Here is the girl's head like an exhumed gourd.
Oval-faced, prune-skinned, prune-stones for teeth.
They unswaddled the wet fern of her hair
And made an exhibition of its coil,
Let the air at her leathery beauty.
The concise,  asyndetic list  creates a vivid image, with compound adjectives and a compound noun to describe the preserved head. The wrinkled, prune-like characteristic is gruesome. The fruit  metaphor  relating the find to the  Billie Holliday song  and the execution of slaves in America begin to make sense.
Strange Fruit