Erect shrub or tree, to 6 m high. Fl. red/pink/orange/yellow, Apr to Oct. Red sand or loam, stony or skeletal soils, laterite, sandstone, limestone, quartzite. Sand dunes, plains, rocky hills & gullies, cliffs or ridges, along creeklines.
Beard’s Provinces: Eremaean Province, Northern Province.
IBRA Regions: Central Kimberley, Central Ranges, Great Sandy Desert, Little Sandy Desert, Northern Kimberley, Ord Victoria Plain, Pilbara, Tanami.
IBRA Subregions: Chichester, Fortescue, Hamersley, Mackay, Mann-Musgrave Block, McLarty, Mitchell, Ord, Ord-Victoria Plains P1, Pentecost, Roebourne, Rudall, Tanami P1, Trainor.
IMCRA Regions: King Sound.
Local Government Areas (LGAs): Ashburton, Derby-West Kimberley, East Pilbara, Halls Creek, Karratha, Meekatharra, Ngaanyatjarraku, Port Hedland.
Habit and leaf form. Shrubs, 1–5 m high. Branchlets not glaucous. Leaves simple, 25–90 mm long overall. Leaf blade 20–55 mm wide, undissected, flat, obovate or spathulate. Margins dentate or prickly, flat. Hairs straight.
Inflorescence and floral features. Inflorescence axillary, or cauline; a raceme. Flowers cream or yellow or red, somewhat irregular. Pedicel 2–9 mm long. Perianth 4–7 mm long, glabrous or simple-hairy or glandular-hairy, 4 -partite; lobes free and joined. Stamens 4. Pistil 6–8 mm long, stipitate; stipe 1.5–3 mm long. Ovary glabrous. Styles hairy, yellow. Pollen presenter lateral.
Fruit features. Fruit oblong or ellipsoidal, glabrous, 10–17 mm long.
Flowering Time. July (flowers throughout the year).
Habitat. Amongst medium trees, or low trees, or tall (sclerophyll) shrubland; in rocky or stony soil, or gravelly soil, or sand, or loam, or clay.
Distribution. Western Australia, Northern Territory, South Australia, Queensland. Western Australian Botanical Province(s): Eremaean and Northern; IBRA Bioregions ER: GSD, PIL, LSD, GD, and CR; IBRA Bioregions N: NK, CK, DL, OVP.
subsp .aprica: Outer surface of perianth with appressed biramous hairs; floral rachis 15–40 mm long
subsp cratista: Outer surface of perianth with appressed biramous hairs; floral rachis 30–120 mm long
subsp hispidula: Outer surface of perianth with short erect hairs
subsp. macrodonta: Outer surface of perianth glabrous; margin of toral rim dentate; a large triangular tooth at each end; floral rachis 30–60 mm long
subsp. pallida: Outer surface of perianth with appressed biramous hairs; style with simple glandular hairs
subsp. wickamii: Outer surface of perianth glabrous; floral rachis 10–20 mm long; toral rim margin undulate.
Etymology. wickhamii: John Clements Wickham (1798–1864), 1st lieut. on HMS Beagle 1831–36 (Darwin's expedition); commanded the ship in WA waters 1837–38; later goverment resident at Moreton Bay, Queensland: Acacia.
Descriptions were generated using DELTA format and DELTA software: Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993 onwards, 1995 onwards, 1998)
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