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Kangaroo Island Spider Orchid

Caladenia ovata R. S. Rogers

Vascular Plant Endemics on Kangaroo Island

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The Kangaroo Island Spider Orchid (Caladenia ovata) is a vascular endemic plant of Kangaroo Island, Australia. The island, lying within the Indian Ocean off of Australia's southern coast, is classified as part of the Mount Lofty woodlands ecoregion, and is part of Australia's mediterranean climate zone.

Some other major vascular plant endemics of Kangaroo Island are:Gland Flower (Adenanthos terminalis), Kangaroo Island Mallee Ash (Eucalyptus remota), Woolly Bush (Adenanthos sericeus), Kangaroo Island Conesticks (Petrophile multisecta) and the near-endemic Gland Flower (Adenanthos terminalis).

The Beyeria Conservation Park features an assembly of rare plants that thrive on the laterite soils in this location. Important endemics here include the Kangaroo Island Turpentine Bush (Beyeria subtecta), Rough Spider Flower (Grevillea muricata), Small-flowered Daisy-bush (Olearia microdisca), and the near-endemic Kangaroo Island Turpentine Bush (Beyeria subtecta).

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Caladenia ovata

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Caladenia ovata, commonly known as the Kangaroo Island spider orchid is a plant in the orchid family Orchidaceae and is endemic to South Australia. It is a ground orchid with a single hairy leaf and one or two red flowers, sometimes with yellow patches. It is only found on Kangaroo Island and nearby Fleurieu Peninsula.

Description

Caladenia ovata is a terrestrial, perennial, deciduous, herb with an underground tuber and a single, very hairy linear leaf, 50–80 mm (2–3 in) long and 5–8 mm (0.2–0.3 in) wide. One or two red or yellow and red flowers are borne on a spike 100–300 mm (4–10 in) tall. The sepals have fine, club-like glandular tips. The dorsal sepal is 20–25 mm (0.8–1 in) long, about 1.5 mm (0.06 in) wide, turned backwards near it base, then erect or curving forwards. The lateral sepals are 30–35 mm (1.2–1.4 in) long, about 1 mm (0.04 in) wide and spread widely and horizontally near their bases, then turn upwards. The petals are 20–25 mm (0.8–1 in) long, about 2.5 mm (0.1 in) wide and also spread upwards. The labellum is 9–11 mm (0.35–0.43 in) long, 6–7 mm (0.2–0.3 in) wide and red or yellow and red with dark red lines. The sides of the labellum lack teeth and the tip is rolled under. There are four rows of widely spaced calli along the mid-line of the labellum. Flowering occurs from September to November but rarely occurs except after fire.[2][3][4]

Taxonomy and naming

Caladenia ovata was first formally described in 1909 by Richard Rogers and the description was published in Transactions, proceedings and report, Royal Society of South Australia.[1][5] The specific epithet (ovata) is a Latin word meaning "egg-shaped".[6]

Distribution and habitat

Kangaroo Island spider orchid occurs on Kangaroo Island and the Fleurieu Peninsula where it grows singly or in small clumps in thick scrub, often in association with Eucalyptus viminalis.[2][3][7]

Conservation

Caladenia ovata is classified as "vulnerable" under the Commonwealth Government Environment Protection and Biodiversity Conservation Act 1999 (EPBC) Act and as "Endangered" under the South Australian National Parks and Wildlife Act.[7] The main threats are weed invasion, habitat degradation and unsuitable fire regimes.[4]

References

  1. ^ a b c "Caladenia ovata". APNI. Retrieved 27 February 2017.
  2. ^ a b Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 86. ISBN 1877069124.
  3. ^ a b "Caladenia ovata". State Herbarium of South Australia. Retrieved 27 February 2017.
  4. ^ a b "Caladenia ovata" (PDF). Government of South Australia Department for Environment and Heritage. Retrieved 27 February 2017.
  5. ^ Rogers, Richard Sanders (1909). "Notes on the orchids of Kangaroo Island together with a description of two new species". Transactions, Proceedings and Report, Royal Society of South Australia. 33: 16. Retrieved 28 February 2017.
  6. ^ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 296.
  7. ^ a b "Background Paper: Nationally Threatened Plant Species on Kangaroo Island Recovery Action Plan" (PDF). Australian Government Department of the Environment. Retrieved 27 February 2017.
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Caladenia ovata: Brief Summary

provided by wikipedia EN

Caladenia ovata, commonly known as the Kangaroo Island spider orchid is a plant in the orchid family Orchidaceae and is endemic to South Australia. It is a ground orchid with a single hairy leaf and one or two red flowers, sometimes with yellow patches. It is only found on Kangaroo Island and nearby Fleurieu Peninsula.

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Caladenia ovata ( Portuguese )

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Caladenia ovata é uma espécie de orquídea geófita, família Orchidaceae, do sudeste da Austrália,[1] onde cresce em grupos esparsos ou ocasionalmente grandes colônias, em bosques, ou locais de vegetação arbustiva, charnecas, e afloramentos de granito, em áreas de solo bem drenado mas ocasionalmente em áreas sazonalmente alagadiças.[2]

São plantas com uma única folha basal pubescente com marcas proeminentes púrpura perto da base, e uma inflorescência rija, fina e densamente pubescente, com uma ou poucas flores, que vagamente lembram uma aranha, muito estreitas, caudadas, e bem esparramadas, normalmente pendentes. Em conjunto formam grupo bem vistoso quando sua floração é estimulada por incêndios de verão. Pertence a um grupo de espécies tratadas por David Jones como gênero Arachnorchis. Distingue-se por apresentar sépalas e pétalas longas; e labelo pendurado firmemente sem dentes marginais.[2]

Publicação e sinônimos

  • Caladenia ovata R.S.Rogers, Trans. & Proc. Rep. Roy. Soc. South Australia 33: 16 (1909).

Sinônimos homotípicos:

  • Arachnorchis ovata (R.S.Rogers) D.L.Jones & M.A.Clem., Orchadian 13: 395 (2001).
  • Phlebochilus ovatus (R.S.Rogers) Szlach., Polish Bot. J. 46: 15 (2001).

Referências

  1. R. Govaerts et al. World Checklist of Orchidaceae. The Board of Trustees of the Royal Botanic Gardens, Kew.«Published on the Internet» (em inglês). Consultada em 15 de janeiro 2013.
  2. a b David L. Jones (2006). Arachnorchis in Native Orchids of Australia:50-97. Reed Natural History Australia (Publ.) ISBN 9781877069123

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Caladenia ovata: Brief Summary ( Portuguese )

provided by wikipedia PT

Caladenia ovata é uma espécie de orquídea geófita, família Orchidaceae, do sudeste da Austrália, onde cresce em grupos esparsos ou ocasionalmente grandes colônias, em bosques, ou locais de vegetação arbustiva, charnecas, e afloramentos de granito, em áreas de solo bem drenado mas ocasionalmente em áreas sazonalmente alagadiças.

São plantas com uma única folha basal pubescente com marcas proeminentes púrpura perto da base, e uma inflorescência rija, fina e densamente pubescente, com uma ou poucas flores, que vagamente lembram uma aranha, muito estreitas, caudadas, e bem esparramadas, normalmente pendentes. Em conjunto formam grupo bem vistoso quando sua floração é estimulada por incêndios de verão. Pertence a um grupo de espécies tratadas por David Jones como gênero Arachnorchis. Distingue-se por apresentar sépalas e pétalas longas; e labelo pendurado firmemente sem dentes marginais.

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Caladenia ovata ( Vietnamese )

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Caladenia ovata là một loài thực vật có hoa trong họ Lan. Loài này được R.S.Rogers mô tả khoa học đầu tiên năm 1909.[1]

Chú thích

  1. ^ The Plant List (2010). Caladenia ovata. Truy cập ngày 7 tháng 6 năm 2013.

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Caladenia ovata: Brief Summary ( Vietnamese )

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Caladenia ovata là một loài thực vật có hoa trong họ Lan. Loài này được R.S.Rogers mô tả khoa học đầu tiên năm 1909.

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Wikipedia tác giả và biên tập viên
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