Seeds of South Australia
Tetratheca insularis (Tremandraceae)
Kangaroo Island Pink-eyes
List of species for Tetratheca
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Seed collecting:
November to January
Herbarium region:
Kangaroo Island
NRM region:
Kangaroo Island
IBRA region
Kangaroo Island (KAN01)Kanmantoo
 Least Concern   [endemic to KI]
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Tetratheca]
Name derivation:
Tetratheca from the Greek 'tetra' meaning four; and 'theke' meaning case; referring to the 4 anther-loculi, the anthers are often four-lobed or four-celled. Insularis  from Latin meaning pertaining to or growing on islands; referring to the species occurring only on Kangaroo Island.
Endemic to South Australia and found only on Kangaroo Island.
Native. Common in South Australia.
Plant description:
Compact shrub to 60 cm, stems branching close above a slender root stock with stems stout, covered with small white tubercles usually producing small white erect hairs. Leaves alternate, opposite or in whorls of 3-5, ovate to narrowly ovate, to 12 mm long and 1-3 mm wide, usually recurved to revolute, apex with a short stiff point tending to recurve. Inflorescences single in the axils of upper and occasionally lower leaves with dark-lilac-pink bell-shaped flowers, sepals 4, petals 4, stamens 8, body of the anther glabrous, curved, contracting into the anther tube with a narrow orifice, ovary with dense short erect hairs and small glandular hairs. Flowering between August and December.
Fruit type:
Brown ovoid capsule to 6 mm long and 4 mm wide.
Seed type:
Yellow cylindrical seed to 3 mm long and 2 mm wide, covered in scattered hairs and with a cream appendage.
Seed collecting:
Collect maturing capsules those that are fat, turning a pale brown and contain hard dark seeds.
Seed cleaning:
Place the capsules in a tray and leave to dry for a week. Then rub the dried capsules gently by hand to dislodge the seeds. Use a sieve to separate the unwanted material. 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.