Solvin Zankl / Seeds of Water avens (Geum rivale), Europe. Water aven seeds have numerous hairs, which enable dispersal by wind, as well as a long hooked tail formed by the style, which readily attaches to mammal fu...

Rolf Nussbaumer / Water avens flower opening {Geum rivale} Switzerland.

Jim Brandenburg / Prairie Smoke (Geum triflorum) blowing in the wind, North America

Geoff Simpson / Water avens seedhead and flower {Geum rivale} Peak District NP, Derbyshire, UK

Geoff Simpson / Water avens seedheads {Geum rivale} Derbyshire, UK

Nick Upton / Early bumblebee (Bombus pratorum) nectaring on a Geum flower (Geum coccineum borisii) in a garden, Wiltshire, England, UK, June.

Konrad Wothe / Creeping avens (Geum reptans) Zillertal Alps, Tyrol, Austria. July.

Ernie Janes / Avens (Geum) 'Mrs Bradshaw' flowers growing in garden border, England, UK. May.

Jen Guyton / Prairie smoke / Old man's whiskers flowers (Geum triflorum) San Juan National Forest, Durango, Colorado, USA, May.

Mike Read / Long-plumed purple avens (Geum trifolium) Lamar Valley, Yellowstone National Park, Wyoming USA June

Mike Read / Long-plumed purple avens (Geum trifolium) Lamar Valley, Yellowstone National Park, Wyoming USA June

Mike Read / Water avens (Geum rivale) Cuckoo flower (Cardamine pratensis) and Marsh marigold (Caltha palustris) flowering in water meadow, Ringwood, Hampshire, UK April