Seeds of South Australia
Wahlenbergia preissii (Campanulaceae)
Preiss's Bluebell
List of species for Wahlenbergia
Click on an image to enlarge it
Seed collecting:
October to December
Herbarium regions:
Eyre Peninsula, Southern Lofty
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula
IBRA regions
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [only in Sandy Ck & Parawirra; likes bare ground; weeds a threat]
Southern Flinders (FLB04) 
 Rare   (IUCN: RA b)   (Probable Decline)   [Only comes up after fire. Not often collected]
Central Flinders (FLB06) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [1 old record]
Southern Yorke (EYB01)Eyre Yorke Block
 Rare   (IUCN: RA b)   (Probable Decline)   [Only comes up after fire. Not often collected]
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Rare   (IUCN: RA d(ii))
Eyre Mallee (EYB05) 
 Least Concern
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(i,ii))
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(i,ii))
Baltana (STP07)Stony Plains
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)
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 Wahlenbergia]
Name derivation:
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:
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.
Status:
Uncommon in South Australia. Common in Western Australia.
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.
Fruit type:
Brown elongated cone capsule to 7 mm long.
Seed type:
Tiny light brown elliptic seed to 0.6 mm long and 0.3 mm wide.
Embryo type:
Spatulate under-developed.
Seed collecting:
Collect capsules that are maturing, drying and turning brown with hard seeds inside.
Seed cleaning:
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.
Seed viability:
From one collection, the seed viability was high, at 95%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
24400 (0.48 g)
24400 (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.