Description: A roadside weed producing small burrs in Patagonia. Date: 13 March 2015, 21:46. Source: Acaena pinnatifida. Author: Dick Culbert from Gibsons, B.C., Canada.
Description: English: Botanical specimen in the Regional Parks Botanic Garden, Berkeley, California, USA. Date: 14 November 2013, 19:42:55. Source: Own work. Author: Daderot.