As they crossed into the sparse clusters of brush, Ali automatically lost altitude and slowed pace, giving them a chance for a searching examination of what lay below.

It was past the last sparse clusters, to where straggling points of light gleamed lonely.

For example, a point at a "small" distance to a very dense cluster is an outlier, while a point within a sparse cluster might exhibit similar distances to its neighbors.

The Apache grazed ,',over their'heads while they hid under sparse clusters of trees to avoid detection during the dogfight-a precaution Khalela had insisted on taking.

Sheep Meadow was dotted with sparse clusters of people, which only seemed to highlight the vastness of the green expanse.

It produces an erect inflorescence up to about 23 centimeters tall with sparse clusters of pinkish, yellow, or cream flowers.

Today, the crowd packed the area directly in front of the Lincoln Memorial, but the grassy expanse along each side of the Reflecting Pool held only sparse clusters of onlookers.

E. perulatus is shorter, up to 6ft tall, and has an upright habit, urn-shaped, white flowers in sparse clusters, and particularly brilliant autumn colours of red, orange and purple.

NGC 3114 is a sparse open cluster which is projected on to the outskirts of the Carina complex.

Open clusters range from very sparse clusters with only a few members to large agglomerations containing thousands of stars.