Apomixis, the reproduction via asexually formed seed, is taxonomically scattered in
angiosperms. Here we review the major developmental pathways to apomixis and the …

This account presents information on all aspects of the biology of Crataegus monogyna
Jacq.(Hawthorn) that are relevant to understanding its ecological characteristics and …

Background Hawthorn species (Crataegus L.; Rosaceae tribe Maleae) form a well-defined
clade comprising five subgeneric groups readily distinguished using either molecular or …

The hawthorns (Crataegus spp.) are widely distributed and famous for their edible and
medicinal values. There are∼ 18 species and seven varieties of hawthorn in China …

DNA barcodes can facilitate identification of organisms especially when morphological
characters are limited or unobservable. To what extent this potential is realized in specific …

Apomixis is a difficult-to-analyse trait with a complex molecular basis and a substantive
effect on the biology of a species. Thus, apomixis is an interesting characteristic for …

This paper updates earlier reviews of polyploidy and reproductive biology in the Rosaceae,
and does so with a focus on hybridization in relation to polyploidy and (facultative) …

Background and Objectives: Polyploidisation and frequent hybridisation play an important
role in speciation processes and evolutionary history and have a large impact on …

Abstract Background and Aims The taxonomic complexity of Crataegus (hawthorn;
Rosaceae, Maleae), especially in North America, has been attributed by some to …

We compare biogeographic and morphological parameters of two agamic complexes of
western North American hawthorns so as to evaluate possible explanations of the …