Abstract
A pollen morphology study of 10 Brazilian native species of Fridericia (Bignoniaceae) from forest fragments was performed using light microscopy and scanning electron microscopy, in search of new characters that might increase knowledge of pollen morphology of the species, and also to help the taxonomic characterization of the genus. The pollen grains were acetolysed, measured, photographed, and described qualitatively. The quantitative data were analyzed by descriptive statistics and multivariate statistics. Non-acetolysed pollen grains were observed under scanning electron microscopy for further details of exine and pollen surface. The pollen grains are isopolar, medium to large, with circular to subcircular amb, oblate-spheroidal to subprolate, tricolporate, with long colpi, constricted or not, sometimes with margo, rounded or truncated at the polar ends, endoaperture lalongate, and microreticulate to reticulate exine, sexine thicker than nexine. The results indicate a stenopalynous genus, however, in some cases, it is possible to identify the studied species by the pollen morphology. Morphological considerations are also discussed.
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The authors thank the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP–2012/09942-6) for the scholarship of the first author.
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Appendix: Specimens examined
Appendix: Specimens examined
Fridericia chica (Bonpl.) L.G.Lohmann: BRASIL. São Paulo: Magda, 15 Dec. 2007, N.T. Ranga et al. 03 (SJRP); BRASIL. São Paulo: Magda, 19 Nov. 2009, N.T. Ranga et al. 01 (SJRP); BRASIL. São Paulo: Matão, 24 Jan. 2009, N.T. Ranga et al. 02 (SJRP).
Fridericia craterophora (DC.) L.G.Lohmann: BRASIL. São Paulo: Barretos, 14 Feb. 2009, N.T. Ranga et al. 07 (SJRP); BRASIL. São Paulo: Palestina, 20 Oct. 2010, N.T. Ranga et al. 05 (SJRP); BRASIL. São Paulo: Onda Verde, 1 Feb. 2007, N.T. Ranga et al. 30 (SJRP).
Fridericia formosa (Bureau) L.G.Lohmann: BRASIL. Minas Gerais: Belo Horizonte, 6 Feb. 1919, A. Gehrt s/n (SP3173); BRASIL. Minas Gerais: Paraisópolis, 15 Apr. 1927, F.C. Hoehne s/n (SP20195).
Fridericia leucopogon (Cham.) L.G.Lohmann: BRASIL. São Paulo: Sales, 28 Mar. 2007, N.T. Ranga et al. 43 (SJRP); BRASIL. São Paulo: Sales, 28 Mar. 2007, N.T. Ranga et al. 44 (SJRP); BRASIL. São Paulo: Barretos, 5 Mar. 2009, N.T.Ranga et al. 08 (SJRP).
Fridericia mutabilis (Bureau & K. Schum.) L.G.Lohmann: BRASIL. Minas Gerais: Coronel Pacheco, Fazenda da Liberdade, 13 Oct. 1945, E.P. Heringer s/n (SP53198).
Fridericia platyphylla (Cham.) L.G. Lohmann: BRASIL. São Paulo: Nova Granada, Fazenda São João, 21 May 2010, M.C. Rodrigues 241 (SJRP).
Fridericia pubescens (L.) L.G. Lohmann: BRASIL. Minas Gerais: Fortaleza de Minas, mata do Paiol, 3 Apr. 2009, A. Robatino s/n (SJRP30343). BRASIL. São Paulo: Vinhedo, Condomínio Estância Marambaia, 27 Jan. 2002, J.R. Guillaumon s/n (SJRP28794).
Fridericia pulchella (Cham.) L.G. Lohmann: BRASIL. São Paulo: Mogi-Guaçu, Fazenda Campininha, 17 Sep. 1984, M. Kirizawa & W. Mantovani 1313 (SP); BRASIL. São Paulo: Sarapui, 30 Oct. 1977, O. Yano 17 (SP).
Fridericia samydoides (Cham.) L.G. Lohmann: BRASIL. São Paulo: Onda Verde, 31 Jul. 2008, N.T.Ranga et al. 16 (SJRP); BRASIL. São Paulo: Onda Verde, 31 Jul. 2008, N.T.Ranga et al. 17 (SJRP).
Fridericia triplinervia (Mart. ex DC.) L.G. Lohmann: BRASIL. São Paulo: Onda Verde, 01 Jan. 2007, N.T. Ranga et al. 48 (SJRP); BRASIL. São Paulo: Sales, 28 Mar. 2007, N.T. Ranga et al. 46 (SJRP); BRASIL. São Paulo:União Paulista, 12 Jul. 2010, N.T. Ranga et al. 02 (SJRP).
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de Souza, C.N., Gasparino, E.C. Pollen morphology of Fridericia Mart. (Bignoniaceae) from Brazilian forest fragments. Braz. J. Bot 37, 83–94 (2014). https://doi.org/10.1007/s40415-013-0042-1
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DOI: https://doi.org/10.1007/s40415-013-0042-1