Seeds of South Australia
Aotus subspinescens (Leguminosae)
Dune Aotus
List of species for Aotus
Click on an image to enlarge it
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 'otos' 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.