Olearias

Tarra Bulga National Park has three different species of Olearia which are members of the daisy family. Two of them can be a little tricky to tell apart, however one is clearly different to the others. From casual observation all of them have similar looking flowers and the best way to tell them apart is by examining the leaves.

Olearia lirata – (Snowy daisy-bush) is a very common species in the park, although it is not usually present in the rainforest gullies; it is a dominant shrub in the wet sclerophyll forest areas (which is the most common vegetation type in the park). It is a small to medium sized shrub and its medium sized leaves are lance shaped and usually green and shiny above and grey and hairy underneath.

Olearia phlogopappa – (Dusty daisy-bush) is less common in the park than Olearia lirata and is  and mostly found in the more disturbed areas; it is also a small to medium sized shrub. It has narrower leaves, that are more greyish and not shiny (hence dusty) with tiny hairs on the underside. The leaves also usually have blunt teeth along their margins.

Olearia argophylla – (Musk daisy-bush)is the third species. It is a large shrub almost to the size of a small tree. Its leaves are much broader and larger than the other two species, they are green on the top and whitish or silvery underneath. It can occur in all forest types within Tarra Bulga, including the rainforest gullies.

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Clematis Season

There are two species of Clematis that occur in Tarra Bulga National Park and surrounding forest areas, Forest Clematis (Clematis glycinoides) and Mountain Clematis (Clematis aristata) and it can be very difficult to tell the difference between them. They are climbing plants that can climb high into trees and produce a mass of attractive white flowers in Spring. Both of them have leaves in groups of three of a similar size, Clematis aristata commonly has teeth or serrations on the leaf margins but both species show variation.

Clematis leaf comparison

There are two main ways to tell the difference between the two out in the field. The first is flowering time. Clematis glycinoides tends to flower in early spring, with most of its flowering finished by mid-October, then Clematis aristata seems to take over to be the dominant flowering species for a month or so, although locally it is less common. The other way is a key but subtle difference in the flowers. If you look carefully at a flower the tips of the anthers have little appendages, In Clematis glycinoides they are very short <1mm or even absent. In Clematis aristata they are clearly longer usually around 2 or 3mm long.

Clematis Flowers
Clematis glycinoides (Forest Clematis) and Clematis aristata (Mountain Clematis) flowers compared.
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