Pollen morphology and its systematic value to South American species of Lepidaploa (Vernonieae: Asteraceae)

MARQUES DANILO; VIA DO PICO GISELA, M.; NAKAJIMA JIMI N.; DEMATTEIS MASSIMILIANO

RODRIGUESIA

Instituto de Pesquisas Jardim Botânico do Rio de Janeiro

Lugar: Rio de Janeiro; Año: 2021

0370-6583

Palynological data have been used in Vernonieae for generic and specific delimitations, particularly in the Lepidaploinae subtribe. For this reason, pollen studies in the genus Lepidaploa are important to solve taxonomic conflicts. We characterized 23 species of Lepidaploa searching for morphological differences among themselves. We then compared the data obtained with other genera of the Lepidaploinae. The results show that the species have pollen type ?C? (with polar lacuna) or ?G? (without polar lacuna), oblate-spheroidal, subprolate or prolate-spheroidal, 3-colporate and equinolophate. The pollen types and shape of pollen grain are taxonomically useful. Pollen morphology is useful to distinguish species and genera of Lepidaploinae. Together with macromorphological data it is possible to delimit Lepidaploa and the species studied here.