Twelve new and exciting Annonaceae from the Neotropics

Abstract

As a result of concerted efforts of the community of Annonaceae taxonomists, increasingly detailed knowledge of the diversity of the Neotropical genera has been documented. With the exception of just two large genera, Annona and Xylopia, all Neotropical Annonaceae have been revised within the last 25 years. Subsequent to these publications, many new specimens have been collected and sent to us in Leiden for identification. These included a number that, despite the advanced state of taxonomic knowledge, proved to represent rarely collected, undescribed species. Here we describe 12 new species of Annona, Guatteria, Klarobelia, Tetrameranthus, and Xylopia. These species serve to illustrate the still underestimated diversity of the Neotropical flora, even in well studied plant groups like Annonaceae.

Taxonomic revision of the African genus Greenwayodendron (Annonaceae)

“…The connective shield, i.e. the apical extension of the connective between both thecae, is generally tongue shaped and also termed umbonate (Maas et al 2003) but is flattened and discoid or lobulated in G.oliveri . Connective shape has also been shown to be an important taxonomic character in other genera such as Duguetia A.St.-Hil.…”

“…Connective shape has also been shown to be an important taxonomic character in other genera such as Duguetia A.St.-Hil. (Maas et al 2003) or Uvariastrum Engl. & Diels (Couvreur 2014).…”

“…In continental Africa (excluding Madagascar), 42 genera and around 400 species have been recorded to date (Couvreur et al 2011; Couvreur et al 2012; Ghogue et al 2017). During the last decade, several revisions and monographs have significantly improved our understanding of African Annonaceae such as Hexalobus (Botermans et al 2011), Monodora and Isolona (Couvreur 2009), Uvariastrum (Couvreur 2014), Neostenanthera (Fero et al 2014), Brieya and Piptostigma (Ghogue et al 2017), Annickia (Versteegh and Sosef 2007) and Duguetia (Maas et al 2003).…”

A taxonomic revision of the Neotropical genus Cremastosperma (Annonaceae), including five new species

“…of 8; Johnson and Murray 1995); and in more species rich and widespread genera such as Duguetia A.St.-Hil. (42 of 93; Maas et al 2003) and Guatteria (92 of 177; Maas et al 2015). …”

Additions to the flora of Panama, with comments on plant collections and information gaps

“…In addition, the Autonomous University of Chiriquí herbarium (UCH) and the Jardín Botánico Lankester of Costa Rica collected and thoroughly studied the orchid flora of Panama (Bogarín et al 2013a(Bogarín et al , 2013b(Bogarín et al , 2014a(Bogarín et al , 2014b(Bogarín et al , 2017Serracín et al 2013Serracín et al , 2016. For its part, the ICGB project has carried out fieldwork all over Panama and has found several new species and new records published and unpublished (in process) for the country (Cáceres-González and Ibáñez 2014; Daniel and Carrión 2015; Kennedy and Flores 2015;Flores et al 2016Flores et al , 2017Flores et al , 2018Maas et al 2019).…”