Seeds of South Australia
Logania crassifolia (Loganiaceae)
Coast Logania
List of species for Logania
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Seed collecting:
October to December
Herbarium regions:
Eyre Peninsula, Yorke Peninsula, Southern Lofty, Kangaroo Island
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke
IBRA regions
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)   [likes limestone cliffs]
Kangaroo Island (KAN01)Kanmantoo
 Least Concern   [common on coastal areas, dunes, limestone]
Fleurieu (KAN02) 
 Rare   (IUCN: RA d(i,ii))   [In Newland Head, Pt Elliott & Cape Jervis]
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern
Eyre Hills (EYB03) 
 Near Threatened
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Rare   (IUCN: RA d(ii))
Murray Lakes and Coorong (MDD03)Murray Darling Depression
 Vulnerable   (IUCN: VU D2)   [likes limestone cliffs]
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. Crassifolia from the Latin 'crassus' meaning thick and 'folium' meaning a leaf; referring to its thick ovoid leathery leaves. 
Distribution:
Endemic to South Australia and found on the southern Eyre and Yorke Peninsulas, Kangaroo Island and the southern Mount Lofty Ranges, growing along the coast in coastal low open to closed heath, among rocks near beach, on sandy soils of consolidated dunes overlying limestone.
Status:
Native. Common in South Australia.
Plant description:
Prostrate shrub to 30 cm high and 100 cm wide, dioecious with scabrous stems. Leaves broadly obovate or broadly elliptic, to 30 mm long and 30 mm wide, glabrous to minutely papillose, flat, margins thickened with scabrous stalk to 3 mm long. Inflorescence compact terminal clusters with white unisexual flowers. Flowering between August and October.
Fruit type:
Grey-brown ovoid capsule to 8 mm long and 6.5 mm wide. 
Seed type:
Shiny black barbell-shaped convex seed to 1.5 mm long and 1 mm wide, with a reticulated surface.
Embryo type:
Linear fully developed.
Seed collecting:
Collect maturing capsules, those that are fat, turning 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 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
12100 (6.92 g)
12100 (6.92 g)
50+30-Nov-2006TST114
Yorke Peninsula
1-Aug-2007100%-18°C
Location: BGA — the seeds are stored at the Adelaide Botanic Gardens, MSB — the seeds are stored at the Millennium Seed Bank, Kew, England.
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.