Dendrobium coriaceum

Dendrobium coriaceum, commonly known as the inland rock orchid,[2] is a species of lithophytic orchid that is endemic to North Queensland. It has tapered pseudobulbs, up to three thick, leathery leaves and up to forty yellow or cream-coloured flowers with purple markings on the labellum.

Inland rock orchid
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Tribe: Dendrobieae
Subtribe: Dendrobiinae
Genus: Dendrobium
Species:
D. coriaceum
Binomial name
Dendrobium coriaceum
(D.L.Jones & M.A.Clem.) J.M.H.Shaw[1]
Synonyms[1]

Thelychiton coriaceum D.L.Jones & M.A.Clem.

Description

Dendrobium coriaceum is a lithophytic herb with spreading roots and tapering green to reddish pseudobulbs 150–220 mm (6–9 in) long and 20–30 mm (0.8–1 in) wide. Each pseudobulb has up to three thick, leathery, dark green leaves originating from its top, the leaves 80–160 mm (3–6 in) long and 30–60 mm (1–2 in) wide. Between twenty and forty cream-coloured to yellow flowers 35–55 mm (1.4–2.2 in) long and 35–50 mm (1.4–2.0 in) wide are arranged on a flowering stem 250–550 mm (10–20 in) long. The dorsal sepal is oblong, 20–25 mm (0.79–0.98 in) long and 5–6 mm (0.20–0.24 in) wide. The lateral sepals are 15–20 mm (0.59–0.79 in) long, 5–8 mm (0.20–0.31 in) wide and strongly curved. The petals are linear to oblong, 15–20 mm (0.59–0.79 in) long and about 2 mm (0.08 in) wide. The labellum is cream-coloured with reddish purple streaks, 9–13 mm (0.4–0.5 in) long and wide with three lobes. The sides lobes are erect and curved and the middle lobe has a more or less square-cut tip. Flowering occurs between August and October.[2][3]

Taxonomy and naming

The inland rock orchid was first formally described in 2006 by David Jones and Mark Clements from a specimen collected near Yeppoon. It was given the name Thelychiton coriaceus and the description was published in Australian Orchid Research.[3][4] In 2014, Julian Shaw changed the name to Dendrobium coriaceum.[5] The specific epithet (coriaceum) is a Latin word meaning "of leather",[6] referring to the leaves and fleshy flowers.[3]

Distribution and habitat

Dendrobium coriaceum grows on rocks and cliffs on the Blackdown Tableland and in Carnarvon National Park in Queensland.[2][3]

gollark: Actually, nothing lighter than flea eggs exists whatsoever.
gollark: *But* I also don't want it to unnecessarily add `bee/` to stuff if I just do `cyclogon -cf test.cyc bee` (to recursively add the `bee` folder).
gollark: I basically want to be able to say `cyclogon -cf test.cyc bee/apioform.txt bee/apiary.txt` and have it put in `bee/apioform.txt` at the path `bee/apioform.txt` in the archive.
gollark: <:BEES:825515690613145610> this, *why* am I having significant trouble just implementing a nice frontend for the compressional apiaries?
gollark: They're very small, and all sufficiently small things are equivalent.

References
  1. "Dendrobium biconvexum". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  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. 410. ISBN 1877069124.
  3. Jones, David L.; Clements, Mark A.; Sharma, Ish (2006). "Towards a revision of the Thelychiton speciosus group". Australian Orchid Research. 5 (2): 37–38.
  4. "Thelychiton coriaceus". APNI. Retrieved 4 December 2018.
  5. "Dendrobium coriaceum". APNI. Retrieved 4 December 2018.
  6. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 468.
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