Over centuries of plant morphological research, biologists have enthusiastically explored
how distinct vascular arrangements have diversified. These investigations have focused on …

Lianas (woody vines) have a critical role in ecosystem dynamics, especially in the tropics. At
present, there is an increasing need to develop reliable methods to measure liana's growth …

Abstract Background and Aims The tribe Paullinieae has the highest diversity of vascular
variants among the seed plants. The developmental diversity is better understood in the …

Studies of anatomically preserved fossils provide a wealth of information on the evolution of
plant vascular systems through time, from the oldest evidence of vascular plants more than …

Background Phloem wedges furrowing the wood are one of the most notorious, widespread
types of cambial variants in Angiosperms. Many lianas in Malpighiaceae show these …

The liana genus Paullinia L. is one of the most speciose in the neotropics and is unusual in
its diversity of stem macromorphologies and cambial conformations. These so-called …

Abstract Development of the cambial variant is characteristic to most of the climbing
members of the Fabaceae and is considered as an alternative path to increase their stem …

A taxonomic revision of Mcvaughia is presented, including the description of a new species
from the state of Piauí, Brazil, and notes on wood, secondary phloem, leaf, and floral morpho …

The worldwide use of ayahuasca, an entheogenic tea originally used in ceremonial context
by Amazonian peoples, has increased in the last decade. In Brazil,“seringueiros” or rubber …

Abstract The Apocynaceae subfamilies Secamonoideae and Asclepiadoideae have
undergone several transitions during their evolution with regard to growth form and degree …