A taxonomic revision of Capnophyllum (Apiaceae: Apioideae)

AbstractThe Cape endemic genus Capnophyllum Gaertn. is revised. As a result of valuable recent collections and extensive fieldwork, this hitherto neglected genus was found to comprise four annual species, two of which are newly described, namely C. lutzeyeri Magee and B.-E.van Wyk, and C. macrocarpum Magee and B.-E.van Wyk. The four species are distinguished from one another by their fruit morphology (relative length of the styles, the shape and position of the stylopodium, fruit size, surface sculpturing, and the presence or absence of a sterile apical portion) and fruit anatomy (marginal wings slightly or prominently involute and secondary ribs present or absent). A comprehensive key to the species, their complete nomenclature and typification, together with complete descriptions and known geographical distributions for all the species are presented and illustrated

Activation and structural and adsorption features of activated carbons with highly developed micro-, meso- and macroporosity

International audienceThree sets of activated carbons (ACs) were pre-pared with the same precursor but activated differently (by CO2or water vapour) with various burn-off levels. The ACs demonstrate increased deviation of the pore shape from the slitshaped model with increasing burn-off and contributions of pores of different sizes depending on the activation type. Significant re-arrangement of adsorption complexes, espe-cially of the Van der Waals type characteristic for nonpo-lar or weakly polar adsorbates (H2,CH4,CH2Cl2,CHCl3),occurs in both micropores and mesopores of ACs with de-creasing temperature. The behaviour of their mixtures with water and DMSO can strongly differ from that of individual adsorbates