Evolutionary trends in Winteraceae pollen

Ham, Raymond van der; Heuven, Bertie Joan van

doi:10.1080/00173130260045431

Cited by 16 publications

(10 citation statements)

References 18 publications

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“…Unfortunately, very little is known about the pollination biology within the Monodora clade; more data is needed in order to adequately tackle these questions. A similar case of evolution from tetrads to monads, also unexplained, occurred in the Winteraceae, in the genus Zygogynum s. s. (Van der Ham & Van Heuven, 2002).…”

Section: Intergeneric Variationmentioning

confidence: 97%

Pollen morphology within theMonodoraclade, a diverse group of five African Annonaceae genera

Couvreur¹,

Botermans²,

Heuven

et al. 2008

Grana

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Section: Intergeneric Variationmentioning

confidence: 97%

Pollen morphology within theMonodoraclade, a diverse group of five African Annonaceae genera

Couvreur¹,

Botermans²,

Heuven

et al. 2008

Grana

Self Cite

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“…To be able to unravel the origin, divergence and spatial history of generic lineages of Winteraceae, it is important to compare and affiliate fossil Winteraceae pollen/tetrads to those of the extant genera (generic lineages). The general morphology and ultrastructure of Winteraceae are well known and have been studied by Bailey & Nast (1943), Straka (1963), Fiser & Walker (1967), Sampson (1974Sampson ( , 2000aSampson ( ,b, 2007, Lobreau-Callen (1977), Praglowski (1979), and van der Ham & van Heuven (2002). Unfortunately, only a few of these studies provide good close-ups (SEM micrographs;Sampson 2000b, van der Ham & van Heuven 2002 showing the sculpture and aperture region (including ulcus membrane) at high enough resolution.…”

Section: Introductionmentioning

confidence: 99%

“…The general morphology and ultrastructure of Winteraceae are well known and have been studied by Bailey & Nast (1943), Straka (1963), Fiser & Walker (1967), Sampson (1974Sampson ( , 2000aSampson ( ,b, 2007, Lobreau-Callen (1977), Praglowski (1979), and van der Ham & van Heuven (2002). Unfortunately, only a few of these studies provide good close-ups (SEM micrographs;Sampson 2000b, van der Ham & van Heuven 2002 showing the sculpture and aperture region (including ulcus membrane) at high enough resolution. Until now, most fossil Winteraceae pollen/tetrads have only been illustrated and described using LM (exception: SEM micrographs in Coetzee & Praglowski 1988).…”

Section: Introductionmentioning

confidence: 99%

Pollen morphology of extant Winteraceae: a study allowing SEM-based affiliation of its fossil representatives

Grímsson¹,

Xafis²,

Neumann³

et al. 2017

Acta Palaeobotanica

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ABSTRACT. When applying high-resolution microscopy, the pollen morphology of extant taxa can be used to classify fossil pollen, that is, to address the latter in the established systematic-phylogenetic framework. Here we investigate tetrads and pollen features of 20 different Winteraceae species, most of them belonging to the early-diverging generic lineages Tasmannia, Drimys and Pseudowintera. The tetrads and pollen are grouped into eleven pollen types based on diagnostic features observed by both light and scanning electron microscopy. The high-resolution scanning electron micrographs of recent material allow detailed comparison with fossil material, resulting in a more accurate affiliation of fossil tetrads/pollen to extant lineages. As a case study, early Miocene Winteraceae tetrads from South Africa are re-examined and formally described. The systematic placement of the African fossils is discussed in light of the pollen types presented here.

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“…El polen maduro en Winteraceae puede estar conformando por mónadas o tétradas (van der Ham & van Heuven, 2002;Sampson, 2007), puede presentar o no papilas y/o annulus, su exina puede ser reticulada o microreticulada y su mitosis puede ser sincrónica o asincrónica en cada uno de los granos de polen que conforman la tétrada (Bailey & Nast, 1943;Fiser & Walker, 1967;Praglowski, 1979;Sampson, 1974;Sampson, 1981;Sampson, 2000a;Sampson, 2000b;van der Ham & van Heuven, 2002).…”

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Anatomía y desarrollo de estambres y carpelos en Drimys granadensis (Winteraceae)

Marquínez

2014

RBT

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Recibido 12-viii-2013.Corregido 24-i-2014. Aceptado 26-ii-2014. Abstract: Anatomy and development of stamens and carpels of Drimys granadensis (Winteraceae).Winteraceae has long been considered a family with early diversification among angiosperms, with characters such as: flowers with many spirally arranged parts and apocarpic ovary formed by plicated carpels with sessile stigma. in Drimys, the presence or absence of conspicuous glands on the connective of the stamens have been used as a taxonomic character, and it is considered a synapomorphy for the clade including Drimys angustifolia, D. brasiliensis, D. granadensis and D. roraimensis (Northeastern clade); however, the anatomy of stamens and carpels has only been studied in detail for D. winteri (Southwestern clade). in this research, the presence and the structure of glands on the connective of stamens was studied in seven species of the genus from herbarium specimens, and a detailed study of the anatomy and development of stamens and carpels was carried out by scanning electron and optic microscopy in Drimys granadensis.

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Evolutionary trends in Winteraceae pollen

Cited by 16 publications

References 18 publications

Pollen morphology within theMonodoraclade, a diverse group of five African Annonaceae genera

Pollen morphology within theMonodoraclade, a diverse group of five African Annonaceae genera

Pollen morphology of extant Winteraceae: a study allowing SEM-based affiliation of its fossil representatives

Anatomía y desarrollo de estambres y carpelos en Drimys granadensis (Winteraceae)

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