Seeds of South Australia
Melaleuca bracteata (Myrtaceae)
Black Tea-tree
List of species for Melaleuca
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Seed collecting:
January to December
Herbarium regions:
North Western, Flinders Ranges
NRM regions:
Alinytjara Wilurara, South Australian Arid Lands
IBRA regions
Northern Flinders (FLB05)Flinders Lofty Block
 Rare   (IUCN: RA d(i,ii))   [disjunct population, highly localised; long-lived]
Mann-Musgrave Block (CER01)Central Ranges
 Rare   (IUCN: RA d(ii))   [only found in drainage lines; long-lived]
Tieyon (FIN03)Finke
 Rare   (IUCN: RA d(i,ii))   [only found in drainage lines; long-lived]
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. The first species described is said to have had white branches against a black trunk. Bracteata from the Latin 'bractea' meaning a thin plate; referring to the bracts at the base of the flower.
Distribution:
Found in the far north-west part of South Australia, with some old records from the Gammon Ranges, growing along watercourses or on heavier inland soils in depressions. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Rare in South Australia. Common in the other states.
Plant description:
Shrub or tree to 15 m high with hard, fissured bark. Leaves alternate, narrow-ovate to ovate, to 28 mm long and3  mm wide, 5–11-veined, apex acute to acuminate, glabrous or occasionally pubescent. Flower-spike few to many, to 3.5 cm long. Flowers solitary or in threes within each bract, white.
Fruit type:
Grey-brown, papery, woody cup-shaped capsule to 2.5 mm in diameter, toothed at the rim or eventually truncate, in short spikes on slender leafy stems. 
Seed type:
Tiny brown cylindrical seed to 0.8 mm long and 0.3 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 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
BGA 
MSB
22500
22500
173-Dec-2003PJA 53
North Western
1-Sep-200490%+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.