Rhubarb

Rhubarb, whose scientific name is Rheum Officinale, belongs to the Polygoniaceae family and is a perennial plant, generally very large that can exceed two meters in height. It has a basal rosette with large palmate-lobed leaves that can reach up to 80 centimeters and have an entire or serrated edge. From the base of the leaves emerge long reddish stems at whose apex hangs a bisexual flower, with a radial shape similar to a panicle and varying in color from white to pink, from yellow to green, depending on the variety of rhubarb. Its root is very large with a fleshy and robust rhizome which is used precisely for the extraction of the drug. From the rhizome, every year at the vegetative restart, the leaves of the basal rosette grow while the rhizome is harvested in autumn starting from the second year of vegetation.