Guernsey Fleabane - Conyza sumatrensis
A tall (to over 1.5 metres) and very conspicuous plant when mature. Flowers with hairy phyllaries.
There are 3 very similar Conyza (syn - Erigeron): Canadian, Bilbao's and Argentine Fleabanes. Separating them is tricky; reference should be made to the key in Stace (4th edition)
Inflorescence is pyramidal, and pappus is yellowish-white. The phyllaries are greyish green, and hairy; they may be minutely red-tipped (not always). C bonariensis (Argentine) often has conspicuously red-tipped phyllaries. Both species have curved marginal hairs on proximal (end closest to leaf-stalk) region of leaves; Canadian and Bilbao's have straight hairs in this region.
The County Recorder has asked for a specimen of this plant to be retained for verification
Usually found in areas of well-drained, open and disturbed ground, such as waste land, railway-sides and docks, chiefly around towns. It also occurs as a wool casual.
Flowering July to October.
Annual. Fruit is wind-dispersed.
Becoming widespread and increasingly frequent in many parts of Britain.
A new arrival to our region in 1997, it seems to be increasing in Leicestershire and Rutland. It was not recorded in the 1979 Flora survey of Leicestershire.
Leicestershire & Rutland Map
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