Orobanche andryalae (Orobanchaceae): a new species from the Canary Islands

A new species of <i>Orobanche</i> is described from the Canary Islands. The plant belongs to the complicated Subsection Minores and has a distinct combination of morphological features, ecology, and host specificity. The markedly cernuous corolla, high filament insertion and colouration distinguishes <i>Orobancheandryalae</i> from closely related species with which it has been previously confused, and which do not occur in the Canary Islands, including O.amethysteasubsp.castellana and <i>O.calendulae</i>; these features remain stable in cultivation. <i>Orobancheandryalae</i> appears to be parasitic almost exclusively on <i>Andryala</i> spp., and occurs on thermophilus volcanic substrates in northern Lanzarote, northwest Tenerife and Jandía in Fuerteventura. An updated key to the <i>Orobanche</i> of the Canary Islands is presented, including the new taxon we describe here.