Seeds of South Australia
Logania insularis (Loganiaceae)
Kangaroo Island Logania
List of species for Logania
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Seed collecting:
November to January
Herbarium region:
Kangaroo Island
NRM region:
Kangaroo Island
IBRA region
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU D2)   [KI endemic; restricted to Cape Borda; AoO 3.5 km2; gets shaded out by veg; comes up after fire]
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 Logania]
Name derivation:
Logania named after James Logan (1674-1751), an Irish born botanist who emigrated to North America, became Governor of Pennsylvania and wrote a book on the sexuality of plants. Insularis from Latin meaning pertaining to or growing on islands; referring to its occurs only on Kangaroo Island.
Distribution:
Endemic to South Australia and found only on the north-eastern tip of Kangaroo Island, growing along the coast in open mallee or low shrubland on brown sandy soil overlying limestone.
Status:
Native. Very rare in South Australia.
Plant description:
Small erect shrub to 30 cm high, dioecious, stems minutely hairy. Leaves elliptic to obovate to 8 mm long and 3 mm wide, with scattered hairs, margins recurved, sessile or with stalk to to 2.5 mm long. Inflorescence in short few-flowered clusters with unisexual, cream to pale-yellow flowers. Flowering between September and November.
Fruit type:
Orange-brown capsule 3.5 mm long and 2.5 mm wide. 
Seed type:
Shiny black long convex seed to 1.5 mm long and 0.8 mm wide, with a reticulated surface.
Embryo type:
Linear fully developed.
Seed collecting:
Collect maturing capsules, those that are fat, turning orange-brown in colour, have not open and contain hard black seeds.
Seed cleaning:
Place the capsules in a tray and leave to dry for one to two weeks for it to split. Then rub the capsules gently with a rubber bung 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.
Seed viability:
From one collection, the seed viability was high, at 90%.