What crescent-shaped dunes sometimes form where vegetation anchors the sand?

Question

Quizplus · Accepted Answer

Parabolic dunes are crescent-shaped dunes that form where vegetation anchors the sand. Barchan dunes are crescent-shaped dunes that form where winds blow in one direction, transverse dunes are long ridges of sand that form perpendicular to the wind direction, and longitudinal dunes are long ridges of sand that form parallel to the wind direction.

What Crescent-Shaped Dunes Sometimes Form Where Vegetation Anchors the Sand