Weinmannia Explained

Weinmannia is a genus of trees and shrubs in the family Cunoniaceae. It contains 90 species, which range from Mexico through Central and South America including the Caribbean, and to the Mascarene Islands (Mauritius and Réunion) in the western Indian Ocean.^[1] It is absent from mainland Africa and Australia, but some fossils have been attributed to Weinmannia in Australia.

Leaves are simple or pinnate, with a margin usually toothed, and interpetiolar stipules. Flowers are bisexual, white, arranged in racemes. The fruit is a capsule opening vertically from the top to the base. Seeds hairy without wings.

Species

90 species are currently accepted:^[1]

• Weinmannia abstrusa – Honduras
• Weinmannia anisophylla – Colombia, Costa Rica, Guatemala, Honduras
• Weinmannia apurimacensis – southeastern Peru
• Weinmannia auriculata – Colombia, Ecuador, Peru, northwestern Venezuela
  • • • • var. bogotensis var. dryadifolia Weinmannia auriformis – Ecuador
• Weinmannia baccariniana – Venezuela and Peru
• Weinmannia balbisiana – southeastern Mexico to Bolivia
  • • var. calothyrsa Weinmannia bangii – Peru and Bolivia
• Weinmannia boliviensis – Bolivia
• Weinmannia brachystachya – Peru and southern Venezuela
• Weinmannia bradfordiana – Ecuador
• Weinmannia burserifolia – Nicaragua, Costa Rica, Panama
• Weinmannia chryseis – Colombia and Peru
• Weinmannia cinerea – Peru
• Weinmannia cochensis – Colombia and Ecuador
• Weinmannia cogolloi – Colombia
• Weinmannia condorensis – Ecuador
• Weinmannia corocoroensis – Venezuela
• Weinmannia costulata – southern Ecuador
• Weinmannia crassifolia – Peru and Bolivia
• Weinmannia cundinamarcensis – Colombia, Peru, and western Bolivia
• Weinmannia cymbifolia – Peru
• Weinmannia davidsonii – Bolivia
• Weinmannia descendens – northern Peru
• Weinmannia discolor – southeastern and southern Brazil
• Weinmannia dzieduszyckii – Peru
• Weinmannia elliptica – Peru, Ecuador, Colombia, and Venezuela
  • • var. trichocarpa Weinmannia fagaroides – Costa Rica to Bolivia
    • var. trollii Weinmannia geometrica – Bolivia
• Weinmannia glabra – Mexico to Nicaragua; Ecuador and Peru
• Weinmannia glomerata – Peru
• Weinmannia guyanensis – Guyana and southeastern Venezuela
• Weinmannia haenkeana – Ecuador, Peru, and Bolivia
• Weinmannia heterophylla – Venezuela, Colombia, Ecuador, Peru, and Bolivia
• Weinmannia horrida – Costa Rica and Panama
• Weinmannia humilis – southeastern and southern Brazil
• Weinmannia ibaguensis – Colombia
• Weinmannia ilutepuiensis – Venezuela
• Weinmannia intermedia – southern Mexico and Honduras
• Weinmannia jahnii – northwestern Venezuela
• Weinmannia jelskii – Ecuador and Peru
• Weinmannia karsteniana – Costa Rica, Panama, Colombia, and northwestern Venezuela
• Weinmannia kunthiana – Peru, Ecuador, Colombia, and northwestern Venezuela
• Weinmannia lansbergiana – Peru, northeastern Colombia, and Venezuela
• Weinmannia latifolia – Colombia, Ecuador, and Peru
• Weinmannia laurina – Venezuela, Colombia, Panama, and Peru
• Weinmannia laxiramea – Guyana and southeastern Venezuela
• Weinmannia lechleriana – Bolivia, Peru, Colombia, and Venezuela
• Weinmannia lentiscifolia – Bolivia, Peru, Ecuador, Colombia, and Venezuela
• Weinmannia lopezana – Colombia
• Weinmannia loxensis – Ecuador
• Weinmannia lyrata – Bolivia
• Weinmannia machupicchuensis – Peru
• Weinmannia macrophylla – central Colombia and Ecuador
• Weinmannia magnifolia – Colombia and Ecuador
• Weinmannia mariquitae – Colombia and Ecuador
• Weinmannia mauritiana – Mauritius and Réunion
• Weinmannia microphylla – Venezuela, Peru, and Colombia
  • • var. tenuior Weinmannia multijuga – Bolivia, Peru, Ecuador, Colombia, and Venezuela
• Weinmannia organensis – Peru and southeastern and southern Brazil
• Weinmannia ovata – Bolivia, Peru, Ecuador, Colombia, and Venezuela
• Weinmannia oxapampana – Peru
• Weinmannia parvifoliolata – Colombia
• Weinmannia paulliniifolia – southeastern and southern Brazil
• Weinmannia pentaphylla – Peru
• Weinmannia pinnata – Caribbean, Central America, Andes, and Brazil
• Weinmannia piurensis – Peru
• Weinmannia polyphylla – Costa Rica, Colombia, Ecuador, Peru, and Bolivia
• Weinmannia portlandiana – Jamaica
• Weinmannia pubescens – Peru, Ecuador, Colombia, and Venezuela
  • • • • var. arcabucoana var. popayanensis Weinmannia reticulata – Bolivia, Peru, Ecuador, and Colombia
• Weinmannia rhoifolia – Bolivia
• Weinmannia rollottii – Andes of Colombia and Ecuador
  • • var. subvelutina Weinmannia sorbifolia – Peru, Ecuador, Colombia, and Venezuela
      • • var. caliana var. sclerophylla Weinmannia spruceana – Bolivia, Peru, Ecuador, Colombia, and Venezuela
• Weinmannia stenocarpa – Ecuador
• Weinmannia subsessiliflora – Colombia, Peru, and west-central Brazil
  • • var. caquetana Weinmannia ternata – Peru
• Weinmannia testudineata – northeastern Colombia and northwestern Venezuela
• Weinmannia tinctoria – Mascarene Islands
• Weinmannia tolimensis – Colombia
• Weinmannia tomentosa – Colombia and northwestern Venezuela
• Weinmannia trianae – Costa Rica, Colombia, Ecuador, Peru, and Bolivia
• Weinmannia trichosperma – Argentina and Chile
• Weinmannia ulei – Northern Peru
• Weinmannia vegasana – Colombia
• Weinmannia velutina – Peru, Venezuela, Guyana, and northern Brazil
• Weinmannia vulcanicola – Costa Rica
• Weinmannia wercklei – Costa Rica and Panama
• Weinmannia yungasensis – Bolivia

Taxonomy

Until recently the genus included five sections:

• Fasciculata (mostly Malesia, from Sumatra to Fiji)
• Inspersa (Madagascar)
• Leiospermum (mostly Pacific, from Bismarck archipelago to the Marquesas)
• Spicata (Madagascar and Comores)
• Weinmannia (Central and South America, Mascarenes)

A phylogenomic study by Pillon et al. (2021) concluded that Weinmannia was paraphyletic, and formed two distinct clades. The species belonging to the four Old World sections – Fasciculatae, Inspersae, Spicatae, and Leiospermum – formed a monophyletic group, which is sister to the Old World (mostly New Caledonian) genera Cunonia and Pancheria. Section Weinmannia, which includes species from the Americas and the Mascarene Islands, is sister to the Old World assemblage. They proposed placing the four Old World sections into the revived genus Pterophylla, with genus Weinmannia limited to the American and Mascarene species in section Weinmannia.^[2]

External links

• Encyclopedia: Weinmannia. Encyclopedia of Chilean Flora . 4 February 2014 . https://web.archive.org/web/20101215134557/http://florachilena.cl/Niv_tax/Angiospermas/Ordenes/Oxidales/Cunoniaceae/Weinmannia/Weinmannia.htm. 15 December 2010. es.

Notes and References

1. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:328438-2 Weinmannia L.
2. Pillon, Y., H. C. F. Hopkins, O. Maurin, N. Epitawalage, J. Bradford, Z. S. Rogers, W. J. Baker, and F. Forest. 2021. Phylogenomics and biogeography of Cunoniaceae (Oxalidales) with complete generic sampling and taxonomic realignments. American Journal of Botany 108(7): 1181–1200.