Selvageira (Sideritis Massoniana)

Subshrub of the Labiatae family, whitish-tomentose; flowers arranged in almost always paniculate racemes; lanuginous calyces; very small, yellow corollas. It is found in the ravines of the interior of Madeira, in Ponta de S. Lourenço, in Porto Santo, and in the Desertas. The Madeiran plants have larger leaves and more branched inflorescences than the plants of the other islands. The selvageira, known in Madeira by the name of herva branca, is a useful plant in the treatment of coughs, etc.