New species or interesting records of foliicolous lichens.: VIII.: Two new taxa from tropical Africa, with a key to sorediate Fellhanera species

Two new species belonging to the lichen families Pilocarpaceae and Ectolechiaceae are described from tropical Africa: Calopadia lucida sp. nov. (Ertolechiaceae) from Tanzania, being similar to C. puiggarii but differing in the UV fluorescent thallus and the pruinose apothecia, and Fellhanera ivoriensis sp, nov. (Pilocarpaceae) from the Ivory Coast, differing from the related F. rhapidophylli by the sorediate thallus and from other sorediate taxa by the combination of pale soralia, dark brown apothecia, and the ellipsoid-bacillar conidia. A key to the nine sorediate species of Fellhanera is provided. (C) 2001 The British Lichen Society.