A monograph on Strophanthus DC. (Apocynaceae)

1. This monograph is written on the genus Strophanthus, and is mainly based on the study of herbarium material.2. The genus occurs in Africa including Madagascar, and in South Asia.3. From the 141 taxonomic names existing, 38 species are recognized, one of which has 2 varieties. Forty-five names are reduced to synonyms for the first time.4. The general part of the monograph consists of short paragraphs on various subjects.5. The systematic part consists of a genus description, a discussion of the relationships within the genus, separate keys for flowering and fruiting specimens, and species diagnoses with lists of synonyms, uses and local names, phenology, notes on systematics, and illustrations. Lists of doubtful species. intermediates, nomina nuda, exluded species, old commercial names, and a index of exsiccatae are provided

Flore d’Afrique Centrale, nouvelle série, Spermatophyta: Apocynaceae, sous-famille I. Apocynoideae et II. Rauvolfioideae.

This volume treats the species belonging to two subfamilies, the Apocynoideae and Rauvolfioideae, of the large Apocynaceae family occurring in the Democratic Republic of the Congo, Rwanda and Burundi. The family is often instantly recognisable through its combination of (usually) opposite leaves and the presence of latex, and these days also comprises the former Asclepiadaceae. The two subfamilies treated here represent the Apocynaceae as formerly delimited. In the Flora area they are represented by 37 genera with 138 species. Most species contain toxic glycosides, and therefore many medicinal uses are known. Each species treatment comes with a full description, synonyms, data on distribution, conservation, habitat, vernacular names and uses, as well as references to additional literature and the citation of representative specimens. User-friendly keys to all genera and species are provided, along with 130 detailed line drawings to assist species recognition

Flora of Singapore precursors, 29: A new name for Ficus dubia Wall. ex King (Moraceae).

The new name Ficus lindsayana Beentje is proposed for the later homonym Ficus dubia Wall. ex King (Moraceae)

Africa's hotspots of biodiversity redefined

A key problem for conservation is the coincidence of regions of high biodiversity with regions of high human impact. Twenty-five of the most threatened centers of plant diversity were identified by Myers et al., and these "hotspots" play a crucial role in international conservation strategies. The primary goal of the hotspots is to cover the most threatened centers of plant diversity, but their efficacy has not yet been tested empirically. For sub-Saharan Africa, our study evaluates the hotspots postulated by Myers and compares them to a set of redefined hotspots proposed on the basis of mapped distribution data for 5985 plant species. The two sets of hotspots overlap by 48%. Our redefined hotspots include 80% of the species and 66% of the range-restricted species of the sub-Saharan flora in areas under high human impact, whereas these values are 15% and 11% lower for Myers's hotspots. Despite having equal size and a considerable spatial overlap with Myers's hotspots, our redefined hotspots include further highly threatened centers of plant diversity in the Maputaland Pondoland Region, in Katanga, the East African Afromontane region, the Lower Guinea Region, and the Albertine Rift. Many of these redefined hotspots are poorly protected centers of plant and animal diversity. Their conservation is essential for a comprehensive coverage of Africa's centers of biodiversity

Africa's hotspots of biodiversity redefined

A key problem for conservation is the coincidence of regions of high biodiversity with regions of high human impact. Twenty-five of the most threatened centers of plant diversity were identified by Myers et al., and these “hotspots” play a crucial role in international conservation strategies. The primary goal of the hotspots is to cover the most threatened centers of plant diversity, but their efficacy has not yet been tested empirically. For sub-Saharan Africa, our study evaluates the hotspots postulated by Myers and compares them to a set of redefined hotspots proposed on the basis of mapped distribution data for 5985 plant species. The two sets of hotspots overlap by 48%. Our redefined hotspots include 80% of the species and 66% of the range-restricted species of the sub-Saharan flora in areas under high humanimpact, whereas these values are 15% and 11% lower for Myers’s hotspots. Despite having equal size and a considerable spatial overlap with Myers’s hotspots, our redefined hotspots include further highly threatened centers of plant diversity in the Maputaland Pondoland Region, in Katanga, the East African Afromontane region, the Lower Guinea Region, and the Albertine Rift. Many of these redefined hotspots are poorly protected centers of plant and animal diversity. Their conservation is essential for a comprehensive coverage of Africa’s centers of biodiversity