Philodendron luisae (Araceae), a new species from Rio de Janeiro State, Brazil

Abstract

BackgroundPhilodendron is the second largest genus of Araceae, being highly diverse in the Atlantic Forest biome, with nearly one third of the Brazilian species occurring in Southern Brazil, particularly in Rio de Janeiro state. During a local inventory in Silva Jardim municipality, we found a peculiar population of Philodendron growing in lowland rainforest.ResultsAfter morphological analysis and comparisons with similar species, the population proved to be a new undescribed species of subgenus Philodendron section Macrobelium.ConclusionsThe new species, named Philodendron luisae, is here described, illustrated and compared to morphologically close species.Electronic supplementary materialThe online version of this article (doi:10.1186/s40529-015-0082-x) contains supplementary material, which is available to authorized users.

Analytical Methods of Phytochemicals from the Genus Gentiana

“…Tissue culture samples of different stages showed a significant classification, whereas the detailed variation failed to be monitored. This problem was solved through LC [ 107 , 140 ]. FT-IR spectroscopy combined with PCA and partial least squares discriminant analysis (PLS-DA) or IR fingerprinting was also used to distinguish different origins of G. rigescens and G. macrophyllae , respectively [ 139 , 152 ].…”

“…The analysis time is mostly within 30 min without a reduction in resolution [ 17 , 49 , 126 , 148 , 149 ]. For instance, fingerprint analysis of the seed, root, stem, leaf and flower of G. rigescens as well as quantification of metabolites exhibited satisfactory performance in 19 min by UFLC-UV-MS/MS [ 107 , 148 ].…”

“…QQQ with MRM mode was used for the quantitation of targeted analytes. The group of Pan et al used this method for the qualitative and quantitative analysis of different Gentiana species [ 49 , 91 , 107 , 140 , 148 ]. According to the literature on Gentiana , there is no comparison of the advantages and limitations of each mass spectrometer.…”

“…In the leaf, a negative correlation was observed between compounds 21 and 25 . Moreover, compound 21 first increased during the proliferation stage and then decreased [ 107 ]. These accumulation phenomena can be used for industrial extraction and to infer biosynthesis, transformation and degradation.…”

O gênero Philodendron (Araceae) no estado do Paraná

“…Estudos taxonômicos e floras do grupo vêm sendo realizados no Brasil nas últimas décadas, resultando na descoberta de novas espécies (Sakuragui & Mayo 1997;Coelho 1998;Gonçalves 2000;Sakuragui 2001aSakuragui , 2001bSakuragui , 2007Sakuragui et al 2005Sakuragui et al , 2012Coelho & Sakuragui 2007;Calazans & Sakuragui 2013;Gonçalves & Arruda 2013;Buturi et al 2014Buturi et al , 2015Calazans et al 2015).…”