The vegetation is dominated by dry sclerophyll
Eucalyptus forests, consisting primarily of Blackbutt mixed
with Smooth Barked Apple, Sydney Peppermint, White
Stringy Bark, tallowwood, Narrowleaf White Mahogany,
Sydney Blue Gum, Forest Oak, Grey Gum, Red
Bloodwood, Spotted Gum with Turpentine and
Brushbox found in more sheltered sites.
The understory is very open with grasses, bracken
fern and some herbaceous plants.
Because of the close proximity to a population center,
frequent hazard reduction burns have made the understory drier,
with an absence of regeneration.
The upper slopes consisting of rock, has
numerous epiphytic plants growing in the crevices. Moreton Bay
Figs, grass trees, ferns and numerous orchids can
be found.
A small group of ground orchids is saprophytes,
plants that are usually leafless and have no chlorophyll to utilize
sunlight for growth.
The Helmet
Orchid.
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They are not parasitic, but live on dead and decaying
matter, relying on the help of soil fungi which live within their fleshy
roots to absorb nutriment. Saprophytes, including the widespread hyacinth
orchid, Dipodium punetatum, and the potato orchid, Gastrodia
seamoides, are usually found where the soil is rich in organic matter.
Other non-saprophytic orchids also enjoy a symbolic relationship with
fungi but not to the same extent.
Strangest of all the saprophytes are the two unique
and very rare Australian underground orchids. One in Western
Australia, Rhizanthella gardneri, was turned up by a plough at
Corrigin in 1928. The eastern underground orchid,
Cryptanthemis slateri, was first found in 1931 on the lower
slopes of the mountain at Bulahdelah in New South Wales.
Both live, bloom, and are pollinated underground, the flowers of the
western variety appearing above the soil when the seeds are ripe for
dispersal.
Also of interest, is the naturally occurring orchid
hybrid, Dendrobium delicatum, that differs in habitat and flora
characteristics from other hybrids of that type.
The natural forest environment supports a large a
varied range of wildlife with wallabies, kangaroos,
possums and bandicoots being the most frequently seen.
The number of native animals is diminished by the impact
of domestic or feral animals from the surrounding developed area. In
recent years these impacts are less as the local community has embraced
the ownership of 'their' mountain.