Althaea (plant) Althaea (plant) Althaea is a genus of 6–12 species of perennial herbs native to Europe, North Africa and western Asia. It includes "Althaea officinalis", also known as the marshmallow plant, whence the fluffy confection got its name. They are found on the banks of rivers and in salt marshes, preferring moist, sandy soils. The stems grow to 1–2 m tall, and flower in mid summer. The leaves are palmately lobed with 3–7 lobes. "Althaea" species are used as food plants by the larvae of some Lepidoptera species including "Bucculatrix quadrigemina". The genus formerly included a number of additional species now
Pulmonaria officinalis pink at first, later turn to blue-purple during the anthesis, by changing the pH value inside of the petals. As a matter of fact the flowers contain a dye that belongs to the anthocyanins and change the color from red (acidic) to blue (alkaline). "Pulmonaria officinalis" is diploid and has the chromosome number 2n = 14. Flowering period extends from March through May and the seeds ripen from May to June. Pollination is granted by insects (entomophily) - mainly bees, bumblebees and butterflies - the spread of seeds over ants. The plant has been cultivated for centuries as a medicinal