WordNet records no synonym and no antonym for oligoporus leucospongia. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a pore fungus with a whitish cottony soft cap found on conifer logs in forests at high elevation in the western United States and adjacent Canada
Synonyms, antonyms and the broader and narrower relations for oligoporus leucospongia come from Princeton University’s WordNet. Full sources and licences.