Seeds of South Australia
Mitrasacme pilosa var. pilosa (Loganiaceae)
Hairy Mitrewort
List of species for Mitrasacme
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Seed collecting:
November to January
Herbarium regions:
Eyre Peninsula, South Eastern
NRM regions:
Eyre Peninsula, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Vulnerable   (IUCN: VU D2)   [very limited, localised, 1 pop at Mt McIntyre]
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)   [Tilley Swamp; likes disturbance & space]
Glenelg Plain (NCP02) 
 Vulnerable   (IUCN: VU D2)
Eyre Hills (EYB03)Eyre Yorke Block
 Vulnerable   (IUCN: VU D2)   [needs high rainfall]
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 Mitrasacme]
Name derivation:
Mitrasacme from the Greek 'mitra' meaning head-dress (used in the sense of an ecclesiastical mitre) and 'akme' meaning summit; referring to resemblance of the corolla of Mitrasacme pilosa to a bishop's mitre. Pilosa from the Greek 'pilosus' meaning covered in long, soft hairs; referring to the hairs on the stems and flowers.
Distribution:
Found mainly in the the lower South-east and a single collection from the Eyre Peninsula in South Australia, growing in wet heaths on peaty or gravelly soils. Also found in New South Wales, Victoria and Tasmania.
Status:
Native. Rare in South Australia. Uncommon in New South Wales. Common in the other states.
Plant description:
Prostrate, procumbent or weakly erect perennial herb to 11 cm high with weak branches covered in coarse and dense hairs. Leaves narrowly elliptic, narrowing towards the base, to 7 mm long and 5.5 mm wide, glabrous or sometimes with a few scattered hairs on the upper and lower surfaces. Inflorescence in the upper axils or in small terminal, leafy clusters on stalk to 10 mm long, elongating to 15 mm in fruit, sparsely to densely hairy, with creamy white flowers. Calyx externally hairy, inner surface of lobes glabrous, corolla glabrous outside, hairy inside. Flowering between October and November.
Fruit type:
Brown ellipsoid capsules ellipsoid to 6 mm diameter.
Seed type:
Tiny brown to black globular to ellipsoid seed to 0.6 mm, with a wrinkled surface.
Embryo type:
Linear under-developed.
Seed collecting:
Collect maturing capsules, those that are fat, turning a straw colour and contain hard dark seeds.
Seed cleaning:
Place the capsules in a tray and leave to dry for one to two weeks. Then rub the capsules gently by hand or with a rubber bung to dislodge the seeds. Use a sieve to separate the unwanted material. Be very careful as the seeds are very small. 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%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA4300 (0.27 g)1213-Dec-2007DJD981
South Eastern
19-Sep-200890%+5°C, -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.