It has been suggested that pollen ornamentation can be used to distinguish infrageneric
groups in Quercus. Here, we document pollen morphology of nearly all species of Quercus …

Oriental plane tree (Platanus orientalis) is native to the East Mediterranean region and sister
to three western North American species, together forming the Pacific North American …

Premise of research. The Eocene flora of Republic, Washington, is well known for its
diversity of conifers and broad-leaved deciduous forest elements. Previously, the only …

A multiscale approach combining phase-contrast X-ray micro-and nanotomography is
applied for imaging a Cretaceous fossil inflorescence in the resolution range from 0.75 μm to …

An advanced protocol to prepare single extant and fossil pollen grains for transmission
electron microscopy (TEM) analysis allows for the fast recovery of data on the ultrastructure …

Platanaceae has a rich fossil history that goes back to the Early Cretaceous. Here I address
major issues in the Platanaceae fossil record through revision and description of new fossil …

Pollen grains found on, or within, pistillate reproductive structures are described for
numerous gymnosperms and angiosperms. Attribution of these pollen grains to the …

The Thyrsacanthus clade belongs to the Tetramerium lineage (Justicieae–Acanthaceae)
and possesses 12 species distributed among dry forests of South America and Mexico. The …

Spherical flower heads have often been reported from the late Early and Late Cretaceous of
Asia and North America, but are rare in Europe. Palaeobotanists have included them in …

The range of the variability of the morphological characters of stamens and pollen grains in
Platanus x acerifolia (Aiton) Willd. from different geographical locations—Anapa, Krasnodar …