Silybum marianum has other name include milk thistle mariana thestle cardus marianus, blessed milk thistle, mary thestle, saint mary thistle, meditarian milk thistle, varieugated thstle and scoth thistle. This spices is an annual or biennial plant of the asteaceas family. This fairly typical thistle has red to purple flower and pale green leaves with white veins. Originally a native of southern europe through asia it is now found through out the world. Possibly native near the coast of south east england, it has been widely introduced outside its natural range, for eg. Into north america, iran, australia and new zealand where it is considered as a invaric . Milk thistle is a thony plant presenting decorative leaves with white pattern of veins and purple flower heads. The plant originate from mountants of the meditarian region were it forms scrubs on a rockey base.