L.Y.Th. Westra

Revision of the Neotropical genera <i>Bocageopsis, Onychopetalum,</i> and <i>Unonopsis</i> (Annonaceae)

Paul J. M. Maas, L.Y.Th. Westra, Marloes Vermeer · Blumea - Biodiversity Evolution and Biogeography of Plants · 2007 · 44 citations

Biology, Biodiversity, Phylogenetics +14

Confronting a morphological nightmare: revision of the Neotropical genus <i>Guatteria</i> (<i>Annonaceae</i>)

Paul J. M. Maas, L.Y.Th. Westra, Susana Arias Guerrero et al. · Blumea - Biodiversity Evolution and Biogeography of Plants · 2015 · 39 citations · Full text

Biology, Biodiversity, Phylogenetics +15

An updated index to genera, species, and infraspecific taxa of Neotropical Annonaceae

Paul J. M. Maas, L.Y.Th. Westra, Heimo Rainer et al. · Nordic Journal of Botany · 2011 · 37 citations · Full text

Biodiversity, Updated Index, Phylogenetics +13

STUDIES IN ANNONACEAE. XIII. THE ROLE OF MORPHOLOGICAL CHARACTERS IN SUBSEQUENT CLASSIFICATIONS OF ANNONACEAE: A COMPARATIVE SURVEY

J. Koek‐Noorman, L.Y.Th. Westra, Paul J. M. Maas · Taxon · 1990 · 22 citations

Biology, Various Key Characters, Phylogenetics +15

Macrophotographic wood atlas of Annonaceae

J. Koek‐Noorman, L.Y.Th. Westra · Botanical Journal of the Linnean Society · 2012 · 21 citations · Full text