Botanical art
Common names
Wrinkled Hakea
Dwarf Hakea
Etymology
Hakea named after Baron Christian Ludwig von Hake (1745-1818), a German horticulturalist and patron of botany. Rugosa from the Latin 'rugosus' meaning somewhat wrinkled, referring to the surface of the fruit.
Distribution and status
Found in southern South Australia from the southern Flinders Ranges to the lower South-east growing in mallee scrub or coastal heath on sand or loam. Also found in Victoria. Native. Common in South Australia. Common in Victoria.
Herbarium regions: Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern, Green Adelaide
AVH map: SA distribution map (external link)
Plant description
Low spreading intricate bush or rounded compact shrub to 2.5 m high with white hairs on branchlets and young leaves. Leaves rigid, terete, to 60 mm long and 1.3 mm wide; pungent tip, glaucous. Inflorescence axillary clusters with 6–10 cream-white, scented flowers. Flowering between August and October. Fruits are whitish-brown woody S-shaped fruit to 22 mm long and 16 mm wide, with a coarse wrinkled surface and a beak at one end. Fruit splits into two to reveal two seeds. Seeds are brown to black ovoid seed to 7 mm long and 4 mm wide (13 mm long and 8 mm wide including the wing that extend narrowly down both sides of seed). Seed embryo type is investing.
Seed collection and propagation
Collect seeds between January and December. Collect mature woody fruit that are hard, brown and not split. These will contain seeds. Place the woody fruit in a tray and leave to dry until it splits open. Fruits can be placed in the oven at low temperatures to achieve the same result. Place the dried fruit in a bucket and shake to dislodge the seeds from the valves. Separate the seeds from the fruit and store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place. Seeds are non-dormant, viable seed should germinate readily without pre-treatment.
| Location | No. of seeds (weight grams) | Number of plants | Date collected | Collection number Collection location | Date stored | % Viability | Storage temperature |
|---|---|---|---|---|---|---|---|
| MSB | 1,300 (10.1 g) | 50+ | 14-Feb-2006 | KHB54 South Eastern |
Number of plants: This is the number of plants from which the seeds were collected.
Collection location: The Herbarium of South Australia's region name.
% Viability: Percentage of filled healthy seeds determined by a cut test or x-ray.