Magnificent spider orchid
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Genus: Caladenia
Species:
C. magnifica
Binomial name
Caladenia magnifica
Synonyms[1]
  • Arachnorchis magnifica (Nicholls) D.L.Jones & G.W.Carr
  • Calonema magnificum (Nicholls) Szlach.

Caladenia magnifica, commonly known as the magnificent spider orchid is a species of orchid endemic to Victoria. It has a single leaf and one or two reddish crimson or yellow flowers streaked with crimson and with dark reddish tips. It has not been sighted since 1979 and is presumed to be extinct.

Description

Caladenia magnifica is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect leaf, 100–150 mm (4–6 in) long and 15–20 mm (0.6–0.8 in) wide. One or two reddish crimson, or yellow flowers streaked with crimson, 70–100 mm (3–4 in) wide are borne on a stalk 200–300 mm (8–10 in) tall. The sepals and petals have long, dark reddish, thread-like tips. The dorsal sepal is erect, 70–100 mm (3–4 in) long and 3–4 mm (0.1–0.2 in) wide. The lateral sepals are 70–100 mm (3–4 in) long, 4–6 mm (0.16–0.24 in) wide and spreading with drooping ends. The petals are 60–80 mm (2–3 in) long and 2–4 mm (0.08–0.2 in) wide and arranged like the lateral sepals. The labellum is 18–22 mm (0.7–0.9 in) long, 16–18 mm (0.6–0.7 in) wide and dark reddish-purple. The tip of the labellum is curled under and the sides are turned up and have many purplish teeth up to 4 mm (0.2 in) long. There are four or six rows of reddish-purple calli up to 2 mm (0.08 in) long in the centre of the labellum. Flowering occurs from September to October.[2][3][4]

Taxonomy and naming

The magnificent spider orchid was first described in 1936 by William Nicholls and given the name Caladenia patersonii var. magnifica and the description was published in The Victorian Naturalist.[5][4] In 1989 David Jones and Geoffrey Carr raised it to species status.[1][6] The specific epithet (magnifica) is a Latin word meaning "noble", "eminent" or "splendid".[7]

Distribution and habitat

The magnificent spider orchid occurs in the Clydesdale district near Guildford in central Victoria where it grows in open forest with a sparse understorey. It has not been seen since 1979 and is presumed to be extinct.[2][3]

Conservation

Caladenia magnifica is classified as "extinct" under the Victorian Government Flora and Fauna Guarantee Act 1988.[3]

References

  1. 1 2 3 "Caladenia magnifica". APNI. Retrieved 20 February 2017.
  2. 1 2 Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 57. ISBN 1877069124.
  3. 1 2 3 Jeanes, Jeff. "Caladenia magnifica". Royal Botanic Gardens, Victoria: vicflora. Retrieved 20 February 2017.
  4. 1 2 Nicholls, William Henry (1936). "Orchid Notes: Two new varieties". The Victorian Naturalist. 52: 167. Retrieved 20 February 2017.
  5. ↑ "Caladenia patersonii var. magnifica". APNI. Retrieved 20 February 2017.
  6. ↑ Clements, Mark Alwyn (1989). "Catalogue of Australian Orchidaceae". Australian Orchid Research. 1: 27.
  7. ↑ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 504.
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