| dbo:abstract |
Ptisana purpurascens is a large fern belonging to the botanical family Marattiaceae. It has a globular rhizome with stipule-like fleshy outgrowths. The leaves are dark green, twice pinnate and up to 1 metre long. Every pinnule has up to six pairs of leaflets. The petioles are dark-purplish, hence the name 'purpurascens' meaning 'becoming purple'. The sporangia are fused in all Ptisana into a bivalvate synangium. Conservation plans have been proposed for Ptisana purpurascens, an endemic of the distant Ascension Island in the South Atlantic, where a single population remains on Green Mountain. While the mature plants are still present in large numbers, long-term threats to its survival exist in the form of competition with alien invasive species like introduced plants such as Buddleja madagascariensis and grazing by sheep and rabbits. Successful reproduction is very rare, making the species highly endangered. (en) Ptisana purpurascens är en kärlväxtart som först beskrevs av De Vriese, och fick sitt nu gällande namn av Murdock. Ptisana purpurascens ingår i släktet Ptisana och familjen Marattiaceae. Inga underarter finns listade i Catalogue of Life. (sv) |
| dbo:thumbnail |
wiki-commons:Special:FilePath/Marattia_purpurascens_JdP.jpg?width=300 |
| dbo:wikiPageExternalLink |
http://journals.cambridge.org/action/displayAbstract;jsessionid=8DBCCE5379982AED17988233915577B1.tomcat1%3FfromPage=online&aid=360019 https://web.archive.org/web/20060713195929/http:/www.arkive.org/species/GES/plants_and_algae/Marattia_purpurascens/ |
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2590 (xsd:nonNegativeInteger) |
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dbr:Endemism dbc:Flora_of_Ascension_Island dbr:Hugo_de_Vries dbr:Rhizome dbr:Petiole_(botany) dbc:Ferns_of_the_Americas dbr:Leaflet_(botany) dbc:Marattiidae dbr:Green_Mountain dbr:Ascension_Island dbc:Near_threatened_plants dbc:Plants_described_in_1853 dbr:Marattiaceae dbr:Sporangia dbr:Buddleja_madagascariensis dbr:Stipule dbr:Synangium dbr:Globular |
| dbp:authority |
Murdock (en) |
| dbp:genus |
Ptisana (en) |
| dbp:species |
purpurascens (en) |
| dbp:status |
CR (en) |
| dbp:statusSystem |
IUCN3.1 (en) |
| dbp:wikiPageUsesTemplate |
dbt:More_footnotes_needed dbt:Reflist dbt:Short_description dbt:Speciesbox dbt:Taxonbar dbt:Use_dmy_dates dbt:Ascension-stub dbt:Fern-stub |
| dct:subject |
dbc:Flora_of_Ascension_Island dbc:Ferns_of_the_Americas dbc:Marattiidae dbc:Near_threatened_plants dbc:Plants_described_in_1853 |
| gold:hypernym |
dbr:Fern |
| rdf:type |
yago:WikicatNearThreatenedPlants yago:LivingThing100004258 yago:Object100002684 yago:Organism100004475 yago:PhysicalEntity100001930 yago:Plant100017222 dbo:Fern yago:Whole100003553 |
| rdfs:comment |
Ptisana purpurascens är en kärlväxtart som först beskrevs av De Vriese, och fick sitt nu gällande namn av Murdock. Ptisana purpurascens ingår i släktet Ptisana och familjen Marattiaceae. Inga underarter finns listade i Catalogue of Life. (sv) Ptisana purpurascens is a large fern belonging to the botanical family Marattiaceae. It has a globular rhizome with stipule-like fleshy outgrowths. The leaves are dark green, twice pinnate and up to 1 metre long. Every pinnule has up to six pairs of leaflets. The petioles are dark-purplish, hence the name 'purpurascens' meaning 'becoming purple'. The sporangia are fused in all Ptisana into a bivalvate synangium. (en) |
| rdfs:label |
Ptisana purpurascens (en) Ptisana purpurascens (sv) |
| owl:sameAs |
freebase:Ptisana purpurascens wikidata:Ptisana purpurascens http://ceb.dbpedia.org/resource/Ptisana_purpurascens dbpedia-hr:Ptisana purpurascens dbpedia-sv:Ptisana purpurascens dbpedia-vi:Ptisana purpurascens dbpedia-war:Ptisana purpurascens https://global.dbpedia.org/id/4jpCW yago-res:Ptisana purpurascens |
| prov:wasDerivedFrom |
wikipedia-en:Ptisana_purpurascens?oldid=1084204195&ns=0 |
| foaf:depiction |
wiki-commons:Special:FilePath/Marattia_purpurascens_JdP.jpg |
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wikipedia-en:Ptisana_purpurascens |
| is dbo:wikiPageRedirects of |
dbr:Marattia_purpurascens |
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dbr:List_of_critically_endangered_plants dbr:Ptisana dbr:Danaea_kalevala dbr:List_of_Jamaican_Patois_words_of_African_origin dbr:Marattia_purpurascens |
| is foaf:primaryTopic of |
wikipedia-en:Ptisana_purpurascens |
