Not clean.

(taxonomy) A collection of organisms that is given formal recognition at the rank of genus with a taxonomic name, but which is known to be an artificial group rather than a natural one.

(vulgar, idiomatic) An exclamation of great surprise. / (vulgar, idiomatic) An exclamation of anger. / (vulgar, idiomatic) An exclamation of bewilderment.

Holodiscus discolor, a North American shrub.