query: SELECT DISTINCT ?item ?taxonName ?basionymOf WHERE {
    ?item wdt:P2868 wd:Q810198 .  # basionym
    ?item wdt:P225 ?taxonName .
    ?item p:P2868 ?taxonNameStatement .
    ?taxonNameStatement pq:P642/wdt:P225 ?basionymOf
  }
  ORDER BY ASC(?taxonName) ASC(?basionymOf)