Here are all the naturalised exotic senecio species on my monthly runs through Ōtautahi-Christchurch, NZ. Pink=Senecio vulgaris (Europe),yellow=Senecio skirrhodon (Sth Africa),blue=Senecio mikanioides(/Delairea odorata, Europe),red=ragwort(Senecio jacobaea Europe). 7/8 https://t.co/NJ1mO1y9SX

— Jon Sullivan (@JonCounts) 2022.2.28

Here's the 4th of four maps of Senecio species (groundsels) between central Christchurch and the Port Hills. Here is the southern African Senecio skirrhodon, or "gravel groundsel". It's now common in the city centre, having dramatically increased after the earthquakes.#wildcounts https://t.co/3Zeao7vToB

— Jon Sullivan (@JonCounts) 2021.10.10