I don’t know if White Sands National Park is in a desert, per se. As it is, the sands are gypsum, not typical sand you think of in the Gobi or Sahara.
But even here there is plenty growing.
These grasses originally grew at ‘ground level’ but then the winds move the dunes and nothing but the roots of the grasses are holding on to the sand, giving these plants an hourglass shape.
