Contribution to the knowledge of the genus "Cladonia" in Macaronesia

Sixteen species of the genus Cladonia are reported from Macaronesia from the Canary Islands. Three species are new to canarian flora and, two of them new to Macaronesia. The chemical variation of the taxa is reported. A phytogeographic distribution of the taxa with data on their habitat and ecology are presented.

Contribution to the knowledge of the Stipa-tenacissima Iberian grasslands (All. Stipion tenacissimae)

A syntaxonomic revision of the Iberian "espartales" -dry grasslands dominated by Stipa tenacissima L.- is reoprted. Nomenclatural types as well as floristic, ecologic, dynamic and biographic data  (Stipion tenacissimae, Lygeo-Stipetalia, Lygeo Stipetea) is described for the thermophilous Alcoian espartales, and the name Heteropogono conforti-Stipeton tenacissimae is also validated for the thermophilous Valencian-Tarraconensian ones.