Two new species from northeastern Somalia, Dicoma paivae and Dicoma cinerea (Asteraceae), both of section Psilocoma Harv., are described. Dicoma paivae is most similar to Dicoma cana Balf. f. of Socotra Island, from which it can be distinguished by its wider, twisted branches, larger, aristate, conduplicate leaves, smaller capitula, and straw-coloured, coriaceus inner phyllaries. Dicoma cinerea is very closely related to Dicoma schimperi (DC.) O. Hoffm. of northeast tropical Africa and the Arabian Peninsula, from which it can be distinguished by the dense whitish tomentum covering the whole plant and by its broadly ovate to almost orbicular leaves with margins bearing bulbous teeth. Key words: Asteraceae, Dicoma, new species, tropical Africa, Somalia.