Seeds of South Australia
Bertya tasmanica ssp. vestita (Euphorbiaceae)
Mitchell's Bertya
List of species for Bertya
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Seed collecting:
September to February
Herbarium regions:
Eastern, Eyre Peninsula, Northern Lofty, Murray, 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   [edge of range]
Fleurieu (KAN02)Kanmantoo
 Rare   (IUCN: RA d(ii))   [edge of range; in Monarto area]
Olary Spur (FLB03)Flinders Lofty Block
 Critically Endangered   (IUCN: CR D)   (Definite Decline)   [one pop.]
Southern Yorke (EYB01)Eyre Yorke Block
 Critically Endangered   (IUCN: CR B2ab(i,ii,iii); D)   (Definite Decline)
St Vincent (EYB02) 
 Endangered   (IUCN: EN B2ab(i,ii,iii); D)   (Definite Decline)
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
South Olary Plain (MDD01)Murray Darling Depression
 Data Deficient
Murray Mallee (MDD02) 
 Least Concern
Lowan Mallee (MDD04) 
 Least Concern
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(i,ii))
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 Bertya]
Name derivation:
Bertya named after Count Léonce de Lambertye (1810-1877), French botanist and horticulturist from 1834 at Chaltrait. Tasmanica means of or from Tasmania; referring to where the type specimen was collected from. Vestita from Latin meaning to clothe; alluding to the subspecies covering in soft fine hairs.
Distribution:
Found inland in the southern part of South Australia, growing in sandy mallee and mallee-heath communities. Also found in New South Wales and Victoria.
Status:
Native. Common in South Australia. Uncommon the other states.
Plant description:
Erect or spreading multi-stemmed shrub up to 2.5 metres high, young foliage with greyish or yellowish hairs becoming glabrous with age. Leaves are narrow-linear, to 30 mm long and 2 mm wide, glabrous above, with revolute margins almost concealing the yellow brown to greyish hairs undersurface. Inflorescence a single flower or rarely umbelliform with 2 flowers, male flowers sessile, with conspicuous bracts, yellowish with a red tinge, female flowers sessile, light green tinged red to maroon. Flowering between May and December.
Fruit type:
Green ellipsoid or narrow-ovoid capsule to 8.0 mm long covered in white hairs.
Embryo type:
Spatulate.
Seed collecting:
Collect mature capsules, fat, dull green and contain dark, hard seed. Keep a close eye on maturing fruit as it will open and release the seeds quickly.
Seed cleaning:
Place the capsules in a tray and leave to dry for a week or two. Capsules will split and release the seeds or you can gently rub the capsules with a rubber bung to dislodge the seeds. Use a sieves 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 germination:
This species is generally difficult to germinate, it has morphophysiological dormancy and complex germination requirements.