Flora of Zimbabwe: Species... www.zimbabweflora.co.zw

Asplenium ceterach | Ferns... www.fernsoftheworld.com

Asplenium christii |... laji.fi

Asplenium trichomanes |... www.fernsoftheworld.com

Asplenium trichomanes |... www.fernsoftheworld.com

Spleenworts (Genus... guatemala.inaturalist.org

Asplenium L. www.gbif.org

Asplenium - Wikispecies species.wikimedia.org

Asplenium ukrbin.com

Pyrrosia christii - GLASS... glassboxtropicals.com

Taxonomy Aspleniaceae -... observation.org

Asplenium L. | Plants of... powo.science.kew.org

Asplenium ukrbin.com

Asplenium L. www.gbif.org

Asplenium trichomanes |... www.fernsoftheworld.com

Spleenworts (Genus... guatemala.inaturalist.org

Taxonomy Aspleniaceae -... observation.org

Asplenium L. | Plants of... powo.science.kew.org

Asplenium L. www.gbif.org

World Plants: Plant List www.worldplants.de