Caladenia dundasiae, commonly known as the Patricia's spider orchid and Dundas spider orchid is a species of orchidendemic to a small area in the south-west of Western Australia. It is a rare orchid with a single hairy leaf and one or two, usually red flowers with thin, stiffly-held lateralsepals and petals.
Caladenia dundasiae has a single erect, hairy leaf, Шаблон:Convert long and Шаблон:Convert wide. One or two flowers Шаблон:Convert wide are borne on a stalk Шаблон:Convert high. The flowers are red or sometimes pink or cream-coloured. The dorsal sepal is erect, Шаблон:Convert long and Шаблон:Convert wide at the base. The lateral sepals are a similar size to the dorsal sepal but are widely separated and held stiffly at a downward angle. The petals are similar to the lateral sepals but slightly shorter and narrower. The labellum is Шаблон:Convert long and Шаблон:Convert wide and red with a white or cream-coloured base and short, forward-facing teeth on its sides. There are two rows of red and white calli along the centre of the labellum. Flowering occurs from July to August.[1][2][3]
This species is similar to C. erythrochila but has more stiffly-held and shorter sepals and petals.[2]
Caladenia dundasiae is classified as "Priority One" by the Western Australian Government Department of Parks and Wildlife,[6] meaning that it is known from only one or a few locations which are potentially at risk.[7]
