Seeds of South Australia
Convolvulus microsepalus (Convolvulaceae)
Small-flower Bindweed
List of species for Convolvulus
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Seed collecting:
December to May
Herbarium regions:
Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
Fleurieu (KAN02)Kanmantoo
 Rare   (IUCN: RA d(i,ii))   [closely related to C remotus]
Northern Flinders (FLB05)Flinders Lofty Block
 Near Threatened   [needs good winter rainfall]
Central Flinders (FLB06) 
 Least Concern   [needs good winter rainfall]
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Rare   (IUCN: RA d(i,ii))
Murnpeowie (STP03)Stony Plains
 Near Threatened
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 Convolvulus]
SA Flora:
Flora of South Australia Edition 5
Name derivation:
Convolvulus the Latin name of some bindweed, from 'convolvere' meaning to roll together or entwine. Microsepalus from Greek meaning small sepals; referring to the species small flowers.
Distribution:
Found in the eastern part of South Australia with a few collcetions from the Eyre Peninsula, growing on gravelly clay loam or loamy soils on open plains in chenopod shrubland. Also found in New South Wales. Previously recorded from Victoria but now presumed extinct.
Status:
Native. Uncommon in South Australia. Rare in New South Wales. Presumed extinct in Victoria.
Plant description:
Herb with trailing and twining stems. Leaves linear to oblong, sometimes triangular, to 45 mm long and 20 mm wide, acute to rounded truncate, base hastate or sagittate, lobes entire, 2-toothed to slightly lobed, terminal lobe entire, sparsely to moderately densely hairy with appressed hairs. Flowers solitary, funnel-shaped, white or pink, with a creamish-green throat. Flowering between August and March.
Fruit type:
Brown globular capsule to 7 mm diameter.
Seed type:
Dark brown secteroid seed to 4 mm long, surface deep rugose with scattered hairs.
Embryo type:
Folded.
Seed collecting:
Collect capsules that are maturing, turning brown and contain hard seeds inside. Capsules can be opened or unopened and some seed can be collected from the ground under the plant.
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. 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 85%.
Seed germination:
This species has physical dormancy that needs to be overcome for the seed to germinate (e.g. nicking the seed coat).
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
2590 (23.87 g)
2590 (23.87 g)
3018-Jan-2007RJB71274B
Northern Lofty
1-Aug-200785%-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.