Seeds of South Australia
Calandrinia disperma (Portulacaceae)
Two-seeds Purslane
List of species for Calandrinia
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Seed collecting:
September to January
Herbarium regions:
North Western, Nullarbor, Gairdner-Torrens, Eyre Peninsula
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands
IBRA regions
Eyre Mallee (EYB05)Eyre Yorke Block
 Rare   (IUCN: RA d(i,ii))
Gawler Volcanics (GAW02)Gawler
 Near Threatened
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(i,ii))
Kingoonya (GAW05) 
 Near Threatened
Roxby (GAW07) 
 Rare   (IUCN: RA d(i,ii))   [edge of range; limited habitat]
Commonwealth Hill (GAW08) 
 Least Concern
Maralinga (GVD03)Great Victoria Desert
 Least Concern
Kintore (GVD04) 
 Near Threatened
Yellabinna (GVD06) 
 Near Threatened
Mann-Musgrave Block (CER01)Central Ranges
 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 Calandrinia]
Name derivation:
Calandrinia named after Jean-Louis Calandrini (1703-1758), a Swiss scientist, professor of mathematics and philosophy. Disperma from the Greek 'di' meaning two and 'spermus' meaning a seed; referring to its capsule  having only 2 seeds.
Found scattered in the central and north-western parts in South Australia growing on red sand dunes. Also found in Western Australia, Northern Territory and New South Wales.
Native. Common in South Australia. Uncommon in new South Wales. Common in the other States.
Plant description:
Decumbent orange-red annual with stems to 50 cm long. Leaves basal and on lower parts of flower stems; alternate, sessile, linear to terete, to 50 mm long and 2 mm wide. Inflorescence an open spreading panicle that curves upwards in fruit, with clusters of small, pink flowers. Flowering between July and November.
Fruit type:
Orange-brown  pear-shaped capsule to 6 mm long, broadest below the middle, abruptly swollen at the base with 3-valves, opening by a terminal pore with only 2 seeds.
Seed type:
Dark red-brown narrow-reniform seed to 1.8 mm long and 0.7 mm wide, with small tubercules at the narrow end.
Embryo type:
Seed collecting:
Collect mature capsules, those that are turning a Orange-brown colour and contain 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 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.