Ultrastructure and diversity of recent and fossil zona-aperturate pollen grains

Hesse, Michael; Zetter, Reinhard

doi:10.1007/s00606-005-0358-9

Cited by 30 publications

(15 citation statements)

References 50 publications

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“…Select pollen characters have previously been described by Erdtman (1943, 1952), Khanna (1964), and Meyer‐Melikian and Diamandopulu (1996), with the latter illustrating the pollen wall, but these studies were accompanied by only line drawings that display characters at low resolution. Walker (1976b) and Hesse and Zetter (2005) described surface features of Euryale pollen with accompanying scanning electron micrographs.…”

Section: Resultsmentioning

confidence: 99%

Pollen structure and development in Nymphaeales: Insights into character evolution in an ancient angiosperm lineage

Taylor

Cooper

Schneider

et al. 2015

American J of Botany

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Section: Resultsmentioning

confidence: 99%

Pollen structure and development in Nymphaeales: Insights into character evolution in an ancient angiosperm lineage

Taylor

Cooper

Schneider

et al. 2015

American J of Botany

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“…Waha (1984) reports that the ring-like aperture has an unusual infolded form. This ring-like aperture should be considered as unique in Annonaceae in this respect (although ring-like apertures independently occur in very many angiosperm groups (Hesse & Zetter 2005)). It is not known if this aperture type is connected to a distinct mode of pollination.…”

Section: Palynologymentioning

confidence: 99%

Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae)

Maas¹,

Westra²,

Guerrero³

et al. 2015

blum - j plant tax and plant geog

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A taxonomic revision of the genus Guatteria, including the former genera Guatteriella, Guatteriopsis and Heteropetalum is given. Within the genus Guatteria 177 species are recognized, 25 of which are new. Included are chapters on the history of the taxonomy of the genus, morphology, wood anatomy, karyology, palynology, chemistry, flower biology and pollination, dispersal, distribution and ecology, phylogeny and molecular studies, conservation, and uses. A synoptical key to all species is included, as well as two dichotomous keys, one for the species of Central America and Mexico, and one for the species of NE, E and SE Brazil. The species treatments include descriptions, full synonymy, geographical and ecological notes, vernacular names and taxonomic notes. For all species distribution maps are made. A complete identification list with all exsiccatae studied, an index to vernacular names and an index of scientific names is included at the end.

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“…Among dispersed pollen a fully zonate taxon Afropollis zonatus from the Early Cretaceous of Spain may belong possibly to the Nymphaeales (Hesse & Zetter, 2005). The oldest reported fossil pollen grains of most likely nymphaealean affinity, Zonosulcites, are from the Campanian and Canadian Maastrichtian (Muller, 1981(Muller, , 1984Taylor, 1990).…”

Section: Introductionmentioning

confidence: 99%

Pluricarpellatia, a nymphaealean angiosperm from the Lower Cretaceous of northern Gondwana (Crato Formation, Brazil)

Mohr

Bernardes-de-Oliveira

Taylor

2008

TAXON

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A fossil herbaceous angiosperm, Pluricarpellatia peltata gen. et sp. nov., is described from the Lower Cretaceous Crato Formation of northeastern Brazil. The description is based on several nearly complete specimens with roots, cordate, excentrically peltate to centrally peltate leaves, and flowering structures with in situ seeds. The seeds are smooth to verrucate and have the micropyle and hilum close together and have laminar placentation. Pluricarpellatia shares several characters with extant Nymphaeales, such as a rhizomatous growth form and simple, petiolate, peltate leaves, and laminar placentation. Similarities to Cabombaceae include an apocarpous gynoecium. However, the carpel morphology clearly differs from extant Cabombaceae so that Pluricarpellatia is considered to represent an extinct member of Nymphaeales, most likely branching off early in this lineage, and may thus be the most basal member of this clade described so far. In addition to Pluricarpellatia an unnamed nymphaealean plant (Taxon A), possibly belonging to the Nymphaeaceae, is described. During the late Aptian to earliest Albian representatives of Nymphaeales may have already developed a moderate diversity.

show abstract

Ultrastructure and diversity of recent and fossil zona-aperturate pollen grains

Cited by 30 publications

References 50 publications

Pollen structure and development in Nymphaeales: Insights into character evolution in an ancient angiosperm lineage

Pollen structure and development in Nymphaeales: Insights into character evolution in an ancient angiosperm lineage

Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae)

Pluricarpellatia, a nymphaealean angiosperm from the Lower Cretaceous of northern Gondwana (Crato Formation, Brazil)

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