Passiflora L., the largest genus of Neotropical lianas, belongs to family Passifloraceae and encompasses 615 accepted species as concluded in present research. Historically, various taxonomic classifications have been proposed for genus. One such proposal divided into 23 subgenera. Subsequent revisions reduced this number four later expanded it six currently recognized Recent phylogenetic analyses using molecular markers confirmed monophyly these However, no study has used pollen...

This study investigates and reports the pollen morphology of a selected group Passiflora species subgenus Astrophea. We found that can be grouped into five types, four which had been previously documented. The fifth new type was observed in P. macrophylla. completely lacks muri, possesses spines bacula on granulate surface. All Astrophea studied have same aperture: 6-colporate with 3 lalongate endoapertures, one for each pair ectoapertures. Multivariate analyses performed quantitative...

Pollen grains from twelve species of the Passifloraceae family Brazilian Atlantic Forest were analyzed: Passiflora subg. Astrophea (1sp.), P.subg. Decaloba (1sp.) and (10spp.). The current study aims to acquire additional information feature pollen morphology herein studied help setting a more precise taxa delimitation. Acetolyzed measured, described illustrated using light scanning electron microscopy. medium or large sized, oblate spheroidal, suboblate, prolate spheroidal subprolate;...

We analyzed the pollen grains of 30 taxa genus Bauhinia L., within five series: Aculeatae (9 species); Acuminatae (1 Cansenia (17 Pentandrae (2 and Perlebia species). The were acetolysed, after which they photographed under light microscopy. Non-acetolysed scanning electronic Characters such as shape, size, exine aperture constitution studied. species separated by a dichotomous key, showed that classified very large; isopolar or apolar; oblate, suboblate, oblate spheroidal spherical; large...

This work aimed to morphologically characterize 22 species of Spermacoceae s.s found in the Atlantic Forest state Rio de Janeiro with purpose improving palynological knowledge studied species.The included six Borreria and Denscantia cymosa, Emmeorhiza umbellata, Hexasepalum apiculatum, H. radula, teres, Manettia fimbriata, Mitracarpus eichleri, M. frigidus, hirtus, lhotzkyanus, megapotamicus, Oldenlandia salzmannii, Pentodon pentandrus, Richardia brasiliensis, scabra Spermacoce...

We analyzed the pollen grains of 11 species within subfamily Bombacoideae. The were acetolyzed, after which they and photographed under light microscopy. Unacetolyzed photomicrographed scanning electron studied characters such as shape, size, exine ornamentation aperture type. separated by a key, considers presence or absence "calotte" in grains. This attribute Ceiba Eriotheca from other genera. Some are differentiated specific characters: Bombacopsis glabra B. stenopetala, sexine is...

Abstract Larvae and adults of certain species predator lady beetles feed on pollen, guaranteeing their survival, at times, reproduction in the absence preferred prey. Palynology, therefore, may contribute investigation botanical families visited by these predators order to obtain this floral resource. There are records visitation Apiaceae flowers Coleomegilla maculata DeGeer, 1775 (Coleoptera, Coccinellidae), but not ingestion pollen grains beetle. The external morphology three aromatic...

The palynological diversity of Blechnaceae in the Atlantic Forest was investigated. While monophyletic family belongs to group leptosporangiate ferns, a new classification proposed by recent phylogenetic study reorganizes and adds genera. To expand knowledge group, spore morphology 23 species hybrid, distributed among 10 genera, described. Material from herbarium collections were submitted acetolysis mounted on slides, with subsequent statistical analysis measurements. Photomicrographs...

Passiflora subgenus Astrophea is one of the five recognised subgenera Passiflora. Brazil presents ca. 26 species this with majority distributed in Amazon Basin. During ongoing taxonomic revision Brazilian subg. Astrophea, seven previously unknown for country were recorded: amoena, P. fuchsiiflora, jussieui, ovata, plumosa, quelchii, and tessmannii. The new records expand distribution ranges, especially which was exclusively known from its type locality only southeastern Guyana. authors...

The pollen morphology of Mourera (Podostemaceae) was analysed with the aim providing detailed descriptions for all species genus. Pollen grains were obtained from anthers flower buds, acetolysed, and examined using light scanning electron microscopy. are monads, small or medium sized, prolate in shape, a circular subcircular amb. tricolpate, colpus variously ornate has distinctive ornamentation between apertural non-apertural regions. exine is thin microechinate supratectal spines species....

In order to evaluate the significance of pollen morphology for generic and infrageneric taxonomy genus Eremanthus (Vernonieae, Asteraceae), provide additional data its phylogenetic reconstruction, 20 23 species was examined using light scanning electron microscopy. Acetolysed grains were measured, described, illustrated microscopy, while non-acetolysed analyzed Pollen these are isopolar, oblate-spheroidal in most species, more rarely prolate spheroidal or suboblate, subtriangular amb,...

Here, we describe pollen grains extracted from a Pleistocene-Holocene sediment core (BU-91-GL-05; 22°48'45"S; 41°54'13"W) taken the Albacora Slope (22°48'45"S; 41°54'13"W), located in Campos Basin of northern region state Rio de Janeiro, Brazil. The analysis resulted identification and morphological description 46 types pollen: one gymnosperm genus (Podocarpus); 45 angiosperm taxa across 27 families-one family monocotyledons (Poaceae) 26 families (30 types) dicotyledons. most common were...

There are nine species of the plant genus Verbesina in Brazil, which distributed Northeast, Center-West, Southeast and South regions country. The objective present study was to describe pollinic morphology eight these better characterize them evaluate potential species-level taxonomic characters. Acetolysed pollen material measured within seven days under light microscopy, while non-acetolyzsed grains were used for scanning electronic microscopy. found be oblate-spheroidal, medium-sized,...

The center of diversity for Passiflora subg. Astrophea is in low altitude areas northern South America. majority species this group are difficult to find nature. Seed morphology was described detail 25 subgenus Astrophea, a that until now did not exist. For morphological analysis, 20 seeds per were measured length, width and thickness, the arithmetic means calculated. varied thickness. Eight types ornamentation found. margins among crestate, dentate, parted, entire parted-crestate. seed apex...