Pollen morphology of Zelkova sicula (Ulmaceae), a recently discovered relic species of the European Tertiary flora: description, chromosomal relevance, and palaeobotanical significance

Nakagawa, Takeshi; Garfì, Giuseppe; Reille, Maurice; Verlaque, Régine

doi:10.1016/s0034-6667(97)00062-6

Cited by 24 publications

(28 citation statements)

References 4 publications

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“…-Zelkova pollen from all of the six extant western and east Asian and Mediterranean species has been described and figured based on LM and/or SEM investigations by Huang (1972), Takahashi (1989), Stafford (1995), Morita et al (1998), Nakagawa et al (1998), Li et al (2011a) and Miyoshi et al (2011). Studies on the ultrastructure (TEM) of Zelkova pollen are rare (e.g.…”

Section: Sarmatian Palynoflora From Lavanttalmentioning

confidence: 99%

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

Grímsson

Bouchal

Xafis

et al. 2015

Grana

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Section: Sarmatian Palynoflora From Lavanttalmentioning

confidence: 99%

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

Grímsson

Bouchal

Xafis

et al. 2015

Grana

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“…Pollen morphology of extant Zelkova and Ulmus overlap in size, number and position of apertures, and exine sculpturing (Beug, 2004;Li et al, 2010;Stafford, 1995;Takahashi, 1989). Trilete foldings are present in immature pollen of Zelkova sicula DiPasquale, Garfi et Quézel (Nakagawa, 1998), no such folds were encountered in Ulmaceae gen. indet. cf.…”

Section: From Florissant Fruits and Leaves Of Ulmus Tenuinervismentioning

confidence: 90%

“…-Pollen, spheroidal to oblate, outline in polar view ranging from circular to convex triangular to polygonal, equatorial diameter 20-27 µm (LM), 18-22 µm (SEM); eutectate, exine 1.0-1.5 µm thick (LM), nexine thinner than sexine, tri-to pentaporate, ectoaperture ranging from circular to meridional elongated, aperture diameter 1.5-2.0 µm Myoshi et al, 2011;Nakagawa et al, 1998;Stafford, 1995;Takahashi,1989;Xin et al, 1993;Zavada, 1983). The distinct verrucae in Cedrelospermum sp.…”

Section: Family Ulmaceae Mirb Genus Cedrelospermum (Saporta) Manchestermentioning

confidence: 99%

A combined light and scanning electron microscopy study

Bouchal

Zetter

Denk

2016

Grana

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The uppermost Eocene Florissant Formation, Rocky Mountains, Colorado, has yielded numerous insect, vertebrate, and plant fossils. Three previous comprehensive palynological studies investigated sections of lacustrine deposits of the Florissant Formation and documented the response of plant communities to volcanic eruptive phases but overall found little change in plant composition throughout the investigated sections. These studies reported up to 150 pollen and spore phenotypes. In the present paper we used a taxonomic approach to the investigation of dispersed pollen and spores of the Florissant Formation. Sediment samples from the shale units containing macrofossils were investigated using light microscopy (LM) and scanning electron microscopy (SEM). The general picture of the palynoflora is in agreement with previous studies. However, the combined LM and SEM investigation provides important complementary information to previous LM studies. While a fairly large amount of previous pollen determinations could be confirmed, the purported taxonomic affinities of several pollen phenotypes need to be revised. For example, pollen referred to as Podocarpus or Podocarpidites sp. belongs to the Pinaceae Cathaya, Tetracentron). In general, SEM investigations complement the LM palynological studies and improve the identification of dispersed pollen and spores and enable integration of data from dispersed fossil pollen into a wide range of comparative morphological, taxonomic, evolutionary, biogeographic, and phylogenetic studies.

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“…In accordance with Nakagawa et al (1998), a minimum of 400 terrestrial pollen grains has been counted for each sample, except for samples P0 a (168 pollen grains), P0 a D (229) and W c (314) as pollen preservation was problematic in the two moss samples. NPPs have been counted independently on six lines according to a preliminary analysis.…”

Section: Counting Methodsmentioning

confidence: 99%

Modern pollen rain and fungal spore assemblages from pasture woodlands around Lake Saint-Point (France)

Diètre

Gauthier

Gillet

2012

Review of Palaeobotany and Palynology

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Pollen morphology of Zelkova sicula (Ulmaceae), a recently discovered relic species of the European Tertiary flora: description, chromosomal relevance, and palaeobotanical significance

Cited by 24 publications

References 4 publications

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

A combined light and scanning electron microscopy study

Modern pollen rain and fungal spore assemblages from pasture woodlands around Lake Saint-Point (France)

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