Question: Which plant was classified as a Eucalyptus until the mid 90s, the Physocarpus or Corymbia?
Sentence (from "Corymbia"): All three genera—"Angophora", "Corymbia" and "Eucalyptus"—are closely related, often difficult to tell apart, and are still commonly and correctly referred to as "eucalypts".
Relevant evidence: No