Seeds of South Australia
Gunniopsis calva (Aizoaceae)
Smooth Pigface
List of species for Gunniopsis
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Seed collecting:
October to December
Herbarium regions:
Gairdner-Torrens, Eyre Peninsula
NRM region:
South Australian Arid Lands
IBRA regions
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))   [limited habitat]
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(ii))   [limited habitat]
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(ii))   [limited habitat]
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(ii))   [limited habitat]
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(ii))   [limited habitat]
Torrens (GAW06) 
 Rare   (IUCN: RA d(ii))   [edge of range; grows around saltpans; undercollected]
Breakaways (STP01)Stony Plains
 Rare   (IUCN: RA d(i,ii))   [edge of range; outlier]
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 Gunniopsis]
Name derivation:
Gunniopsis from the genus Gunnia named after Ronald Campbell Gunn (1808-1881), a Tasmania botanist and from the Greek 'opsis' meaning resembling; alluding to the resembles of the genus to the genus GunniaCalva from the Latin 'calvus' meaning hairless, smooth; referring to the smooth branches and leaves of this species.
Endemic to South Australia and found on the northern Eyre Peninsula and in the Gairdner-Torrens region, growing around the margins of salt lakes.
Native. Uncommon in South Australia.
Plant description:
Glabrous annual berb to 20 cm high with terete and striated branchlets. Leaves succulent, ovate, spathulate or oblong, yellow-green, to 32 mm long and 10 mm wide. Flowers solitary, small yellow. Flowering between August and October.
Fruit type:
Brown depressed capsule to 5.5 mm across, with two valves.
Seed type:
Small brown reniform seed to 0.7 mm long, covered with short curved ridges.
Embryo type:
Seed collecting:
Pick mature capsules when they turn a straw colour and contain hard dark seeds.
Seed cleaning:
Place the capsules in a tray and leave to dry for at least a week. Then rub the dried capsules 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 two collections, the seed viability were high, at 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
13200 (1.59 g)
13200 (1.59 g)
10900 (1.53 g)
10900 (1.53 g)
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.