Pollen grain morphology of Fabaceae in the Special Protection Area (SPA) Pau-de-Fruta, Diamantina, Minas Gerais, Brazil

Anais da Academia Brasileira de Ciências

Cynthia F.p. Da Luz¹  Erica S. Maki¹  Ingrid HorÁk-terra¹  Pablo Vidal-torrado¹  Carlos Victor Mendonça Filho¹ 

关键词: Espinhaço Southern Mountain Range;    Fabaceae;    palynology;    pollen morphology;    Serra do Espinhaço Meridional;    Fabaceae;    palinologia;    morfologia polínica;   

DOI  :  10.1590/0001-3765201380511

来源: SciELO

【 摘 要 】

The presented paper considered the pollen morphology of thirteen species belonging to seven genera of the Fabaceae family occurring in the Pau-de-Fruta Special Protection Area (SPA), Diamantina, state of Minas Gerais, Brazil. The pollen grains of six species ofChamaecrista [C. cathartica (Mart.) H.S. Irwin & Barneby, C. debilis Vogel, C. flexuosa (L.) Greene, C. hedysaroides (Vogel) H.S. Irwin & Barneby, C. glandulosa (L.) Greene, and C. papillata H.S. Irwin & Barneby] have a similar morphology, characterized by three long colporated apertures with a central constriction. The species share specific morphological features regarding pollen size, endoaperture type (circular, lalongate or lolongate) and SEM ornamentation patterns of the exine (rugulate with perforations or perforate). Andira fraxinifoliaBenth., Dalbergia miscolobium Benth, Galactia martii DC,Periandra mediterranea (Vell.) Taub., Senna rugosa(G.Don) H.S. Irwin & Barneby and Zornia diphylla (L.) Pers showed different pollen types in small to large size; oblate spheroidal to prolate form; colpus or colporus apertures; circular, lalongate or lolongate endoapertures and distinctive SEM ornamentation patterns of the exine (perforate, microreticulate, reticulate or rugulate with perforations). Only Stryphnodendron adstringens (Mart.) Coville presents polyads. The pollen morphology variation of these species allowed the Fabaceae family to be characterized as eurypalynous in the SPA Pau-de-Fruta.

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