Seeds of South Australia
Phyllangium sulcatum (Loganiaceae)
Rock Mitrewort
List of species for Phyllangium
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Seed collecting:
September to December
Herbarium regions:
Flinders Ranges, Eyre Peninsula
NRM regions:
Eyre Peninsula, South Australian Arid Lands
IBRA regions
Southern Flinders (FLB04)Flinders Lofty Block
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Central Flinders (FLB06) 
 Vulnerable   (IUCN: VU D2)   [localised; comes up after fire, ephemeral]
Eyre Hills (EYB03)Eyre Yorke Block
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Definite Decline)
Talia (EYB04) 
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Definite Decline)
Eyre Mallee (EYB05) 
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Definite Decline)
Myall Plains (GAW01)Gawler
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Definite Decline)
Gawler Volcanics (GAW02) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Definite Decline)
Yellabinna (GVD06)Great Victoria Desert
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Definite Decline)
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 Phyllangium]
Name derivation:
Phylangium from the Greek 'phyllon' meaning a leaf and 'angion' meaning a vessel; referring to the foliaceous involucre surrounding the flowers. Sulcatum from the Latin 'sulcatus' meaning grooved, furrowed or channelled; alluding to the grooves on the surface od the seed.
Found on northern Eyre peninsula and the Flinders Ranges in South Australia, growing in sheltered, rocky areas on shallow soils overlaying rock. Also found in Western Australia and New South Wales. Known in Victoria from a single specimen collected in 1853 and labelled simply 'Grampians', now presumed extinct.
Native. Rare in South Australia. Rare in New South Wales. Common in Western Australia. Presumed extinct in Victoria.
Plant description:
Annual, erect herb to 17 cm high with weak, terete and glabrous branches. Leaves to 13 mm long and 4 mm wide, elliptic, ovate or narrowly ovate, glabrous or with a few hairs, margin flat, apex acute. Flowers in groups on very long stalk in upper axils, white. Flowering between August and November.
Fruit type:
Pale brown , semi-flat capsule to 2.5 mm long.
Seed type:
Black ovoid seed to 0.75 mm long and 0.5 mm wide, with deep wrinkled surface.
Embryo type:
Linear under-developed.
Seed collecting:
Collect maturing capsules, those that are fat, turning a straw colour and contain hard black seeds or collect whole stems with many maturing capsules.
Seed cleaning:
Place the capsules/stems in a tray and leave to dry for one to two weeks. Then rub the capsules/stems gently by hand or with a rubber bung to dislodge the seeds. Use a sieve to separate the unwanted material. Be very careful as the seeds are very small. 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%.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
6000 (0.52 g)
6000 (0.5 g)
Eyre Peninsula
Jun-2010100%+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.