query: PREFIX wikibase: <http://wikiba.se/ontology#>
  PREFIX wd: <http://www.wikidata.org/entity/> 
  PREFIX wdt: <http://www.wikidata.org/prop/direct/>
  PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
  PREFIX p: <http://www.wikidata.org/prop/>
  PREFIX q: <http://www.wikidata.org/prop/qualifier/>
  PREFIX v: <http://www.wikidata.org/prop/statement/>
  PREFIX pr: <http://www.wikidata.org/prop/reference/>
  
  PREFIX prov: <http://www.w3.org/ns/prov#> SELECT DISTINCT ?item ?acceptedTaxonName ?synonymName   WHERE {
     ?item wdt:P225 ?acceptedTaxonName .
     #?item wdt:P225 "Oreocereus hempelianus" . # only this species
     #?item wdt:P105 wd:Q7432 . # species
     ?item (wdt:P171)* wd:Q14560 . # Cactaceae
     ?item wdt:P1420/wdt:P225 ?synonymName .
     ?synonymNameV v:P1420 ?synonymNameValue .
     ?synonymNameV prov:wasDerivedFrom ?ref .
     ?ref pr:P248 wd:Q13520496 .   # Das große Kakteen-Lexikon 
     #?ref pr:P248 wd:Q10695694 . # New Cactus Lexicon
  }
  ORDER BY ASC(?acceptedTaxonName)