Seeds of South Australia
Poranthera leiosperma (Euphorbiaceae)
Mallee Poranthera
List of species for Poranthera
Click on an image to enlarge it
Seed collecting:
November to January
Herbarium regions:
North Western, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eyre Peninsula, Murray, South Eastern
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [records not databased]
Tintinara (NCP04)Naracoorte Coastal Plain
 Least Concern   [(no records) in Gum Lagoon; comes up after fire (needs fire); short-lived ephemeral]
Southern Flinders (FLB04)Flinders Lofty Block
 Data Deficient   [Likes fire. Taxomic changes.]
Eyre Mallee (EYB05)Eyre Yorke Block
 Data Deficient
South Olary Plain (MDD01)Murray Darling Depression
 Rare   (IUCN: RA d(ii))   [recently split from P microphylla]
Commonwealth Hill (GAW08)Gawler
 Rare   (IUCN: RA d(ii))   [fire responsive]
Maralinga (GVD03)Great Victoria Desert
 Data Deficient
Kintore (GVD04) 
 Near Threatened   [undercollected; new entity]
Yellabinna (GVD06) 
 Data Deficient
Mann-Musgrave Block (CER01)Central Ranges
 Near Threatened   [undercollected; new entity]
Watarru (CER02) 
 Near Threatened   [undercollected; new entity]
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 Poranthera]
Name derivation:
Poranthera from the Greek 'porus' meaning opening or pore and 'anthera' meaning anther; referring to the terminal pores of the anther cells. Leiosperma from the Greek 'leios' meaning smooth and 'spermus' meaning a seed; referring to the smooth white seed.
Distribution:
Found mainly in the north-western part of South Australia, with scattered records in the southern part, growing on sandy mallee areas, open shrubland in sandplains and dunefields. Also found in all mainland states except for Queensland.
Status:
Native. Common in South Australia. Uncommon in Victoria. Common in the other states.
Plant description:
Compact spreading annual herb to 10 cm tall. Leaves alternating along the stems or opposite each other, narrow-obovate, to 15 mm long and 4.1 mm wide, flat, hairless, edges slightly curved under, with blunt tips. Inflorescence in dense rounded clusters at the tops of the stems with male and female inflorescence on the same plant, male flowers white, female flowers pink. This species is similar to Poranthera microphylla which have shorter leaves (6-11 mm long) and the plant is more delicate. Flowering between September and November.
Fruit type:
Depressed globular capsule to 1.8 mm diameter with 3 lobed and 6 seeds.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect individual mature capsules, those that are drying off, fat and contain dark hard seeds or pull out the whole plant (annual) to allow capsules to continue to mature. Green capsules can be collected if the seeds are dark and hard.
Seed cleaning:
Place the capsules in a tray and leave to dry for one to two weeks. Then 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.