trefle
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Asteraceae
Carduus
Carduus pycnocephalus
Carduus pycnocephalus
29% complete
Slender thistle
L. 1763 -
Sp. Pl. ed. 2 2: 1151 (1763)
Specifications
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Synonyms
Carduus tenuiflorus var. pycnocephalus
(L.) DC.
Carduus tenuiflorus subsp. pycnocephalus
(L.) Bonnier & Layens