Seeds of South Australia
Hakea sericea (Proteaceae)
Silky Hakea
List of species for Hakea
Click on an image to enlarge it
Seed collecting:
January to December
Herbarium regions:
Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, South East
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Hakea]
Name derivation:
Hakea named after Baron Christian Ludwig von Hake (1745-1818), a German horticulturalist and patron of botany. Sericea from the Latin 'sericeus' meaning silky; possible referring to the silky shining hairs on the young branches.
Distribution:
Naturalised in South Australia with a few records from the southern Mount Lofty Ranges and the South-east, growing on roadside in dry sclerophyll forest and heaths. Native to Queensland and New South Wales. Naturalised in Victoria.
Status:
Introduced in South Australia. Introduced in Victoria. Rare in Queensland. Common in New South Wales.
Plant description:
Divaricate shrub to 4 m high with densely hairy young branches. Leaves at right angles to stem, terete, spreading, grooved below, to 72 mm long and 1.3 mm wide, glabrous, pungent tip. Inflorescence axillary clusters with 1–6 white flowers (pinkish in bubs). Flowering between July and October.
Fruit type:
Greyish-brown woody ovoid fruit to 30 mm long and 2.2 mm wide, with a deeply wrinkled surface and a pointy beaked end. Fruit split into two to reveal two seeds.
Seed type:
Dark brown to black ovoid seed to 8 mm long and 5 mm wide (19 mm long and 7 mm wide including the wing that extend down one sides of seed).
Embryo type:
Investing.
Seed collecting:
Collect mature woody fruit that are hard, brown and not split. These will contain seeds.
Seed cleaning:
Place the woody fruit in a tray and leave to dry until it split 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
Seed germination:
Seeds are non-dormant, viable seed should germinate readily without pre-treatment.