Coryanthes

Classification System: APG IV

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

Familia: Orchidaceae
Subfamilia: Epidendroideae
Tribus: Cymbidieae
Subtribus: Stanhopeinae
Genus: Coryanthes
Overview of species (65)

C. albertinae – C. alborosea – C. angelantha – C. bahiensis – C. bergoldii – C. bicalcarata – C. boyi – C. bruchmuelleri – C. bueraremensis – C. cataniapoensis – C. cavalcantei – C. dasilvae – C. elegantium – C. elianae – C. feildingii – C. flava – C. gerlachiana – C. gernotii – C. gomezii – C. gustavo-romeroi – C. horichiana – C. hunteriana – C. javieri – C. jorgemarioi – C. kaiseriana – C. lachuensis – C. lafontainei – C. lagunae – C. lanata – C. leferenziorum – C. leucocorys – C. macrantha – C. macrocorys – C. maculata – C. maduroana – C. marcaliana – C. mastersiana – C. melissae – C. minima – C. misasii – C. miuaensis – C. mystax – C. oscarii – C. oscarrodrigoi – C. pacaraimensis – C. panamensis – C. pegiae – C. picturata – C. pilosa – C. recurvata – C. schmidtii – C. seegeri – C. selbyana – C. senghasiana – C. speciosa – C. thivii – C. toulemondiana – C. tricuspidata – C. trifoliata – C. vasquezii – C. velizii – C. verrucolineata – C. vieirae – C. villegasiana – C. wenzeliana
Name

Coryanthes Hook., Bot. Mag. 58: t. 3102 (1831)

Type species: Coryanthes maculata Hook., Bot. Mag. 58: t. 3102 (1831)

Synonymy

Heterotypic
Meliclis Raf., Fl. Tellur. 2: 99 (1837)
Panstrepis Raf., Fl. Tellur. 4: 41 (1838)

Distribution
Native distribution areas:

Northern America
Mexico
Mexico Gulf, Mexico Southwest, Mexico Southeast.
Southern America
Central America
Belize, Costa Rica, Guatemala, Honduras, Nicaragua, Panama.
Caribbean
Trinidad-Tobago.
Northern South America
French Guiana, Guyana, Suriname, Venezuela.
Western South America
Bolivia, Colombia, Ecuador, Peru.
Brazil
Brazil West-Central, Brazil Northeast, Brazil Southeast, Brazil North, Brazil South.

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

Hooker, W.J. 1831. Botanical Magazine 58: t. 3102.
Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (eds.) 2014. Genera Orchidacearum Volume 5: Epidendroideae (Part two); page 407 ff., Oxford: Oxford University Press. ISBN 978-0-19-850713-0

Links

Botanical Garden Munich - Photo collections of Coryanthes
Global Biodiversity Information Facility. 2021. GBIF Backbone Taxonomy. Checklist dataset. Taxon: Coryanthes. Accessed: 2021 May 21.
Govaerts, R. et al. 2021. Coryanthes in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 May 21. Reference page.
Govaerts, R. et al. 2021. Coryanthes in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 May 21. Reference page.
Hassler, M. 2021. Coryanthes. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 May 21. Reference page.
International Plant Names Index. 2021. Coryanthes. Published online. Accessed: 21 May 2021.
Tropicos.org 2021. Coryanthes. Missouri Botanical Garden. Published on the internet. Accessed: 2021 May 21.

Vernacular names

български: Кориантес
English: Bucket orchids
перем коми: Кориантес
коми: Кориантес
lietuvių: Koriantė
олык марий: Кориантес
кырык мары: Кориантес
удмурт: Кориантес

Coryanthes, commonly known as bucket orchids, is a genus of tropical epiphytic orchids. This genus is abbreviated as Crths in horticultural trade. They are native to South America, Central America, Mexico and Trinidad.[1]

Bucket orchids are an excellent example of coevolution and mutualism, as the orchids have evolved along with orchid bees (the tribe Euglossini of the family Apidae) and both depend on each other for reproduction.[2] One to three flowers are borne on a pendant stem that comes from the base of the pseudobulbs. The flower secretes a fluid (see Coryanthes alborosea picture) into the flower lip, which is shaped like a bucket. The male orchid bees (not the females) are attracted to the flower by a strong scent from aromatic oils, which they store in specialized spongy pouches inside their swollen hind legs, as they appear to use the scent in their courtship dances in order to attract females. The bees, trying to get the waxy substance containing the scent, sometimes fall to the fluid-filled bucket. As they are trying to escape, they find that there are some small knobs on which they can climb on, while the rest of the lip is lined with smooth, downward-pointing hairs, upon which their claws cannot find a grip. The knobs lead to a spout (see the Coryanthes leucocorys picture), but as the bee is trying to escape, the spout constricts. At that same moment, the small packets containing the pollen of the orchid get pressed against the thorax of the bee. However, the glue on the pollen packets does not set immediately, so the orchid keeps the bee trapped until the glue has set. Once the glue has set, the bee is let free and he can now dry his wings and fly off. His ordeal may have taken as long as forty-five minutes. Hopefully, the bee will go to another flower, where, if the flower is to be successful at reproducing, the bee falls once again into the bucket of the same species. This time the pollen packets get stuck to the stigma as the bee is escaping, and after a while the orchid will produce a seed pod.

The bee, having stored the aromatic oils in his back legs, can then fly off to mate with a female bee.

History

Some of the first investigations on Coryanthes were published by Cruger in 1865.[3] Charles Darwin describes his observations and experiments on some species of Coryanthes in his book The Various Contrivances by which Orchids are Fertilized by Insects.[4] However, Darwin thought it was the female bees that were doing the fertilizing, and it was almost 100 years before the role of the male euglossine bees were revealed in 1961.[5]
Intergeneric hybrids

Coryhopea (Coryanthes × Stanhopea)

References

Kew World Checklist of Selected Plant Families
Günter Gerlach The genus Coryanthes: A paradigm in ecology March 2011 Lankesteriana 11(3):253-264 DOI: 10.15517/lank.v11i3.18280
H. Cruger (1865) A few notes on the fecundation of orchids and their morphology. J. Linn.Soc.London–Bot.8:127–35
Charles Darwin, D. Appleton (1877) The Various Contrivances by which Orchids are Fertilized by Insects.
Dodson, C. H. and G.P. Frymire (1961) Natural pollination of orchids. Mo. Bot. Gard. Bull. 49(9):133-152