“…Xanthium albinum (Fig. 37) is native to North America, probably to the northern USA and southern Canada (Widder 1925). In Europe it occurs in the temperate zone from France in the west as far as eastern European Russia in the east (Meusel & Jäger 1992, Wisskirchen 1995, Greuter 2006.…”
“…Xanthium ripicola (Fig. 38) is probably native to the same area as X. albinum (Widder 1925). There are three herbarium records of this taxon from the Czech Republic, spanning from 1905 to 1983.…”
“…Xanthium albinum (Fig. 37) is native to North America, probably to the northern USA and southern Canada (Widder 1925). In Europe it occurs in the temperate zone from France in the west as far as eastern European Russia in the east (Meusel & Jäger 1992, Wisskirchen 1995, Greuter 2006.…”
“…Xanthium ripicola (Fig. 38) is probably native to the same area as X. albinum (Widder 1925). There are three herbarium records of this taxon from the Czech Republic, spanning from 1905 to 1983.…”
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