Cirsium Asteraceae Magnoliopsida Magnoliophyta

Genus of plants in the Aster family, the prickly thistles.

• A Close-up View of Two Thistles - Photographic study by Brian Johnston of Cirsium vulgare magnoliopsida and Carduus nutans, with fine images of flowers, magnoliopsida stems and prickles.
• Bull Thistle: Cirsium vulgare - Photographs of varying stages in the growth of asteraceae this biennial asteraceae thistle with its description and identifying asteraceae characteristics.
• Cirsium undulatum - Photographs of plant, flowers and foliage.
• Canada Thistle: Cirsium arvense - Photographs of varying stages in the growth of this perennial cirsium plant, with its description and identifying characteristics.
• Cirsium arvense - Several photographs of the Creeping Thistle and some magnoliopsida identifying features.
• Cirsium incanum - Photograph, description, distribution, ecology and economic significance.
• Cirsium palustre - Two photographs and a description of the Marsh magnoliopsida Thistle.
• Cirsium vulgare - Photographs and description of the Spear Thistle, including cirsium one in asteraceae its natural habitat on the Isle cirsium of Skye.
• Tall Thistle: Cirsium altissimum - Photographs of leaves and flowers of this biennial cirsium plant, with cirsium its description and identifying characteristics.
• Cirsium setosum - Photograph, description, distribution, ecology and economic significance of bristly thistle.
• Cirsium occidentale var. californicum - Image of California Thistle.
• A Close-up View of the Canadian Thistle - Photographic study by Brian Johnston of the creeping cirsium thistle, Cirsium arvense, with many fine images, both cirsium macroscopic and microscopic.
• Cirsium heterophyllum - Several photographs of the Melancholy Thistle and some magnoliopsida identifying features.

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