Plants of
South Australia
Grammosolen dixonii
Solanaceae
Woolly Ray-flower
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Botanical art

Kath Alcock painting: 1.

Etymology

Grammosolen from the Greek 'gramme' meaning a line or stroke of a pen and 'solen' meaning a pipe, alluding to the striated corolla tube. Dixonii named after Samuel Dixon (1841-1927), a naturalist and early environmentalist in South Australia and the collector of the type specimen.

Distribution and status

Endemic to South Australia and found on the north-eastern Eyre Peninsula, northern Yorke Peninsula and the Murray region, on deep sandy soils, often in disturbed mallee-spinifex associations. Native. Common in South Australia.
Herbarium regions: Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula
NRM regions: Eyre Peninsula, Northern and Yorke, South Australian Murray-Darling Basin
AVH map: SA distribution map (external link)

Plant description

Erect, spreading or sprawling shrub to 2 m high and 5 m diameter, covered in greyish woolly hairs. Leaves ovate-triangular to sub-cordate, to 20 mm long and 17 mm wide; densely hairy, entire to undulate. Inflorescence sometimes forming leafy spikes with 1–3 dull-white flowers with purple striations in the throat. Flowering between August and January. Fruits are brown sub-globular capsule to 4.5 mm long. Seed embryo type is linear fully developed.

Seed collection and propagation

Collect seeds between November and April. Collect capsules that are maturing, fat, turning a straw colour and contain hard brown seeds inside. Monitor the plants as the capsules will dry, split and disperse the seeds in a short space of time. 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.

Seeds stored:
  Hide
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA800 (1.46 g)25+21-Dec-2017TST1381
Eyre Peninsula
30-Jun-201880%-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.