Angiosperms (Flowering Plants) • Earth.com

Caladenia thinicola

(Caladenia thinicola)

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Description

Caladenia thinicola, commonly known as the Scott River spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to four yellowish-green and red flowers with a fringe of long teeth on the sides of the labellumand thick brown, club-like glandular tips on the sepals.Caladenia thinicola is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, 130–260 mm long and 5–7 mm wide. Up to four yellowish-green flowers with red markings and 70–90 mm long and 50–70 mm wide are borne on a stalk 450–500 mm tall. The sepals have thick brown, club-like glandular tips. The dorsal sepal is erect, about 40 mm long and 2 mm wide. The lateral sepals are 40 mm long and 3 mm wide, spread apart from each other and turned downwards. The petals are about 35 mm long and 2 mm wide and curve downwards. The labellum is 15–16 mm long, 12–13 mm wide and yellowish green with a dark red tip which curls downwards. The sides of the labellum have thin greenish teeth up to 8 mm long and there are four crowded rows of dark red calli up to 1.5 mm long, along the mid-line of the labellum. Flowering occurs from September to November.

Taxonomic tree:

Domain:
Kingdom: Plantae
Phylum:
Class: Liliopsida
Order:Asparagales
Family:Orchidaceae
Genus:Caladenia
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