There are usually considered to be two <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0005696 https://www.geonames.org/6255148">European</placeName> species of <lb xmlns="http://www.tei-c.org/ns/1.0" />this genus, one of them has been found in the <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0009136 https://www.geonames.org/6252001">united States</placeName>. <lb xmlns="http://www.tei-c.org/ns/1.0" /><persName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0015729 http://d-nb.info/gnd/117334081">Schwaegrichen</persName> <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">says there</del> <add place="intralinear">describes</add> </subst> another species from <lb xmlns="http://www.tei-c.org/ns/1.0" />Arctic America, I am not acquainted with it, but I think <lb xmlns="http://www.tei-c.org/ns/1.0" />the other two only <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">the same</del> <add place="superlinear">one</add> </subst> species.