{"id":"https://openalex.org/W76161536","doi":null,"title":"Taxonomic evaluation of the fern genus Pteridium and its active evolutionary state.","display_name":"Taxonomic evaluation of the fern genus Pteridium and its active evolutionary state.","publication_year":1990,"publication_date":"1990-01-01","ids":{"openalex":"https://openalex.org/W76161536","mag":"76161536"},"language":"en","primary_location":{"id":"mag:76161536","doi":null,"is_oa":false,"landing_page_url":"https://www.cabdirect.org/abstracts/19912312774.html","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5111949726","display_name":"C. N. Page","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"C. N. Page","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5111949726"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.2221,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.76321749,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":"40","first_page":"23","last_page":"34"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12359","display_name":"Fern and Epiphyte Biology","score":0.9901999831199646,"subfield":{"id":"https://openalex.org/subfields/1105","display_name":"Ecology, Evolution, Behavior and Systematics"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T12359","display_name":"Fern and Epiphyte Biology","score":0.9901999831199646,"subfield":{"id":"https://openalex.org/subfields/1105","display_name":"Ecology, Evolution, Behavior and Systematics"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10385","display_name":"Plant Diversity and Evolution","score":0.009399999864399433,"subfield":{"id":"https://openalex.org/subfields/1105","display_name":"Ecology, Evolution, Behavior and Systematics"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12568","display_name":"Plant Taxonomy and Phylogenetics","score":0.00019999999494757503,"subfield":{"id":"https://openalex.org/subfields/1105","display_name":"Ecology, Evolution, Behavior and Systematics"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/pteridium","display_name":"Pteridium","score":1.0},{"id":"https://openalex.org/keywords/ferns","display_name":"ferns","score":0.7419999837875366},{"id":"https://openalex.org/keywords/taxonomic-reassessment","display_name":"taxonomic reassessment","score":0.7009999752044678},{"id":"https://openalex.org/keywords/evolutionary-state","display_name":"evolutionary state","score":0.6190000176429749},{"id":"https://openalex.org/keywords/pteridium-aquilinum","display_name":"Pteridium aquilinum","score":0.9649999737739563},{"id":"https://openalex.org/keywords/pteridium-esculentum","display_name":"Pteridium esculentum","score":0.9319999814033508},{"id":"https://openalex.org/keywords/p","display_name":"P","score":0.9829999804496765}],"concepts":[{"id":"https://openalex.org/C2776985847","wikidata":"https://www.wikidata.org/wiki/Q80005","display_name":"Fern","level":2,"score":0.819969654083252},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.5441073775291443},{"id":"https://openalex.org/C2779413664","wikidata":"https://www.wikidata.org/wiki/Q213548","display_name":"Pteridium aquilinum","level":3,"score":0.5034074187278748},{"id":"https://openalex.org/C58642233","wikidata":"https://www.wikidata.org/wiki/Q8269924","display_name":"Taxonomy (biology)","level":2,"score":0.4632471799850464},{"id":"https://openalex.org/C157369684","wikidata":"https://www.wikidata.org/wiki/Q34740","display_name":"Genus","level":2,"score":0.4607710540294647},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.45130667090415955},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.3421880304813385}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:76161536","doi":null,"is_oa":false,"landing_page_url":"https://www.cabdirect.org/abstracts/19912312774.html","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4232975398","https://openalex.org/W6903909542","https://openalex.org/W355907665","https://openalex.org/W3147828222","https://openalex.org/W816748200","https://openalex.org/W7035781468","https://openalex.org/W6885085316","https://openalex.org/W7222915395","https://openalex.org/W6893499945","https://openalex.org/W2613957753"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-10-01T08:54:57.152042","created_date":"2016-06-24T00:00:00"}
