Seeds of South Australia
Melaleuca leiocarpa (Myrtaceae)
Pungent Honey-myrtle
List of species for Melaleuca
Click on an image to enlarge it
Seed collecting:
January to December
Herbarium regions:
Nullarbor, Gairdner-Torrens, Eyre Peninsula
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands
IBRA regions
Eyre Mallee (EYB05)Eyre Yorke Block
 Rare   (IUCN: RA d(ii))
Gawler Volcanics (GAW02)Gawler
 Rare   (IUCN: RA d(ii))
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(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 Melaleuca]
Name derivation:
Melaleuca from the Greek 'melas' meaning black and 'leucon' meaning white; alluding to the contrasting colours of the bark of the first species described, which is said to have had white branches against a black trunk. Leiocarpa from the Greek 'leios' meaning smooth and 'Karpos' meaning fruit; referring to the fruiting hypanthia of this species being distinctively smooth.
Distribution:
Found in the Gawler Ranges and the northern Eyre Peninsula in South Australia, growing on rocky lateritic soils and red sand on hillslopes, outcrops and sandplains. Also found in Western Australia.
Status:
Native. Rare in South Australia. Common in Western Australia.
Plant description:
Shrub to 5 m high with rough, furrowed, dark grey or grey-black bark. Leaves are spirally arranged, to 21 mm long and 5 mm wide, narrow lance-shaped or linear with a very short stalk and tapering to a sharp point. Inflorescence occur at or near the ends of the branches in cylindrical spike to 15 mm long and 28 mm diameter with up to 3 to 14 yellow-cream flowers. Flowering between August and December.
Fruit type:
Grey-brown smooth, woody spherical capsule to 9 mm diameter, in short loose clusters on woody stem.
Seed type:
Tiny brown rectangular or pyrimid seed to 2.5 mm long and 0.5 mm wide.
Embryo type:
Folded.
Seed collecting:
Collect capsules that are large and hard with closed valves.
Seed cleaning:
Place the capsules in a tray and leave to dry for at least two weeks or until all the valves are open. Then place all the capsules into a bucket with a lid if possible and shake hard to dislodge the seeds from the capsules. Use a sieve to separate the seeds from the capsules. The fine material will contain the seeds and other flowering material. It is very difficult to separate the seeds from this other material as the size, shape and weight are very similar. However the seeds will be a darker brown. 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:
Seeds are non-dormant, viable seed should germinate readily.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA22000 (42.36 g)2020-Sep-2009TST778
Eyre Peninsula
Jun-2010100%-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.