Rhomboda

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Ordo: Asparagales

Familia: Orchidaceae
Subfamilia: Orchidoideae
Tribus: Cranichideae
Subtribus: Goodyerinae
Genus: Rhomboda
Overview of species (23)

R. abbreviata – R. alticola – R. arunachalensis – R. atrorubens – R. bantaengensis – R. blackii – R. cristata – R. dennisii – R. elbertii – R. fanjingensis – R. kerintjiensis – R. lanceolata – R. longifolia – R. minahassae – R. moulmeinensis – R. pauciflora – R. petelottii – R. polygonoides – R. pulchra – R. tokioi – R. velutina – R. wardii – R. yakusimensis
Name

Rhomboda Lindl., J. Proc. Linn. Soc., Bot. 1: 181 (1857)

Type species: Rhomboda longifolia Lindl., J. Proc. Linn. Soc., Bot. 1: 181 (1857)

Distribution
Native distribution areas:

Asia-Temperate
China
China South-Central, Hainan, China Southeast, Tibet.
Eastern Asia
Japan, Nansei-shoto, Taiwan.
Asia-Tropical
Indian Subcontinent
Assam, East Himalaya, Nepal.
Indo-China
Myanmar, Thailand, Vietnam.
Malesia
Borneo, Jawa, Lesser Sunda Islands, Malaya, Maluku, Philippines, Sulawesi, Sumatera.
Papuasia
Bismarck Archipelago, New Guinea, Solomon Islands.
Australasia
Australia
Queensland.
Pacific
Southwestern Pacific
Vanuatu.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Lindley, J. (1857) Journal of the Linnean Society, Botany 1: 181.
Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (eds.) 2003. Genera Orchidacearum Volume 3: Orchidoideae (Part two); page 142 ff., Oxford: Oxford University Press. ISBN 0-19-850711-9

Links

'eFloras 2009. Rhomboda in Flora of China vol. 25 Orchidaceae --> pdf Rhomboda
Emonocot.org 2018. Rhomboda in The Orders and Families of Monocotyledons. Published online. Accessed: 2018 September 4.
Govaerts, R. et al. 2018. Rhomboda in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2018 September 4. Reference page.
International Plant Names Index. 2018. Rhomboda. Published online. Accessed: 4 September 2018.
The Plant List 2013. Rhomboda in The Plant List Version 1.1. Published online. Accessed: 2018 September 4.
Tropicos.org 2018. Rhomboda. Missouri Botanical Garden. Published online. Accessed: 4 September 2018.

Vernacular names

Rhomboda, commonly known as velvet jewel orchids,[3] is a genus of about twenty species of flowering plants in the orchid family Orchidaceae. Plants in this genus are mostly terrestrial herbs with a fleshy, creeping rhizome and a loose rosette of green to maroon coloured leaves. Small resupinate or partly resupinate, dull coloured flowers are borne on a hairy flowering stem. The dorsal sepal and petals overlap and form a hood over the column and there is a deep pouch at the base of the labellum. They are found in tropical regions from northern India through Southeast Asia, China, Japan to Australia and some Pacific Islands.

Description

Orchids in the genus Rhomboda are usually terrestrial, perennial, deciduous, sympodial herbs with a creeping, fleshy, above-ground rhizome anchored to the ground by wiry roots. A few species are epiphytic. The leaves are spirally arranged around the stem with the upper leaves forming a loose rosette. They are dark green to maroon or brownish with a central white or red line. The flowers are resupinate or partly resupinate with the dorsal sepal and petals fused to form a hood over the column. The lateral sepals are similar to the dorsal sepal, free and often spreading. The labellum has a deep pouch near its base, a narrow middle section and often has a hooked tip.[3][4][2][5][6]
Taxonomy and naming

The genus Rhomboda was first formally described in 1857 by John Lindley and the description was published in Journal of the Linnean Society, Botany.[1][7] The name Rhomboda is derived from the Ancient Greek word rhombos meaning "a top",[8] referring to the shape of the calli on the labellum of the type specimen.[4]
Distribution

Orchids in the genus Rhomboda are native to Nepal, India, Sri Lanka, Bhutan, China, Myanmar, Thailand, Laos, Cambodia, Vietnam, Japan, the Philippines, New Guinea, New Caledonia, the Solomon Islands, Vanuatu and Queensland between the Daintree and Paluma.
Species list

The following is a list of species accepted by the World Checklist of Selected Plant Families as at August 2018:[1]

Rhomboda abbreviata (Lindl.) Ormerod - Guangdong, Guangxi, Guizhou, Hainan, Assam, Myanmar, Nepal, Thailand
Rhomboda alticola (Schltr.) Ormerod - New Guinea
Rhomboda arunachalensis A.N.Rao - Arunachal Pradesh
Rhomboda atrorubens (Schltr.) Ormerod - New Guinea, Bismarck Archipelago
Rhomboda bantaengensis (J.J.Sm.) Ormerod - Sulawesi
Rhomboda blackii (Ames) Ormerod - Mindanao
Rhomboda cristata (Blume) Ormerod - Java, Philippines
Rhomboda dennisii Ormerod - Vanuatu, Solomon Islands
Rhomboda elbertii Ormerod - Sulawesi
Rhomboda fanjingensis Ormerod - Guizhou
Rhomboda kerintjiensis (J.J.Sm.) Ormerod - Sumatra
Rhomboda lanceolata (Lindl.) Ormerod - Darjiling, Bhutan, Assam, Arunachal Pradesh, Myanmar, Vietnam, Peninsular Malaysia, Philippines, Sulawesi, Sumatra, New Guinea, Kyushu
Rhomboda longifolia Lindl. - Sikkim
Rhomboda minahassae (Schltr.) Ormerod - Sulawesi
Rhomboda moulmeinensis (C.S.P.Parish & Rchb.f.) Ormerod - Guangxi, Guizhou, Sichuan, Tibet, Yunnan, Myanmar, Thailand
Rhomboda pauciflora (Ridl.) Ormerod - Vietnam, Peninsular Malaysia, Sabah
Rhomboda petelottii (Gagnep.) Ormerod - Vietnam
Rhomboda polygonoides (F.Muell.) Ormerod - Queensland, New Guinea, Maluku, Solomon Islands, Bismarck Archipelago, New Caledonia
Rhomboda pulchra (King & Pantl.) Ormerod & Av.Bhattacharjee
Rhomboda tokioi (Fukuy.) Ormerod - Guangdong, Taiwan, Japan, Ryukyu Islands, Vietnam
Rhomboda velutina (J.J.Sm.) Ormerod - Java, Lesser Sunda Islands
Rhomboda wardii Ormerod - Myanmar
Rhomboda yakusimensis (Masam.) Ormerod - Ryukyu Islands, Izu Islands, Kyushu

References

"Rhomboda". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
D.L.Jones; T.Hopley; S.M.Duffy (2010). "Rhomboda". Australian Tropical Rainforest Orchids. Centre for Australian National Biodiversity Research (CANBR), Australian Government. Retrieved 29 May 2021.
Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 349. ISBN 1877069124.
Alec M. Pridgeon; Phillip J. Cribb; Mark W. Chase; Finn N. Rasmussen, eds. (2003). Genera orchidacearum (Volume 3). Oxford University Press. pp. 142–145. ISBN 0198507119.
"Rhomboda". Flora of China. Retrieved 4 September 2018.
"Genus Rhomboda". Orchids of New Guinea. Retrieved 4 September 2018.
Lindley, John (1825). "The Orchidology of India". Journal of the Linnean Society, Botany. 1: 181. Retrieved 4 September 2018.
Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 227.