Seeds of South Australia
Limosella granitica (Scrophulariaceae)
Granite Mudwort
List of species for Limosella
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Seed collecting:
September to November
Herbarium region:
Eyre Peninsula
NRM region:
Eyre Peninsula
IBRA regions
Eyre Hills (EYB03)Eyre Yorke Block
 Vulnerable   (IUCN: VU D2)   [endemic ]
Eyre Mallee (EYB05) 
 Vulnerable   (IUCN: VU D2)   [endemic ]
Gawler Lakes (GAW03)Gawler
 Vulnerable   (IUCN: VU D2)   [endemic]
Yellabinna (GVD06)Great Victoria Desert
 Vulnerable   (IUCN: VU D2)   [endemic]
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 Limosella]
Name derivation:
Limosella from diminutive of the Latin 'limosus' meaning muddy; alluding to the habitat and size of the plant. Granitica means to grow in granite crevices; referring to the the species habitat in granite rockholes.
Endemic to South Australia and restricted to granite outcrops on central Eyre Peninsula, growing in fine silt in granite rockholes.
Native. Very rare in South Australia.
Plant description:
Aquatic perennial herb, occasionally with a conspicuous stolon. Leaves to 80 mm long, with the blade often floating on the surface of the water. Leaf blade obovate to 20 mm long and 4.5 mm wide, attenuated at the base and rounded at the apex. The flower stalks to 22 mm long. Calyx to 3 mm long, red-purple, the corolla white, anthers black with white pollen. Flowering between September and October.
Fruit type:
Dark brown globular capsule to 4.8 mm long and 3.5 mm wide, downturned into the silt.
Seed type:
Brown narrow oblong seed to 0.75 mm long and 0.25 mm wide, deep reticulated surface.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect mature capsules, turning brown with hard seeds. May have to wait till the water have evaporated.
Seed cleaning:
Place the capsules in a tray and leave to dry for a week. Then rub the capsules gently with your fingers or a rubber bung to dislodge the seeds from the capsules. Use a sieve to separate the unwanted material. Be careful as the seeds are very small. Seeds should be oblong, shiny brown. 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)
of plants
Collection number
Collection location
% ViabilityStorage
BGA2000 (0.0902 g)2-Nov-2005DJD168
Eyre Peninsula
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.