Seeds of South Australia
Androcalva multiloba (Sterculiaceae)
Wrinkle-leaved Commersonia
List of species for Androcalva
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Seed collecting:
October to November
Herbarium region:
Eyre Peninsula
NRM region:
Eyre Peninsula
IBRA region
Eyre Hills (EYB03)Eyre Yorke Block
 Endangered   (IUCN: LC)
Eyre Mallee (EYB05) 
 Endangered   (IUCN: LC)
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 Androcalva]
Name derivation:
Androcalva from the Greek 'andros' meaning a male and 'calvus' meaning bald, hairless; referring to the glabrous staminodes present in this genus. Multiloba from the Latin 'multus' meaning many and 'lobus' meaning rounded projection; referring to the many serrated lobes on the margin of leaves of this species.
Distribution:
Endemic to South Australia and currently only known from two locations near Cowell on Eyre Peninsula, growing on reddish-brown, clayey sand over granite or white sand, in Melaleuca and Acacia shrubland, with scattered mallee and Triodia.
Status:
Native. Very rare in South Australia.
Plant description:
Erect, spreading perennial shrub to 50 cm tall. Leaves are dark green, wrinkled and covered in fine stellate hairs. Stems are covered in copper coloured hairs. Flowers are white with a red centre. Flowering between August and october.
Fruit type:
Brown globular capsule with four valves, splitting when matured and contain numerous black seeds.
Seed type:
Small black tear-shaped seeds to 1.5 mm long, with small rounded projections on the seed coat.
Embryo type:
Spathulate.
Seed collecting:
Capsules can be collected prior to splitting as long as the seeds inside are hard and black.
Seed cleaning:
Place the capsules in a tray and cover with paper to prevent seeds being lost when explosively 'popping' out. Leave to dry for at least a week. Rub the dried capsules by hand to dislodge the seeds. Use a sieve to rub the fruits and to separate the unwanted material. Store the seeds with a dessicant 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:
These seeds have physical dormancy and can be germinated after pre-treatment such as scarification, nicking or hot water. The pre-treatments remove/breach the physical barrier for moisture uptake.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
8300 (14.86 g)
8300 (14.86 g)
100+17-Oct-2007DJD906
Eyre Peninsula
19-Sep-2008100%+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.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
June 200896%7d14d Seed coat nicked.
Wet filter paper placed over river sand.
Incubated under spring/autumn conditions
June 20080%NANA None.
Wet filter paper placed over river sand.
Incubated under spring/autumn 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)