Spear Thistle (Cirsium vulgare) - Botanical Illustration & Identification Guide #1799609 (License: Personal Use)

This precise black-and-white botanical drawing illustrates key diagnostic features of Cirsium vulgare, including the dense, globular purple flower heads, deeply lobed and spiny-margined leaves, and the elongated seed head with feathery pappus. The inset on the left shows a longitudinal section of the achene and pappus, while the scale marker (1/2) indicates the drawing is half life-size. Such illustrations are essential for taxonomic keys and field guides.

Used in botanical field guides, academic publications, and online plant identification resources; supports users seeking to distinguish Cirsium vulgare from similar thistles through morphological detail.