Verbascum thapsus L.
common or woolly mullein, flannel or velvet plant Scrophulariaceae

This woolly, biennial, rosette plant forms a dense ground cover displacing slower-growing native species. The seeds are wind-dispersed. Fires are retarded in stands of this plant under normal conditions. Mullein has been partially controlled by a gall-forming insect which has reduced population size and range significantly.

The plant is found between 2,200-3,100 m on Mauna Kea, Hawai'i.

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