This is a photo of Convolvulus.
The latin word 'Volvere' fundamentally signifies the act of causing something to roll or rotate. 
Related Meanings:
From this core meaning, 'volvere' also extends to concepts like:
Involving: 'Involvere' (from 'volvere') means to roll into or envelop. 
Unrolling: 'Evolvere' (also from 'volvere') means to unroll. 
Revolving: 'Revolvere' (from 'volvere') means to roll back, unroll, or return. 
Etymological Connection:
'Volvere' is the root of many English words, including:
Revolve: To turn around. 
Involve: To roll into or entangle. 
Evolution: A gradual development, implying a rolling out or unfolding.