This is a preview. Log in through your library . Abstract We investigated two congeners that are biologically very similar but show differences in large- and small-scale distribution. Cirsium vulgare ...

The absence of cross-pollination in Cirsium palustre and Cirsium vulgare resulted in reduced achene production while the achenes produced were heavier than those produced after cross-pollination.

Creeping thistle (Cirsium arvense) and spear thistle (Cirsium vulgare) are two of just five weeds labelled “injurious” under The Weeds Act 1959. Both are strong spreaders and competitors which invade ...

55.3 x 42.9 cm. (21.8 x 16.9 in.) ...

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