Seeds of South Australia
Cardamine tenuifolia (Cruciferae)
Slender Bitter-cress
List of species for Cardamine
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Seed collecting:
December to May
Herbarium regions:
Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Vulnerable   (IUCN: VU D2)   [under surveyed]
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)
Glenelg Plain (NCP02) 
 Rare   (IUCN: RA d(i,ii))   [water dependant]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Data Deficient   [questionable occurance, Thomas Gully Mt Bold, D Duval]
Gawler Volcanics (GAW02)Gawler
 Data Deficient   [Checked by Helmutt & Helen]
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 Cardamine]
Name derivation:
Cardamine from the Greek 'kardamon' a name given by Dioscorides for a species of cress, an Indian spice and derived from the Greek 'cardia' meaning heart and 'damaein' meaning to blind; alluding to the reputed heart-strengthening effects of the plant. Tenuifolia from the Latin tenuis meaning slender and 'folium' meaning a leaf; referring to the species having slender leaves.
Distribution:
Found in the southern Mount Lofty Ranges and the lower South-east in South Australia, growing in swamps and stream. Also found in New South Wales, Victoria and Tasmania.
Status:
Native. Rare in South Australia. Rare in New South Wales and Victoria. Common in Tasmania.
Plant description:
Elongate, glabrous perennial herb to 50 cm or more high, often with numerous fine fibrous roots arising from lower stems, stems weak, trailing. Leaves predominantly along the stems to 6 cm long (lower leaves not persisting), pinnate with 1–5 pairs of lateral pinnae, terminal and lateral pinnae filiform. Flowers along a spike with white flowers. Flowering between October and March.
Fruit type:
Long pale brown pods, splitting into two.
Seed type:
Oragne flat reniform seeds to 2 mm long and 1 mm wide with a slight wing around the margin.
Embryo type:
Bent.
Seed collecting:
Collect maturing pods those turning pale brown with orange seeds inside. Be gentle with the pods as they split open easily.
Seed cleaning:
Place the pods in a tray and cover with paper to prevent seeds from popping out and leave to dry for a week. Then rub the dried pods 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:
From one collection, the seed viability was high, at 95%.
Seed germination:
This species has physiological dormancy that need to be overcome for the seed to germinate.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
7000 (2.6 g)
7000 (2.6 g)
100+12-Dec-2007DJD1011
South Eastern
19-Sep-200895%+5°C, -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.