Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Cockleburs (Xanthium) are a genus of flowering plants in the family Asteraceae, native to the Americas and eastern Asia. They are coarse, herbaceous annual plants growing to 19.69-47.24 in (1.5 to 4 ft) tall. The leaves are spirally arranged, with a deeply toothed margin. Some species, notably X. spinosum, are also very thorny with long, slender spines at the leaf bases. The flowers are of two types; One, in short terminal branches, produces only pollen. The other, in clusters in the axils of the leaves, produces seed.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.