Althaea cannabina Althaea cannabina Althaea cannabina, commonly called palm-leaf marshmallow or hemp-leaved hollyhock, is a perennial herb belonging to the genus "Althaea" of the Malvaceae family. The leaves resemble those of hemp ("Cannabis sativa"), hence the specific epithet "cannabina" ("hemp-like"). "Althaea cannabina" reaches on average of height. The stem is erect, cylindrical, pubescent and very branched. Lower leaves are petiolate, hairy and almost completely subdivided in three-five segments, linear or linear-lanceolate, toothed or lobed, up to wide and long. The upper leaves are simply lobed and toothed. The flowers are solitary or in clusters and grow in the axils of the leaves,
Verbena officinalis plant" or "wild hyssop". The common name "blue vervain" is also sometimes used, but also refers to "V. hastata". And of course, being the only member of its genus in much of its range, it is also simply known as "the vervain" locally. The common names of "V. officinalis" in many Central and Eastern European languages often associate it with iron, for example: Common vervain was scientifically described by Carl Linnaeus his 1753 "Species Plantarum". The scientific name references the Ancient Roman term "verbena", used for any sacrificial herb considered very powerful (as described e.g. by Pliny the Elder). "Officinalis",