Calandrinia named after Jean-Louis Calandrini (1703-1758), a Swiss scientist, professor of mathematics and philosophy. Volubilis from Latin meaning to turn, revolve or twine, alluding to the species twining habit.
Distribution and status
Found in the eastern central part of South Australia, growing in Atriplex vesicaria shrublands. Also found in New South Wales and Victoria. Native. Rare in South Australia. Uncommon in the other states.
Herbarium regions: Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Murray, Southern Lofty, Green Adelaide
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin
AVH map: SA distribution map (external link)
Spreading to erect annual herb with thickened tap root and twining flowering stems to 30 cm long. Leaves mostly basal with very few on lower parts of flower stems; sessile, lanceolate to oblanceolate to 5.5 cm long and 1 cm wide, fat and fleshy. Inflorescence loose panicles on long twining stem with pale pink flowers. Flowering between September and October. Fruits are red-brown narrow-ovoid capsule to 7.5 mm long with 3-valves and about twice as long as the sepals. Seeds are dark red-brown reniform-ovoid seed to 0.7 mm long and 0.6 mm wide with distinctive tuberculate surface. Seed embryo type is peripheral.
Seed collection and propagation
Collect seeds between October and December. Collect mature capsules, those that are turning a red-brown colour and contain dark seeds. 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. Seed viability is usually high.