FIGURE 3 - uploaded by Yoannis Domínguez
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Photomicrographs of pollen grains of Utricularia L. Utricularia pusilla (A, polar view; B, equatorial view); U. resupinata (C, polar view; D, equatorial view; E, ornamentation); U. simulans (F, polar view; G, equatorial view); U. subulata (H, polar view; I, equatorial view). Bars = 10 µm.
Source publication
We present here pollen morphology of 12 native taxa of Lentibulariaceae from Western Cuba with the aim of surveying pollen traits useful for species identification. Pollen grains were studied using light microscopy and scanning electron microscopy to search for new characteristics to contribute to the taxonomy of Lentibulariaceae from western Cuba...
Citations
... Micromorphological studies with pollen grains of Lentibulariaceae have already been highlighted as important in species delimitation (Erdtman 1952;Huynh 1968;Fromm-Trinta 1979, 1981Lobreau-Callen et al. 1999;Rodondi et al. 2010;Beretta et al. 2014;Cruz et al. 2018). Palynological features, especially those related to shape, aperture, and endoaperture were recently used by Cruz et al. (2018) in the characterization of Lentibulariaceae species from Western Cuba; for the seven species of Utricularia sampled, the authors categorize three pollen types. ...
... Micromorphological studies with pollen grains of Lentibulariaceae have already been highlighted as important in species delimitation (Erdtman 1952;Huynh 1968;Fromm-Trinta 1979, 1981Lobreau-Callen et al. 1999;Rodondi et al. 2010;Beretta et al. 2014;Cruz et al. 2018). Palynological features, especially those related to shape, aperture, and endoaperture were recently used by Cruz et al. (2018) in the characterization of Lentibulariaceae species from Western Cuba; for the seven species of Utricularia sampled, the authors categorize three pollen types. In the present study, palynological characters provide additional diagnostic evidence for the new species as presented in Table 1. ...
The rediscovery of a carnivorous plant, Utricularia cutleri, in a seasonally flooded coastal plain in the Atlantic Forest domain, is here reported. This species was first described in 1952 with a few collections from that time, and since 1989 was considered a synonym of U. viscosa. Combined macro- and micromorphological evidence using SEM analysis is provided to propose its taxonomic reestablishment. Utricularia cutleri was originally known only from the type collection in Ceara ́ state, and here we report two new records from Mato Grosso and Rio Grande do Norte states, in central-western and northeastern Brazil. Updated morphological description, geographic distribution, and conservation status are provided, as well as comparative discussion with U. viscosa. Moreover, an updated identification key to species of Lentibulariaceae from Rio Grande do Norte is also presented.
RESUMO Este estudo apresenta a análise polínica de uma turfeira localizada no Parque Nacional das Sempre-Vivas (PNSV), na Serra do Espinhaço Meridional, município de Diamantina, Estado de Minas Gerais, Brasil, para fornecer material de referência para a identificação de grãos de pólen preservados em solo de Cerrado durante o Pleistoceno e Holoceno. A análise abrangeu 16 níveis estratigráficos de um testemunho de sondagem de 162 cm de comprimento, correspondentes aos últimos 32.800 anos cal AP. A preparação química consistiu de lavagem ácida com HCl, HF, acetólise e tamisação por banho de ultrassom, com montagem do resíduo polínico em lâminas de microscopia com gelatina glicerinada. A análise foi realizada com base em observações morfológicas sob microscopia óptica e ilustrações dos grãos de pólen com base em literatura especializada. Foram identificados 116 tipos polínicos relacionados às fitofisionomias florestais ocorrentes no PNSV representadas pelas florestas semidecídua e montana, e pelas fitofisionomias do Cerrado (latu senso), áreas florestadas e formações campestres. As características morfológicas dos grãos de pólen foram bastante variáveis e podem ser utilizadas como indicadores nas reconstruções paleoambientais da sucessão da vegetação e condições paleoclimáticas do bioma Savana Tropical (Cerrado).
