Oerstedina

Oerstedina is a genus of epiphytic flowering plants in the family Gesneriaceae, native to Mexico, Costa Rica and Panama. The relationship of Oerstedina to the genus Rufodorsia is uncertain, as of April 2021.

Oerstedina
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Gesneriaceae
Subfamily: Gesnerioideae
Genus: Oerstedina
Wiehler[1]
Species

See text.

Description

Species of Oerstedina are epiphytic perennial plants, with upright or hanging stems. The flowers comprising the inflorescence are tightly arranged in the leaf axils. The fused petals (corolla) are white to pinkish in colour and form a short, rather inflated tube. The fruit is a pointed berry. The genus is distinguished from Rufodorsia by the inflated shape of the corolla and lack of a reddish colour on its back, and by the pointed shape of the berry.[2]

Taxonomy

The genus was erected by Hans Joachim Wiehler in 1977, initially with two new species. The genus name honours Anders Sandøe Ørsted, a Danish botanist who explored and collected in the neotropics between 1845 and 1848. Wiehler noted that Oerstedina was close to the genus Rufodorsia.[2] Molecular phylogenetic studies have shown a sister relationship between the two genera,[3][4] and in 2010, Ricardo Kriebel transferred the type species Oerstedina cerricola[2] to Rufodorsia.[5] However, the other two species of Oerstedina have not been formally transferred as of April 2021,[6][7] so the two genera are not fully synonymized.

Species

Three species were recognized in a 2020 list of New World members of the family Gesneriaceae:[8]

  • Oerstedina cerricola Wiehler, syn. Rufodorsia cerricola (Wiehler) Kriebel[9]
  • Oerstedina mexicana Wiehler
  • Oerstedina suffrutescens L.E.Skog

Distribution

Oerstedina is native to southwest Mexico (O. mexicana), Costa Rica and Panama.[2][9]

References
  1. "Oerstedina Wiehler", The International Plant Names Index, retrieved 2021-04-16
  2. Wiehler, Hans (1977), "New Genera and Species of Gesneriaceae from the Neotropics", Selbyana, 2 (1): 67–132, retrieved 2021-04-16
  3. Clark, John L.; Funke, Mindie M.; Duffy, Aaron M. & Smithy, James F. (2012), "Phylogeny of a Neotropical Clade in the Gesneriaceae: More Tales of Convergent Evolution", International Journal of Plant Sciences, 173 (8): 894–916, doi:10.1086/667229, S2CID 30060543
  4. Möller, Michael & Clark, John L. (2013), "The State of Molecular Studies in the Family Gesneriaceae: A Review", Selbyana, 31 (2): 95–105, retrieved 2021-04-16, p. 109
  5. "Rufodorsia cerricola (Wiehler) Kriebel", The International Plant Names Index, retrieved 2021-04-16
  6. "Oerstedina suffrutescens L.E.Skog", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-04-16
  7. "Oerstedina mexicana Wiehler", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-04-16
  8. Clark, J.L.; Skog, L.E.; Boggan, J.K. & Ginzbarg, S. (2020), "Index to names of New World members of the Gesneriaceae (subfamilies Sanangoideae and Gesnerioideae)", Rheedea, 30 (1): 190–256, doi:10.22244/rheedea.2020.30.01.14
  9. "Rufodorsia cerricola (Wiehler) Kriebel", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-04-16
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