Tolumnia (abbreviated Tolu.Alphabetical List of Standard Abbreviations for Natural and Hybrid Generic Names, RHS, 2017. https://www.rhs.org.uk/plants/pdfs/plant-registration-forms/orchid-name-abbreviations-list.pdf), is a genus in the family Orchidaceae. Previously known as the "equitant oncidiums", the species were segregated from the mega-genus Oncidium by Guido Braem in 1986. Dancing-lady orchid is a common name for some species in this genus.
Distribution The genus is primarily native to the Greater Antilles, with a few species extending into Florida, the Lesser Antilles, Mexico, Central America and northern South America (from Colombia to French Guiana).Kew World Checklist of Selected Plant Families
Description
The plants are small, usually epiphytic, with small or absent pseudobulbs completely covered by leaves, which are triangular or circular in cross section and overlap each other at base to resemble a fan.
The inflorescences arise between the leaf base and bear colorful, showy flowers. The labella are large, ornamented by variously shaped calli. The column bears prominent wings flanking the stigma.
Pollination
Species in the genus are pollinated by oil-collecting bees of the genus Centris. Instead of producing oils as a reward for their pollinators, Tolumnia species instead mimic the oil-producing flowers of Malpighiaceae species. Flowers are self-incompatible. Fragrance strength can vary greatly even within a species.
Species
Tolumnia arizajuliana (Withner & J.Jiménez Alm.) Ackerman, 1997 Tolumnia bahamensis (Nash) Braem, 1986 Tolumnia calochila (Cogn.) Braem, 1986 Tolumnia compressicaulis (Withner) Braem, 1986 Tolumnia gauntlettii (Withner & Jesup) Nir, 1994 Tolumnia guianensis (Aubl.) Braem, 1986 Tolumnia guibertiana (A.Rich.) Braem, 1986 Tolumnia gundlachii (C.Wright ex Griseb.) N.H.Williams & Ackerman, 2007 Tolumnia guttata (L.) Nir, 1994 Tolumnia haitiensis (Leonard & Ames) Braem, 1986 Tolumnia hawkesiana (Moir) Braem, 1986 Tolumnia henekenii (Schomburgk ex Lindl.) Nir, 1994 Tolumnia leiboldi (Rchb. f.) Braem, 1986 Tolumnia lucayana (Nash) Braem, 1986 Tolumnia pulchella (Hook.) Rafinesque, 1837 Tolumnia quadriloba (Schweinf.) Braem, 1986 Tolumnia scandens (Moir) Braem, 1986 Tolumnia sylvestris (Lindl.) Braem, 1986 Tolumnia triquetra (Sw.) Nir, 1994 Tolumnia tuerckheimii (Cogn.) Braem, 1986 Tolumnia urophylla (Loddiges ex Lindl.) Braem, 1986 Tolumnia usneoides (Lindl.) Braem, 1986 Tolumnia variegata (Sw.) Braem, 1986 Tolumnia velutina (Lindl. & Paxton) Braem, 1986
Synonyms
Tolumnia acunae (M. A. Diaz) Nir, 2000 (synonym of: Tolumnia tuerckheimii (Cogn.) Braem, 198) Tolumnia borinquensis Sauleda & Ragan, 1996 (synonym of: Tolumnia variegata (Sw.) Braem, 1986) Tolumnia caymanensis (Moir) Braem, 1986 (synonym of: Tolumnia leiboldii (Rchb.f.) Braem, 1986) Tolumnia lemoniana ssp. lemoniana Braem, 1986 (synonym of: Tolumnia guianensis (Aubl.) Braem, 1986) Tolumnia tetrapetala (Jacq.) Braem, 1986 (synonym of Tolumnia guttata (L.) Nir, 1994 )
Hybrids This list is incomplete. Hybrids of Tolumnia with orchids in other genera are placed in the following nothogenera: Aspaleomnia (Alm.) = Tolumnia × Aspasia × Leochilus Bramiltumnia (Bmt.) = Tolumnia × Brassia × Miltonia Cochlumnia (Ccl.) = Tolumnia × Cochlioda (now Tolumnia × Oncidium = × Oncidumnia) Comparumnia (Cmr.) = Tolumnia × Comparettia Cuitlumnia (Ctn.) = Tolumnia × Cuitlauzina Golumnia (Glm.) = Tolumnia × Gomesa Tolucentrum (Tun.) = Tolumnia × Trichocentrum Toluglossum (Tgl.) = Tolumnia × Odontoglossum Tolumnopsis (Tmp.) = Tolumnia × Miltoniopsis Tolutonia (Tut.) = Tolumnia × Miltonia
References
Nir, M. Orchidaceae Antillanae, 94–97, 2000. Royal Botanic Gardens, Kew : World Checklist of Monocotyledons
External links