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There are about 30,000 species of orchid worldwide making Orchidaceae the largest family of flowering plants. They are found in a diverse range of habitats.

Orchids have distinctive flowers, consisting of three sepals and three petals. The third petal is greatly modified into a specialised structure known as a labellum. Another distinctive feature is the column, a fusion of the sexual parts of the flower (stamens and style) into a fleshy structure. Most terrestrial orchids grow from a tuber which is replaced each year.

Some orchids are designated as rare and endangered plants. Others, although reasonably common, are very localised in their occurence. All orchids are protected species and should not be disturbed in their native habitat. For these reasons all orchids have been included as rare or sensitive plants.

180 species

Bunochilus sp. (Leafy Greenhood)

Bunochilus sp.
Bunochilus sp.
Bunochilus sp.
Bunochilus sp.
Bunochilus sp.
Bunochilus sp.

Caladenia applanata (Broad-lipped Spider Orchid)

Caladenia arenicola (Carousel Spider Orchid)

Caladenia arrecta (Reaching Spider Orchid)

Caladenia atrochila (Dark-Heart Caladenia)

Caladenia caesarea (Mustard Orchid)

Caladenia campestris (Plains Sun Orchid)

Caladenia chamaephylla (Red-leaf Fingers)

Caladenia citrina (Margaret River Spider Orchid)

Caladenia coactilis (Flinders Ranges Caladenia)

Caladenia concinna (Neat Spider Orchid)

Caladenia corynephora (Club-lipped Spider Orchid)

Caladenia crebra (Arrowsmith Spider Orchid)

Caladenia cruscula (Reclining Spider Orchid)

Caladenia decora (Esperance King Spider Orchid)

Caladenia ensata (Stumpy Spider Orchid)

Caladenia erythronema (Red-thread Spider Orchid)

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Conservation Level

  • Rare or uncommon Native (change?)


  • All invasiveness levels (change?)

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2,090,688 sightings of 18,679 species in 5,474 locations from 9,594 contributors
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