Morfologia dos tricomas das p谷talas de esp谷cies de Pseudobombax Dugand (Malvaceae, Bombacoideae) e seu significado taxonˋmico

作者：Carvalho Sobrinho; Jefferson Guedes de; Santos; Francisco de Assis Ribeiro dos; Queiroz; Luciano Paganucci de

来源：Acta Botanica Brasilica, 2009, 23(4): 929-934.

DOI：10.1590/S0102-33062009000400003

• morphology
• trichomes
• pseudobombax
• malvaceae.

trichome morphology of the petals of pseudobombax dugand species was investigated. the eight species selected of pseudobombax were analyzed using optical microscopy and scanning electron microscopy. the study detected the existence of variation, both qualitative and quantitative, in morphology of trichomes in petals of species analyzed. in pseudobombax petals, two kinds of trichomes were found: (a) trichomes 2-4-armed, sessile, long, flexible and with thin walls, situated on the adaxial surface; (b) tufted trichomes, sessile, short, rigid, with thick, lignified walls, on the abaxial surface of the petals. the qualitative and quantitative data were of taxonomic value for the resolution of problems of specific identification in the genus.