- tall Old World biennial thistle with large clasping white-blotched leaves and purple flower heads; naturalized in California and South America ...
This is a preview. Log in through your library . Abstract (1) Seedlings of six species of thistle (Carduus nutans, C. `pycnocephalus', Carthamus lanatus, Cirsium vulgare, Onopordum aff. illyricum and ...
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