Seeds of South Australia
Aotus subspinescens (Leguminosae)
Dune Aotus
List of species for Aotus
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Seed collecting:
November to December
Herbarium regions:
Gairdner-Torrens, Eyre Peninsula, Murray, Yorke Peninsula, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
Tintinara (NCP04)Naracoorte Coastal Plain
 Least Concern
Fleurieu (KAN02)Kanmantoo
 Critically Endangered   (IUCN: CR D)   [limited habitat; edge of range; sandy, heathy habitat, in Newland Head]
Southern Yorke (EYB01)Eyre Yorke Block
 Vulnerable   (IUCN: VU B2ab(iii))   (Probable Decline)
Eyre Hills (EYB03) 
 Least Concern   [likes sandhills]
Eyre Mallee (EYB05) 
 Least Concern   [likes sandhills]
South Olary Plain (MDD01)Murray Darling Depression
 Near Threatened   [edge of range]
Murray Mallee (MDD02) 
 Least Concern
Lowan Mallee (MDD04) 
 Least Concern
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(i,ii))
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(i,ii))
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(i,ii))
Yellabinna (GVD06)Great Victoria Desert
 Least Concern
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 Aotus]
Name derivation:
Aotus from the Greek 'a' meaning without and 'otis' meaning an ear, referring to the genus flowers not having certain calyx appendages, (floral bracts), that are present in the closely related genus Pultenaea; subspinescens from Latin meaning becoming spiny, alluding to the short spine at the end of branches.
Distribution:
Found in the southern part of South Australia on Eyre and York Peninsulas and Murray region on sandy soil. Also found in New South Wales and Victoria.
Status:
Native. Common in South Australia. Common in Victoria. Uncommon in New South Wales.
Plant description:
A variable shrub to 0.6m high with short branches, often ending in short spines; stems with hairs usually short and curved. Leaves in whorls of 3 or more; opposite or alternate; narrow-linear to 10mm long and 1mm wide; margins revolute with upper surface becoming glabrous; lower surface with scattered long hairs. Pea flowers; 1 or 2 in upper leaf axils;  yellow and red with crimson to purple keel.
Fruit type:
Ovoid semi-flat pod to 6mm long.
Seed type:
Dark brown mottled, reniform seed to 2.5mm long and 2mm wide.
Embryo type:
Bent.
Seed collecting:
Collect mature pods that are turning brown, with hard, dark seeds inside.
Seed cleaning:
Place the pods in a tray and leave to dry for 1-2 weeks or until the pods begin to split. Then rub the dried pods to dislodge the seeds. Use a sieve to separate any 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 physical dormancy that needs to be overcome for the seed to germinate (e.g. nicking or softening the seed coat).
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
4590 (14.38 g)
4590 (14.38 g)
50+8-Dec-2005DJD312
Gairdner-Torrens
7-Aug-2006100%-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.