Seeds of South Australia
Eucalyptus lansdowneana (Myrtaceae)
Crimson-flowered Mallee Box
List of species for Eucalyptus
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Seed collecting:
January to December
Herbarium region:
Eyre Peninsula
NRM region:
Eyre Peninsula
IBRA region
Gawler Volcanics (GAW02)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 Eucalyptus]
Name derivation:
Eucalyptus from the Greek 'eu' meaning well and 'calyptos' meaning covered; alluding to the cap or lid which covers the stamens in the bud. Lansdowneana named after Thomas Lansdowne Brown (1860-1931), collector of the type specimen and son of the well-known old colonist and geographical explorer Dr. John Browne, where the tree was found on his property Pandura Run in the Gawler Ranges.
Distribution:
Endemic to South Australia and found on the higher, south-western part of the Gawler ranges, growing on rocky slopes and tops of various hills in open mallee vegetation.
Status:
Native. Rare in South Australia.
Plant description:
Multi-stemmed mallee to 6 m high with an open crown and rough, loose bark on the lower stems. Juvenile leaves ovate to broad-lanceolate, dull green. Adult leaves to 180 mm long and 30 mm wide, broad-lanceolate, very glossy, green to yellow-green. Inflorescences terminal in groups of 7 flowers. Bubs to 14 mm long and 7 mm wide, club-shaped with a few ribs or angle, bud-cap cone-shaped. Flowers crimson red aging to pink appearing in winter and spring.
Fruit type:
Woody cylindrical to urn-shaped fruit to 12 mm long and 12 mm wide, lacking individual stalks, with 1-3 longitudinal ribs, disc descending, valves 4-5 below the rim.
Seed type:
Brown ovoid seed to 1.5 mm long and 1.5 mm wide, with fine mesh-like surface.
Embryo type:
Folded.
Seed collecting:
Collect mature fruits that are dark and hard (difficult to break with a finger nail), with the valves un-open any time of year.
Seed cleaning:
Leave the fruits in a breathable container in a dry room for one to two weeks. This allows the valves on the fruit to open and release the seeds. Separate the seeds by placing all the materials into a bucket and shaking it to dislodge the seeds. Pass the material through a sieve to separate the unwanted material. The finer material will contain both seeds (soft) and frass (hard) usually distinguishable from each other but can be very similar in shape and colour. With finer sieves, the seeds can be separated from the frass but this is not essential for storage or propagation. 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 three collections, the seed viability were average to high, ranging from 70% to 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
BGA4500 (3.198 g)103-Oct-2005KHB005
Eyre Peninsula
8-Aug-200690%-18°C
BGA 
MSB
40000 (28.4 g)
40000 (28.4 g)
100+3-Oct-2005KHB002
Eyre Peninsula
8-Aug-200670%-18°C
BGA21000 (10.62 g)20-May-2014DJD2979
Eyre Peninsula
24-Mar-2015100%-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.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
August 2014100%7d14d None
1% water agar
12 hours  /  20 °C C constant
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Incubator conditions:
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)