A big bubbly shape, such as foam, a cloud or a bush.  

Foam Or Bush

A shape of a puffy flat-bottomed cloud or bush.

Bush Shape

An ornamental cloud-shaped, flat-bottomed bush with a circular flower on it.

A cloud-shaped, flat-bottomed bush with a curved shadow on it. 

A puffy, flat-bottomed shape or silhouette of bushes or a cloud.

A cloud-shaped, flat-bottomed bush with a curved shadow on it.

A cloud-shaped, flat-bottomed bush with a curved shadow on it next to a dome-shaped bush, rock or pebble.