Mesadenus

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Mesadenus
Gray ladies'-tresses, Florida, US imported from iNaturalist photo 58394583.jpg
Mesadenus lucayanus
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Cranichideae
Subtribe: Spiranthinae
Genus: Mesadenus
Schltr.

Mesadenus is a genus of flowering plants from the orchid family, Orchidaceae. It contains five currently recognized species, native to Mexico, Central America, the West Indies, and Florida. [1]

Contents

  1. Mesadenus chiangii (M.C.Johnst.) Garay - Coahuila
  2. Mesadenus lucayanus (Britton) Schltr. - widespread across Mexico, Florida, Guatemala, West Indies
  3. Mesadenus perezii R.González & Lizb.Hern. – western Mexico (Aguascalientes and Jalisco)
  4. Mesadenus polyanthus (Rchb.f.) Schltr. - Mexico, Belize
  5. Mesadenus tenuissimus (L.O.Williams) Garay - Morelos

A phylogenetic study published in 2019 found that the genus as then circumscribed was polyphyletic and the two Brazilian species, M. glaziovii and M. rhombiglossus, which were geographically disjunct from the other species, were also genetically distinct. They were placed in the new genus Espinhassoa as Espinhassoa glaziovii and E. rhombiglossa. [2]

See also

References

  1. "Mesadenus Schltr". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 30 July 2025.
  2. Gerardo A. Salazar, João A. N. Batista, Thiago E. C. Meneguzzo, Lidia I. Cabrera, Coyolxauhqui Figueroa, Laura Calvillo-Canadell, Aline A. do Vale, and Rolando Jiménez-Machorro "Polyphyly of Mesadenus (Orchidaceae, Spiranthinae) and a New Genus from the Espinhaço Mountains in , Southeastern Brazil," Systematic Botany 44(2), 282-296, (30 May 2019). https://doi.org/10.1600/036364419X15562054132974

Wikispecies-logo.svg Data related to Mesadenus at Wikispecies