraldton Sandplains, Swan Coastal Plain.

IBRA Subregions: Lesueur Sandplain, Perth.

Local Government Areas (LGAs): Dandaragan.

Scientific Description
Chris Hollister and Nicholas S. Lander, Tuesday 8 April 2008

Habit and leaf form. Prostrate. Branchlets not glaucous. Leaves simple, 10–20 mm long overall. Leaf blade dissected, subpinnatisect, bipinnatisect. Leaf lobes 5–10 mm long, 0.5–0.8 mm wide. Margins revolute, enclosing the lower surface of the leaf blade, forming two grooves with the midvein. Hairs straight.

Inflorescence and floral features. Inflorescence terminal; a raceme. Flowers red or pink, very irregular. Pedicel 2–4 mm long. Perianth 6–8 mm long, glabrous, 4 -partite; lobes free and joined. Stamens 4. Pistil 20–25 mm long, stipitate; stipe 2–3 mm long. Ovary glabrous. Styles glabrous, orange or red or pink. Pollen presenter oblique.

Fruit features. Fruit ribbed or ridged, oblong, glabrous, not viscid, 12–15 mm long.

Flowering Time. July, or August, or September, or October.

Habitat. Amongst medium trees, or low trees, or tall (sclerophyll) shrubland; in gravelly soil, or loam.

Distribution. Western Australia. Western Australian Botanical Province(s): South-west; IBRA Bioregions SW: GS and SWA. Western Australian native; endemic to Western Australia.

Etymology. humifusa (L): humi on or to the ground + fusus spread out; bot. having a low, spreading habit of growth.

Descriptions were generated using DELTA format and DELTA software: Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993 onwards, 1995 onwards, 1998)