Plants of
South Australia
Wahlenbergia preissii
Campanulaceae
Preiss's Bluebell
Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
Endangered
Critically endangered
Extinct
Data deficient
Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
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Botanical art

Kath Alcock painting: 1.

Etymology

Wahlenbergia named by H.A Schrader in honour of Georg Göran Wahlenberg (1780-1851), a Swedish professor of botany. Preissii named after Johann August Ludwig Preiss (1811-1883), a German-born British botanist and zoologist, who collected plants extensively in Western Australia.

Distribution and status

Found on Eyre Peninsula and in the southern Mount Lofty Ranges in South Australia, growing in open sites in a variety of vegetation types. Also found in Western Australia. Uncommon in South Australia. Common in Western Australia.
Herbarium regions: Eyre Peninsula, Southern Lofty
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula
AVH map: SA distribution map (external link)

Plant description

Annual herb with a single or few-stems to 40 cm high, upper parts glabrous, lower parts hairy. Leaves opposite, becoming alternate up the stem, to 30 mm long and 6 mm wide, obovate, becoming linear up the stem, margins flat or sometimes undulate. Flowers terminal, blue or sometimes white, funnel-shaped with 5 narrowly oblong lobes. Flowering between August and November. Fruits are brown elongated cone capsule to 7 mm long. Seeds are tiny light brown elliptic seed to 0.6 mm long and 0.3 mm wide. Seed embryo type is spatulate under-developed.

Seed collection and propagation

Collect seeds between October and December. Collect capsules that are maturing, drying and turning brown with hard seeds inside. Place the capsules in a tray and leave to dry for a week. Then rub the capsules gently with your hands to dislodge the seeds. Use a sieve to separate the unwanted material. Be careful as the seeds are very small. 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. From one collection, the seed viability was high, at 95%.

Seeds stored:
  Hide
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
24,400 (0.48 g)
24,400 (0.48 g)
5016-Nov-2007RJB75075
Southern Lofty
19-Sep-200895%-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.