Pollen Morphology of the Aceraceae

Biesboer, David D.

doi:10.1080/00173134.1975.11864620

Cited by 22 publications

(14 citation statements)

References 7 publications

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“…Although Billia and Handeliodendron, thought to be close relative of Aesculus (Xiang et al, 1998;Forest et al, 2001), were not sampled here, the analysis confirms the definition of Hippocastanoideae as previously suggested by Judd et al (1994) and Harrington et al (2005). This temperate clade is charac- terized by deciduous opposite simple leaves (generally palmatilobate), two ovules per locule and a type-A pollen (Biesboer, 1975;Müller and Leenhouts, 1976, Fig. 1).…”

Section: Phylogenetic Relationshipssupporting

confidence: 67%

Plastid and nuclear DNA markers reveal intricate relationships at subfamilial and tribal levels in the soapberry family (Sapindaceae)

Buerki

Forest

Acevedo‐Rodríguez

et al. 2009

Molecular Phylogenetics and Evolution

138

271

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a b s t r a c tThe economically important soapberry family (Sapindaceae) comprises about 1900 species mainly found in the tropical regions of the world, with only a few genera being restricted to temperate areas. The infrafamilial classification of the Sapindaceae and its relationships to the closely related Aceraceae and Hippocastanaceae -which have now been included in an expanded definition of Sapindaceae (i.e., subfamily Hippocastanoideae) -have been debated for decades. Here we present a phylogenetic analysis of Sapindaceae based on eight DNA sequence regions from the plastid and nuclear genomes and including 85 of the 141 genera defined within the family. Our study comprises 997 new sequences of Sapindaceae from 152 specimens. Despite presenting 18.6% of missing data our complete data set produced a topology fully congruent with the one obtained from a subset without missing data, but including fewer markers. The use of additional information therefore led to a consistent result in the relative position of clades and allowed the definition of a new phylogenetic hypothesis. Our results confirm a high level of paraphyly and polyphyly at the subfamilial and tribal levels and even contest the monophyletic status of several genera. Our study confirms that the Chinese monotypic genus Xanthoceras is sister to the rest of the family, in which subfamily Hippocastanoideae is sister to a clade comprising subfamilies Dodonaeoideae and Sapindoideae. On the basis of the strong support demonstrated in Sapindoideae, Dodonaeoideae and Hippocastanoideae as well as in 14 subclades, we propose and discuss informal groupings as basis for a new classification of Sapindaceae.

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Section: Phylogenetic Relationshipssupporting

confidence: 67%

Plastid and nuclear DNA markers reveal intricate relationships at subfamilial and tribal levels in the soapberry family (Sapindaceae)

Buerki

Forest

Acevedo‐Rodríguez

et al. 2009

Molecular Phylogenetics and Evolution

138

271

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“…macrophyllum Pursh, A. ginnala Maxim., A. truncatum Bunge, Acer palmatum Thunb., (Biesboer, 1975;Li et al, 2010;Miyoshi et al, 2011;Halbritter & Buchner, 2011 (Biesboer, 1975;Clarke & Jones, 1978;Tian et al, 2001) but differs in larger size. Present in all samples.…”

Section: Crataegus Spmentioning

confidence: 99%

“…-Pollen, prolate, outline elliptic in equatorial view, polar axis 45-48 µm (LM), 37-40 µm (SEM), equatorial diameter 27-30 µm (LM), 22-24 µm (SEM); eutectate, exine 1.5-2 µm thick, nexine thinner than sexine, tricolpate; sculpturing striate (LM), striate, fossulate, perforate (SEM), striae running parallel to polar axis, striae smooth, striae width 0.3-0.6 µm, perforations only present in grooves between striae; abundance: rare. (Biesboer, 1975;Li et al, 2010;Tian et al 2001). Acer/Dipteronia Type 1 of Hascall (1988, pl.…”

Section: Crataegus Spmentioning

confidence: 99%

“…can be securely identified to species level (cf. Biesboer, 1975;Fürstl, 2002;Tian et al, 2001). Acer vel Dipteronia sp.…”

Section: Crataegus Spmentioning

confidence: 99%

“…-Both extant species of Dipteronia produce tricolporate, prolate to subspheroidal pollen with exine ornamentation consisting of striae running parallel to the polar axis, and a size range 19.1-27 µm of the polar axis (Biesboer, 1975;Li et al, 2010;Tian, et al, 2001). In extant Acer pollen exine ornamentation can range from rugulate, microrugulate, microreticulate, striato-reticulate to striate, which is the predominant sexine pattern (Biesboer, 1975;Clarke & Jones, 1978;Fürstl, 2002;Jones et al, 1995;Li et al 2010;Miyoshi et al, 2011;Tian, et al, 2001;Stuchlik, 2014). Pollen of Acer is of only limited infrageneric taxonomic significance due to its highly variable morphology (size, shape, aperture, ornamentation) within infrageneric clades.…”

Section: Crataegus Spmentioning

confidence: 99%

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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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