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Pollen morphology and taxonomic implications in Jacquemontia Choisy (Convolvulaceae)

2014; Taylor & Francis; Volume: 54; Issue: 1 Linguagem: Inglês

10.1080/00173134.2014.946961

1651-2049

Maria Teresa Buril, Paulino Pereira Oliveira, Ricardo Rodrigues, Francisco de Assis Ribeiro dos Santos, Marccus Alves,

Plant and animal studies

Jacquemontia is one of the larger genera in Convolvulaceae, with around 120 species, and is considered taxonomically difficult. The family is eurypalynous and pollen morphology has been considered as an important taxonomic character. Pollen morphology of 43 species, representing all morphological groups of Jacquemontia, was analysed with light microscopy and/or scanning electron microscopy. Three pollen types were characterised. These pollen types do not corroborate the current circumscription of sections in Jacquemontia, which is based on inflorescence structure. Conversely, however, some macro-morphological features are discussed that support groups defined on the basis of pollen analysis.