Isoetes echinospora

[4] It can be found in shallow aquatic environments from Labrador and Newfoundland to Alaska, and south to Pennsylvania, Wisconsin, Michigan, Colorado, and California.In Germany it is found in only two locations: the Feldsee and Lake Titisee, both in the High Black Forest.Round white megaspores are about 480 micrometres (0.019 in) in diameter and are covered with spines.Kidney-shaped microspores are about 26 micrometres (0.0010 in) long with smooth, fine spines.braunii refer to the North American plants, but are often considered synonyms of Europe's I.
Scientific classificationPlantaeTracheophytesLycophytesLycopodiopsidaIsoetalesIsoetaceaeIsoetesBinomial nameSynonymsquillwortFeldseeTitiseeBlack ForestsporangiummegasporesmicrosporesWikidataWikispeciesiNaturalistNatureServeObservation.orgOpen Tree of LifePlant ListTropicoslycophyte