Electronic Flora of South Australia
Electronic Flora of South Australia
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Electronic Flora of South Australia species Fact Sheet

Family: Proteaceae
Hakea rugosa

Citation: R. Br., Trans. Linn. Soc. 10:179 (1810).

Synonymy: Not Applicable

Common name: Dwarf hakea, wrinkled hakea.

Low spreading intricate bush or rounded compact shrub 0.2-2.5 m high; branchlets appressed-white-pubescent, quickly glabrescent; leaves widely spreading, almost straight, rarely ascending, 0.6-6 cm X 0.7-1.6 mm, grey-green, glabrous, leaving a narrow-triangular scar, mucro 1-3 mm long; involucral bracts appressed-white-pubescent, ciliolate.

Inflorescence an umbel of 2-9 cream-white scented flowers; rhachis a knob 0.6-1.3 mm long, brown-tomentose; pedicel 2-5 mm long; perianth 2.5-4.2 mm long, limb 0.8-1.3 mm long; anthers 0.35-0.5 mm long; gland U- or V-shaped, 0.2-0.5 mm long laterally, with 2 lateral teeth; pistil 3.5-5.5 mm long; style at length straight; pollen-presenter a slightly oblique disc 0.4-0.5 mm long, topped by a cone 0.25-0.5 mm high.

Fruit 1.4-2.8 cm long, rugose, sometimes also warty in parts, in median view elliptic-oblong, 0.7-1.6 cm wide, in lateral view 0.9-1.7 cm wide including a projecting reflexed narrow beak 3-7 mm long, 4-6 mm wide including the fragile horns, valves fused at the base, seed cavity flanked on one side by a narrow layer of brown wood, sometimes with a narrower whitish outer layer; seed curved-obovate, 10-15 X 5-10 mm, body obovate, 5-8 mm long, rugose-verrucose, black, with a brief ridge, wing terminal on both sides, sometimes decurrent to halfway down one side.

image of FSA1_Hakea_rug.jpg twig, inflorescences, flower, pistil and internal and external median veiws of fruits
Image source: fig. 77c in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).

Published illustration: Beck & Foster (1972) Wild flowers of South Australia.

Distribution:  In sclerophyllous shrubland, woodland, forest or exposed coastal heath, on rocky slopes or in depressions, on a wide range of soils.

S.Aust.: FR, EP, NL, MU, YP, SL, KI, SE.   Vic.; Tas.

Conservation status: native

Flowering time: June — Nov.

SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology: Very slender-leaved plants may be shade forms.

Author: Not yet available

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