Marrubium peregrinum

Hungarian Horehound ( Marrubium peregrinum )

The Hungarian Horehound ( Marrubium peregrinum ) is a species of the genus Horehound ( Marrubium ) in the mint family ( Lamiaceae).

Description

Marrubium peregrinum is a perennial, herbaceous plant with plant height to 60 cm. The stems are hairy pressed with short, whitish or yellowish tomentose trichomes. For almost all armpits spring protruding branches. The leaves are oblong or verkehrteiförmig, wedge-shaped at the bottom and notched - cut on the edge. The pubescence is whitish tomentose on the underside denser than on the top. The petiole is shorter than the leaf blade.

The inflorescence consists of Scheinquirlen with up to ten flowers, which are apart or heaped on the top side branches occur. The bracts are short, subulate or tiny. The calyx tube is 3.5 to 5 mm long, zehnrippig and hairy tomentose with appressed trichomes. The five calyx teeth are 1.5 to 3 mm long, lanceolate - subulate, erect or later stand-off. The crown is colored white and surmounted the calyx teeth.

The chromosome number is 2n = 34

Occurrence

The species is widespread in Southeast and East Central Europe, reaching on the north western boundary of the closed area, the Pannonian embossed parts of Austria (Burgenland, Vienna, Lower Austria ). In addition, there are some partially stable for centuries, partly inconsistent, based on introduction deposits in the arid regions of Central Europe. In Germany two occurrences in the eastern Harz Foreland are still current; the species is threatened with extinction here.

The type missing on Crete; the synonym Marrubium creticum Mill and its translation " Cretan Horehound " is factually inaccurate.

Locations of the species are dry waste places and ruderalisierte dry grasslands, especially on loess.