Thursday, March 17, 2016

Botany picture #226: Conyza sumatrensis presumably

From a little trip to Cotter Avenue (not really an avenue but a playground and bathing site on Cotter River) last weekend:

These plants are rather too large to be Conyza bonariensis, so although the pappus does not entirely convince me as "golden" I will tentatively call them C. sumatrensis. Apart from general size and pappus colour (white to pink in C. bonariensis) the two species are rather similar.

Both are weeds introduced to Australia from the Americas, and they are rather common, widespread, and flower most of the year.

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