Seeds of South Australia
Nicotiana truncata (Solanaceae)
Moon Plains Tobacco
List of species for Nicotiana
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Seed collecting:
January to December
Herbarium region:
Lake Eyre
NRM region:
South Australian Arid Lands
IBRA region
Oodnadatta (STP02)Stony Plains
 Rare   (IUCN: RA d(ii))
Baltana (STP07) 
 Rare   (IUCN: RA d(ii))   [gypseous, limited habitat]
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 Nicotiana]
Name derivation:
Nicotiana named after Jean Nicot (1530-1600), a French Ambassador for the King of France to Lisbon in 1560, who sent the first tobacco plant to France. Truncata from the Latin 'truncatus' meaning ending abruptly as if cut across; referring to the distinctive truncate calyx tube.
Distribution:
Endemic to South Australia and found between Cooper Pedy and Oodnadatta, growing in saline gyseous soil along creeklines.
Status:
Native. Rare in South Australia.
Plant description:
Annual herb to 50 cm tall with smooth stems and leaves. Leaves mostly in a rosette flat on the ground, only in large vigorous plants are leaves elevated and one present at the first branch of the inflorescence. Leaves to 25 cm long and 15 cm wide, narrowly cuneate below and continuing along the petiole as a narrow wing, apex rounded, somewhat fleshy, shiny green. Inflorescence 1-6 erect spike from the rosette with tubular white flowers. Flowers possibly throughout the year depending on rainfall.
Fruit type:
Papery brown ellipsoid to ovoid capsule to 10 mm long and 7 cm wide, apex projecting above the closely investing truncate calyx, splitting across four valves.
Seed type:
Brown reniform seed to 0.8 mm long and 0.5 mm wide, covered in a net-like surface.
Embryo type:
Linear fully developed.
Seed collecting:
Collect mature capsules, those that are brown or turning a pale straw colour and contain brown seeds. Can collect individual capsules or break off the whole fruit spike.
Seed cleaning:
Place the capsules in a tray and leave to dry for one to two weeks. Then rub the capsules 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 two collections, the seed viability were high, ranging from 90% to 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
16000 (1.1 g)
16000 (1.1 g)
5013-Mar-2007RJB70933
Gairdner-Torrens
1-Aug-200790%+5°C, -18°C
BGA77000 (10.98 g)25+7-Oct-2010TST1056
Lake Eyre
1-Jan-2012100%+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.