what I said of <name xmlns="http://www.tei-c.org/ns/1.0" type="plant">Hypnum</name> applies also here: scarcely <lb xmlns="http://www.tei-c.org/ns/1.0" />two people have agreed what are to be considered species. <lb xmlns="http://www.tei-c.org/ns/1.0" />But among those found every where <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>P.</abbr> <expan>Polytrichum</expan> </choice> commune</name> holds <lb xmlns="http://www.tei-c.org/ns/1.0" />the first rank: From the North to the South arctic circles <lb xmlns="http://www.tei-c.org/ns/1.0" /><add xmlns="http://www.tei-c.org/ns/1.0" place="superlinear">there is</add> scarcely a country <gap xmlns="http://www.tei-c.org/ns/1.0" unit="words" quantity="1" reason="illegible" />but posesses it. <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>P.</abbr> <expan>Polytrichum</expan> </choice> juniferinum</name> is <lb xmlns="http://www.tei-c.org/ns/1.0" />also nearly as common although few species at present <lb xmlns="http://www.tei-c.org/ns/1.0" />lie <add xmlns="http://www.tei-c.org/ns/1.0" place="superlinear"><del rendition="#s">yet</del> hithertho </add>known in the <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0010383">Southern hemisphere</placeName>, still I suspect <lb xmlns="http://www.tei-c.org/ns/1.0" /><subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#ow">they</del> <add place="intralinear">them</add> </subst> abound as much as in the <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0001702">Northern</placeName>. A few species <lb xmlns="http://www.tei-c.org/ns/1.0" />as <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>P.</abbr> <expan>Polytrichum</expan> </choice> convolutum</name> & its allies grow in the tropics.