Flora Polínica da Reserva do Parque Estadual das Fontes do Ipiranga (São Paulo, Brasil): Família: 61-Cucurbitaceae

Abstract

-(Pollen flora of "Reserva do Parque Estadual das Fontes do Ipiranga" (São Paulo, Brazil). Family: 61 -Cucurbitaceae). Pollen grains of seven genera and 11 taxa of Cucurbitaceae (Anisosperma passiflora (Vell.) A. Silva Manso, Cayaponia cabocla (Vell.) Mart., C. martiana (Cogn.) Cogn., C. pilosa (Vell.) Cogn., C. villosissima Cogn., Echinocystis racemosa (Steud.) Mart. Crov., Melothria campestre Naudin., M. cucumis Vell. var. cucumis, Sicydium gracile Cogn., Sicyos polyacanthos Cogn., and Wilbrandia verticillata (Vell.) Cogn, ocurring in the "Reserva do Parque Estadual das Fontes do Ipiranga", were studied. Descriptions and illustrations are presented for all studied species.

Contribution to Celastraceae palynology from Cerrado forest fragments: a focus on shape, amb and exine ornamentation

“…The pollen grains of the Celastraceae genera investigated here were previously reported in some studies that describe the pollen diversity in the family (Erdtman 1952; Roubik and Moreno 1991; Nagamitsu and Nagamasu 1994; Bogota and Sánchez 2001; Melhem et al 2003; Cruz-Barros et al 2005; Perveen and Qaiser 2008; Bauermann et al 2009; Cassino and Meyer 2011; Radaeski et al 2014; Cassino et al 2016). However, for Monteverdia dasyclada , M. schummaniana , M. urbaniana and Pristimera celastroides this is the first record of studies of their pollen morphology.…”

“…Cruz-Barros et al (2005) described the pollen grains of Monteverdia gonoclada (formerly called M. robusta Reissek) as monad and prolate-spheroidal, with a subtriangular amb, tricolporate endoapertures, colpi with margo, lalongate endoapertures with margo, reticulate and heterobrochate sexine, and sexine thicker than nexine. This agrees with the present description of the species, with the exception of the shape, endoaperture and margo.…”

“…The pollen grains of Monteverdia evonymoides , previously belonging to the genus Maytenus Molina, were described by Cruz-Barros et al (2005) as monad and oblate-spheroidal, with subcircular amb, tricolporate endoapertures, long and narrow ectoaperture without margo, lalongate endoapertures, reticulate and heterobrochate exine, and sexine thicker than nexine. The pollen grains of this species analyzed here are prolate-spheroidal with circular endoapertures and reticulate and homobrochate exine – data that differ from that of Cruz-Barros et al (2005). This fact may be due to the taxonomic conflicts within the genus, as recently its species have been subject to a new classification, including the synonymization of some species (Biral et al 2017).…”

“…These authors reported constant pollen morphology in terms of size, number of apertures and type of endoaperture; and showed differences in the descriptions of Celastraceae's pollen grains, especially regarding the shape and ornamentation of the exine, indicating that these characters are of taxonomic interest for the group. Furthermore, the potential utility of Celastraceae pollen morphology in contributing to taxonomic studies was also addressed in other work (Gonçalves-Esteves and Melhem 1998, 2002, 2004; Cruz-Barros et al 2005).…”

Flora polínica da Reserva do Parque Estadual das Fontes do Ipiranga (São Paulo, Brasil): família: 135-Asclepiadaceae

“…O formato atual da Flora Polínica do PEFI segue Cruz-Barros & Souza (2005). O estudo morfológico dos polinários é importante como material de referência para a palinologia aplicada servindo como base de dados para pesquisas sobre polinização zoófi la.…”