Eucalyptus from the Greek 'eu' meaning well and 'calyptos' meaning covered, alluding to the cap or lid which covers the stamens in the bud. Wyolensis named after the Wyola Lakes region in the Great Victoria Desert, where the species occurs.
Distribution and status
Endemic to South Australia and restricted to a few locations in the Great Victoria Desert growing on deep red sand on plains in open mallee vegetation. Native. Very rare in South Australia.
Herbarium region: North Western
NRM region: Alinytjara Wilurara
AVH map: SA distribution map (external link)
Multi-stemmed mallee to 7 m tall with rough, fibrous, grey to grey-brown bark on lower stems and smooth, tan to grey to cream bark above. Branchlets waxy; juvenile leaves ovate, waxy, dull greyish. Mature crown composed of juvenile leaves to 85 mm long and 64 mm wide, opossite paired, stalkless, waxy, ovate, dull, greyish. Flowers axillary in groups of 9-11. Buds to 18 mm long and 8 mm wide, waxy, bud-cap horn-shaped longer than the base. Flowers pale yellow appearing sporadically following rain. Fruits are round to barrel-shaped fruit to 11 mm long and 10.5 mm wide, waxy when young, disc descending, valves 3 or 4 below the rim. Seeds are dark brown ovoid seed to 3 mm long and 2.5 mm wide, with smooth surface. Seed embryo type is folded.
Seed collection and propagation
Collect seeds between January and December. Collect mature fruits that are dark and hard (difficult to break with a finger nail), with the valves un-open any time of year. 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. From two collections, the seed viability was high, at 100%. Seeds are non-dormant, viable seed should germinate readily.
|Location||No. of seeds|
|10,000 (15.8 g)|
10,000 (15.8 g)
|3,900 (5.82 g)|
3,900 (5.83 g)
|Date||Result||T0||T50||Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod|
12/12; / 20Â°C