Spear Thistle (Cirsium vulgare)

Category: Nature

 

Photo and caption by Konstantinos Arvanitopoulos

Cirsium vulgare (Spear Thistle) is a species of the genus Cirsium, native throughout most of Europe, western Asia, and northwestern Africa. It is also naturalised in North America and Australia and is as an invasive weed in some areas. It is a tall biennial or short-lived monocarpic thistle, forming a rosette of leaves and a taproot up to 70 cm long in the first year, and a flowering stem 1–1.5 m tall in the second (rarely third or fourth) year.

Location: Lake Kerkini, Greece

 

More Nature Entries »

 
  1. Catch of the Day

    By Brenda Stevens

  2. Floating on Calm Water

    By Gian Luigi Fornari Lanzetti

  3. Green Rice Paddies of Ubud

    By Chris Fries