Gwilym Peter Lewis (born 1952) is a British botanist, a curator at the Royal Botanic Gardens, Kew, and a leading expert on neotropical Leguminosae.
[2] His doctoral dissertation, supervised by Peter Edward Gibbs, is entitled Systematic studies in neotropical 'Caesalpinia L.' (Leguminosae: Caesalpinioideae), including a revision of the 'Poincianella-Erythrostemon group' .
[4] During his career at the Royal Botanic Gardens, Kew, his research has focused on "systematics, phylogenetics, biogeography, diversity and comparative biology of neotropical (mainly South American) Leguminosae, especially Caesalpinioideae (particularly Caesalpinia) and Mimosoideae.
Floristic studies focus on the drylands and wet tropics of Brazil and the Andes of Ecuador, including monographic work on the large genus Caesalpinia.
"[5] His numerous scientific articles (over 250 as author or co-author)[1] have been published in leading journals such as Brittonia, Curtis's Botanical Magazine and Kew Bulletin.