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Carduus acanthoides L.

Captura: Camprodon, Vall de Camprodon, Ripollès, Catalunya.

 

 

ENGLISH

Carduus acanthoides, known as the spiny plumeless thistle, welted thistle, or plumeless thistle, is a biennial plant species of thistle in the sunflower family (Asteraceae). The plant is native to Europe and Asia and introduced in many other areas, where it is sometimes considered an invasive species.

Carduus acanthoides may exceed 2 metres (6.6 ft) in height and can form weedy monotypic stands. The stem and foliage are spiny and sometimes woolly. The specific epithet acanthoides refers to its spiny foliage. The plant starts from a flat, basal rosette and then bolts an erect stem with occasional toothed, wrinkled, spiny leaves. The leaves are 4–8 in (10–20 cm) long with lobed or pinnately-divided edges. The abaxial surface (underside) of the leaf is somewhat hairy.

At the top of each branch of the stem is an inflorescence of one to several flower heads, each rounded, covered in spiny phyllaries, and bearing many threadlike, purple or pink disc florets. Each flowerhead is around 0.5–1 in (13–25 mm) across. It flowers throughout the summer and early fall. The achenes are 2–3 mm long, four-angled, with faint lengthwise stripes. The

fluffy pappus bristles are 11–13 mm long. After flowering and setting seed, it dies.

 

WIKIPEDIA

 

 

 

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Uploaded on June 29, 2023
Taken on July 12, 2021