REMOVE

1. groves (plant communities)
2. plants
3. silhouettes
4. branches (plant components)
5. bushes

WHAT

1. Visual Works (hierarchy n … (1)
2. artists (visual artists) (1)
3. color film (film) (1)

More 

WHERE

1. Westminster, Maryland (1)

WHEN

1. 1964 (1)
2. ca. 1964 (1)