Sumatran fleabane

Sumatran Fleabane (Conyza sumatrensis)
It is common on waste ground, railways and disturbed ground. It is known by the floral bracts which are distinctly hairy (in contrast to C. canadensis and C. bilbaoana) and by the leaf margin hairs (which are bent forward rather than spreading at right angles as in C. canadensis). It flowers in August and September and has dirty white or rust coloured pappus hairs. Although an abundant alien, it is not invasive in any natural or semi-natural habitats.

Originating in the American continent, this is an introduced weed in the UK, which in certain countries has started to exhibit resistance to herbicides.

In Britain, of the alien British Conyza species, this is the second most abundant (after C. canadensis) and is typically found in London and the South East of England.

It is also found in countries such as: Japan, Malaysia, Taiwan, Sri Lanka, Australia.

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"A weed is a plant whose virtues have not yet been discovered."Ralph Waldo Emerson