Seeds of South Australia
Cuphonotus andraeanus (Cruciferae)
Downy Mother-of-misery
List of species for Cuphonotus
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Seed collecting:
September to November
Herbarium regions:
North Western, Lake Eyre
NRM regions:
Alinytjara Wilurara, South Australian Arid Lands
IBRA regions
Breakaways (STP01)Stony Plains
 Rare   (IUCN: RA d(ii))   [likes rich red soils; locally common]
Everard Block (CER03)Central Ranges
 Rare   (IUCN: RA d(ii))   [likes rich red soils; locally common]
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 Cuphonotus]
Name derivation:
Cuphonotus from the Greek 'kyphos' meaning bent, humped, curved and 'notos' meaning the back, referring to the pod-valves being rounded on the back. Andraeanus named after Hans Andrae (1883-1890), who collected plants from around Pulpulla and Cobar in New South Wales.
Distribution:
Found in far north around Marla in South Australia growing on red loam soil. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Rare in South Australia. Uncommon in Northern Territory. Common in the other States.
Plant description:
Annual herb with branched inflorescences to 25 cm high, hairy; hairs simple, flattened, terete or twisted. Basal leaves linear to spatulate, to 30 mm long, entire, almost succulent; stem leaves reducing. Flower-spike terminal with white, pink or yellow flowers. Flowering between August to September.
Fruit type:
Red-brown elliptic pod to 5 mm long, compressed, almost smooth.
Seed type:
Orange flat reniform seed to 1.5 mm long and 1 mm wide.
Embryo type:
Bent.
Seed collecting:
Collect maturing pods, those turning reddish brown with orange seeds inside. Be gentle with the pods as they split open easily. Whole plant can also be collected.
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 100%.
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
4800 (1.86 g)
4800 (1.86 g)
20+2-Nov-2010TST1084
North Western
1-Jan-2012100%-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.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Jun-17100%1414 500 mg/L gibberellic acid for 24 h;
1% agar;
Incubated under winter conditions
Jun-172%14NA 500 mg/L gibberellic acid for 24 h;
1% agar;
Incubated under spring/autumn conditions
Jun-170%NANA seeds leached in water for 24 h;
1% agar;
Incubated under spring/autumn conditions
Jun-170%NANA seeds leached in water for 24 h;
1% agar;
Incubated under winter conditions
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Incubator conditions:
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)