Seeds of South Australia
Marianthus bignoniaceus (Pittosporaceae)
Orange Bell-climber
List of species for Marianthus
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Seed collecting:
November to January
Herbarium regions:
Southern Lofty, Kangaroo Island
NRM regions:
Adelaide and Mount Lofty Ranges, Kangaroo Island
IBRA regions
Kangaroo Island (KAN01)Kanmantoo
 Rare   (IUCN: RA d(ii))   [relies on fresh water; doesn’t tolerate salinity; west end]
Fleurieu (KAN02) 
 Near Threatened   [restricted range; higher rainfall areas]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Near Threatened   [restricted range; higher rainfall areas]
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [high rainfall spp]
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 Marianthus]
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
3300 (2.3 g)
670 (2.5 g)
20-3016-Mar-2006DJD429
Southern Lofty
1-Aug-2007-18°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
Oct-0790%NANA
1% agar with 250 mg/L gibberellic acid;
16/8;  /  15°C.
Oct-0775%NANA
1% agar with 250 mg/L gibberellic acid;
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)