Three new species in the genus
E. bicolor, E. stephani, E. velutina
) are described,
is reconsidered and
is elevated to species rank based on a new concept evolved by the author, different from that of Kaastra (1977, 1982).
Esenbeckia dorantesii, a new species in the genus Esenbeckia Kunth (Rutaceae) is described. This species from the coastal zone of the state Veracruz, Mexico, is similar to E. macrantha Rose from the state of Oaxaca.
is described. This species belongs to the new
genus in the Anacardiaceae family. Its principal characters are the scandent habit and the bicarpelar gynoecium. Actually is only known from collections in limestone soils.
We investigated the features of the glass transition relaxation of two room temperature ionic liquids using DSC. An important
observation was that the heat capacity jump, that is the signature of the glass transition relaxation, shows a particularly
strong value in this type of new and promising materials, candidates for a range of applications. This suggests a high degree
of molecular mobility in the supercooled liquid state. The study of the influence of the heating rate on the temperature location
of the glass transition signal, allowed the determination of the activation energy at the glass transition temperature, and
the calculation of the fragility index of these two ionic glass-formers. It was concluded that this kind of materials belong
to the class of relatively strong glass-forming systems.
Esenbeckia vazquezii, a new species of Esenbeckia Kunth (Rutaceae) with round fruit is described. It was found in the Spa “El Texcal” located in the Chichinautzin lava beds near Cuernavaca, Morelos. Because it is growing in an urbanised area, probably it is endangered.
Se describe una nueva especie del género Esenbeckia Kunth (Rutaceae) procedente del Istmo de Tehuantepec, México. Esta nueva especie se encontró conviviendo con E. collina Brandegee.
A new species in the genus Esenbeckia (Rutaceae) from the Tehuantepec Isthmus, Mexico – A new species in the genus Esenbeckia Kunth (Rutaceae) is described. This species from the Tehuantepec Isthmus, Mexico is sympatric with E. collina Brandegee.
A new species of Chomelia is described; at this time it has been collected only at the type locality. It is similar to the Mexican–Mesoamerican species Chomelia longituba (Borhidi) Borhidi, but can be easily distinguished by the position of the inflorescence, by the form of the stigma lobes and the size of the fruit.