van der Burgt X.M.,Herbarium
Plant Ecology and Evolution | Year: 2010
Background - In the course of the identification work of trees in the permanent plots around the "P transect" in the southern part of Korup National Park, Cameroon, two new taxa in Magnistipula Engl. were discovered. Key results - Magnistipula multinervia Burgt and Magnistipula butayei De Wild. subsp. korupensis Burgt (Chrysobalanaceae) are described and illustrated. M. multinervia is the thirteenth described species of Magnistipula. It is a rainforest tree to 41 m high with relatively small leaves (usually 7-10 cm long), and with stipules to 12 × 4 mm, with 10-20 parallel, longitudinal veins. M. butayei subsp. korupensis is the eleventh described subspecies of M. butayei. It is a rainforest tree to c. 30 m high with relatively elongated flowers and elongated persistent stipules. Conservation status - The two new taxa are only known from the southern part of Korup National Park in Cameroon. Both taxa are very rare; a survey done of 8936 trees over 10 cm stem diameter resulted in respectively four and fourteen trees registered of the two taxa. The numbers of known living trees presently are four and fifteen. The IUCN conservation status of both taxa is assessed as "Critically Endangered" CR D. © 2010 National Botanic Garden of Belgium and Royal Botanical Society of Belgium.
Bioinformatics (Oxford, England) | Year: 2010
MATICCE is a new software package in the R language for mapping phylogenetic transitions in organismal traits that have continuous distributions. MATICCE integrates over phylogenetic and model uncertainty and provides simulation functions for visualizing evolutionary scenarios based on estimated parameter values. MATICCE is written in the open source R language and freely available through the Comprehensive R Archive Network (http://cran.r-project.org/web/packages/maticce).
Nordic Journal of Botany | Year: 2011
Nepenthes robcantleyi Cheek sp. nov. from Mindanao, Philippines is described and illustrated in the Regiae group of Danser, as the second taxon of that group known from the Philippines. The conservation status of the species is assessed as 'Critically Endangered' (CR) as the only known population, found in 1997, has allready been logged and the species may then has gone extinct in the wild. © 2011 The Author. Nordic Journal of Botany © 2011 Nordic Society Oikos.
Phytotaxa | Year: 2016
The neotropical species of Trichilia are revised. The last major treatment of the group was published in 1981 and 3500 additional collections are examined for the present study. Eighty-one species are recognized, a key to the species is provided, all names are typified and descriptions of all species are given. Substantial changes to the known distribution patterns are documented for species. Distribution maps of all species are provided. Ten new species and one new subspecies are described. © 2016 Magnolia Press.
Kew Bulletin | Year: 2013
The identity of Cosmos herzogii (Compositae: Heliantheae: Coreopsidinae), from the Department of Santa Cruz, eastern Bolivia, is discussed. Field observations of critical characters of the rootstock, anther filaments and achenes, of plants identified as Cosmos herzogii, indicated that the material does not belong to Cosmos but rather to Bidens; the relevant combination is made, an English description and a black and white illustration are provided. © 2013 The Board of Trustees of the Royal Botanic Gardens, Kew.