Herbs annual or biennial, 1.2m high. Stems erect, branched, angular, rarely unbranched. All the stems and branches are covered with white powder, covered with sparse spider silk hair or depilated.
Silybum marianum is an annual or biennial herb of Silybum in Compositae, and its height can reach1.2m. The stems are erect, angular and rarely unbranched, the leaves are the same color on both sides, green, with white spots, thin texture, big head, broad spoon-shaped middle and outer bracts, oval, rhombic to lanceolate, hairless, and the middle and outer bracts are hard and leathery.
Distributed in Europe, Mediterranean, North Africa and Central Asia. It is cultivated in parks, botanical gardens or gardens all over China.
Resources Milk Thistle _ Baidu Encyclopedia