Zare, GolshanKeskin, MustafaDogru-Koca, AsliArmagan, Metin2025-05-102025-05-1020161179-31551179-316310.11646/phytotaxa.269.4.52-s2.0-84983037027https://doi.org/10.11646/phytotaxa.269.4.5https://hdl.handle.net/20.500.14720/15355Keskin, Mustafa/0000-0003-2454-1891; Armagan, Metin/0000-0002-3913-954XA previously undescribed species, Isoetes vanensis, is described and illustrated. Isoetes vanensis is distinguished from allied species by its papery scales and small megaspores bearing a low tuberculate texture and a fimbriate-ecuelate micro-ornamentation. A table of comparative diagnostic characters and character states for I. vanensis and allied taxa, a geographic distribution map, and SEM images of megaspores and microspores showing ornamentation patterns are included.eninfo:eu-repo/semantics/closedAccessNew SpeciesIsoetesIsoetaceaeTurkeyArticle2694Q4Q3294300WOS:000382031400005