The blooming Cirsium arvense cover photo - 317931659

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Cover photo description:
Cirsium arvense var. integrifolium is a perennial herbaceous plant of the Asteraceae family, belonging to the genus Cirsium. [8] There are straight roots and rhizomes underground The stem is upright, and the young stem is covered with white spider like hairs Single leaf alternate, margin with spiny teeth, basal leaves early deciduous, both sides covered with white spider like hairs. Dioecious plants, male plants have smaller head shaped inflorescences, while female plants have larger inflorescences. The corolla and anthers are purple red, and female flowers have degenerated stamens Achenes are elliptical or elongated, slightly flattened, with a light yellow to brown surface and wavy horizontal wrinkles.

achenes alternate anthers arvense asteraceae basal belonging brown cirsium corolla covered deciduous degenerated dioecious early elliptical elongated family female flattened flowers genus hairs head herbaceous horizontal inflorescences integrifolium larger leaf leaves light like male margin perennial plant plants purple red rhizomes roots shaped sides single smaller spider spiny stamens stem straight surface teeth underground upright var wavy white wrinkles yellow young