Abstract
Cyrtocarpa is a generic name that has been applied to members of a complex of dry-habitat Neotropical taxa, but recent investigations have revealed that in fact this group represents three distinct genera. Tumultivenia and Uniostium, two new genera of Anacardiaceae-Spondioideae, are described and illustrated, as is one new species, Cyrtocarpa caribaea. Both new genera are strongly supported as distinct in a published phylogeny. Uniostium velutinifolium was originally published in Bursera and subsequently combined in both Tapirira and Cyrtocarpa, while Tumultivenia caatingae was originally published in Cyrtocarpa. The number of locules and number and position of opercula in the pyrene provide the salient characters distinguishing these genera. The new species is a distinctive member of Cyrtocarpa sensu stricto but requires more collections (including flowering material) as well as material for molecular studies.
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Acknowledgments
We thank Bobbi Angell for her handsome and revealing illustrations and the Missouri Botanical Garden Press for permission to reproduce her illustrations of Cyrtocarpa caatingae and C. velutinifolia; Elizabeth Joyce for sharing data from her doctoral thesis (Joyce, 2021); the PAFTOL Explorer and the Kew Tree of Life Explorer (Baker et al., 2022) for further information on the phylogeny; Benedito Pereira for sharing his observations and field images of Cyrtocarpa caatingae; the Naturalis herbarium (U) for making digitized images of the Cyrtocarpa complex collections available; Silvana Monteiro for help preparing and georeferencing the exsiccatae; and Ana Maria Ruiz for assembling images and field data of specimens.
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Mitchell, J.D., Daly, D.C., Calvillo-Canadell, L. et al. Two new genera and a new species of Anacardiaceae from northern South America. Brittonia 75, 440–457 (2023). https://doi.org/10.1007/s12228-023-09760-0
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DOI: https://doi.org/10.1007/s12228-023-09760-0