Chloroplast DNA sequences are a primary source of data for plant molecular systematic
studies. A few key papers have provided the molecular systematics community with …

Friedman WE, RC Moore, and MD Purugganan. 2004. The evolution of plant development.
Am. J. Bot. 91: 1726–1741. Friis EM, PR Crane, and KP Pedersen. 1997. Fossil history of …

Darwin's studies on heterostyly in Primula described two floral morphs, pin and thrum, with
reciprocal anther and stigma heights that promote insect-mediated cross-pollination. This …

The genus Primula is the largest among the Primulaceae and is widespread mainly in the
cold and temperate regions of the Northern Hemisphere. Since the beginning of the …

Inferring interfamilial relationships within the eudicot order Ericales has remained one of the
more recalcitrant problems in angiosperm phylogenetics, likely due to a rapid, ancient …

Heterostyly is a wide-spread floral adaptation to promote outbreeding, yet its genetic basis
and evolutionary origin remain poorly understood. In Primula (primroses), heterostyly is …

Senna (Leguminosae) is a large, widespread genus that includes species with
enantiostylous, asymmetric flowers and species with extrafloral nectaries. Clarification of …

The use of DNA sequence data in plant systematics has brought us closer than ever to
formulating well-founded hypotheses about phylogenetic relationships, and phylogenetic …

Karyotypic change constitutes an important evolutionary mechanism contributing to in
angiosperm diversification and speciation. Comparative analyses of the karyotype usually …

The exceptional species diversity of flowering plants, exceeding that of their sister group
more than 250-fold, is especially evident in floral innovations, interactions with pollinators …