Of this genus, containing about <add xmlns="http://www.tei-c.org/ns/1.0" place="superlinear">27 or </add>28 species, nearly 20 are <lb xmlns="http://www.tei-c.org/ns/1.0" />confined to <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0005696 https://www.geonames.org/6255148">Europe</placeName>, scarcely more than <hi xmlns="http://www.tei-c.org/ns/1.0" rendition="#u">two</hi> to <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0001698 https://www.geonames.org/7729890">North america</placeName> <lb xmlns="http://www.tei-c.org/ns/1.0" />(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>), one, <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> apocarpa</name> with its varieties <add xmlns="http://www.tei-c.org/ns/1.0" place="superlinear">& perhaps <name type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> maritima</name></add> seems <lb xmlns="http://www.tei-c.org/ns/1.0" />common to both. <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> fontinaloides</name>, <add xmlns="http://www.tei-c.org/ns/1.0" place="superlinear"><name type="plant"><supplied cert="high">Grimmia</supplied> longisotris</name>, and <name type="plant"><supplied cert="high">Grimmia</supplied> fuscolutea</name>, </add>belong<del xmlns="http://www.tei-c.org/ns/1.0" rendition="#s">s</del> to <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0010380 https://www.geonames.org/6255150"><choice> <abbr>S.</abbr> <expan>South</expan> </choice> america</placeName>; <lb xmlns="http://www.tei-c.org/ns/1.0" />and <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> campestris</name> to the <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0000355 https://www.geonames.org/3367577">Cape of Good hope</placeName>: The <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0005696 https://www.geonames.org/6255148">European</placeName> species <lb xmlns="http://www.tei-c.org/ns/1.0" />are principally alpine, but some <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">are found</del> <add place="intralinear">as <name type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> maritima</name></add> </subst> are <lb xmlns="http://www.tei-c.org/ns/1.0" />found at the level of the sea, others as <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> apacarpa</name> occur in all <lb xmlns="http://www.tei-c.org/ns/1.0" />situations, <add xmlns="http://www.tei-c.org/ns/1.0" place="superlinear">which</add> from the slight variations that in consequence <choice xmlns="http://www.tei-c.org/ns/1.0"> <sic>takes</sic> <corr cert="high">take</corr> </choice> <lb xmlns="http://www.tei-c.org/ns/1.0" />place on the appearance of the plant, has received six or eight <lb xmlns="http://www.tei-c.org/ns/1.0" />different names. It is singular that <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> pulvinata</name>, β. <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><supplied cert="high">Grimmia</supplied> africana</name>, brought <lb xmlns="http://www.tei-c.org/ns/1.0" />by <persName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0003962 http://d-nb.info/gnd/119036495">Thunberg</persName> from the <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0000355 https://www.geonames.org/3367577">Cape of Good hope</placeName>, & which perhaps with <lb xmlns="http://www.tei-c.org/ns/1.0" />justice should be held as a distinct species, or <subst xmlns="http://www.tei-c.org/ns/1.0"> <del rendition="#s">perhaps the</del> <add place="intralinear">more <lb />probably</add> </subst> the same with <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> fuscolutea</name> from <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0010380 https://www.geonames.org/6255150"><add place="superlinear"><choice> <abbr>S.</abbr> <expan>South</expan> </choice></add> America</placeName>, has been <lb xmlns="http://www.tei-c.org/ns/1.0" />said to have been found in <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0010179 https://www.geonames.org/2658434">Swisserland</placeName>. As however I have <lb xmlns="http://www.tei-c.org/ns/1.0" />not yet seen either, I cannot give my opinion decidedly. <lb xmlns="http://www.tei-c.org/ns/1.0" />Of the <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0010380 https://www.geonames.org/6255150">South american</placeName> ones <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> fontinaloides</name> is analogous to our <lb xmlns="http://www.tei-c.org/ns/1.0" /><placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0005696 https://www.geonames.org/6255148">European</placeName> <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> apocarpa <choice> <abbr>var.</abbr> <expan>varietas</expan> </choice> rivularis</name> – <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> longirostris</name> to the <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0005696 https://www.geonames.org/6255148">European</placeName> <lb xmlns="http://www.tei-c.org/ns/1.0" /><choice xmlns="http://www.tei-c.org/ns/1.0"> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> ovata – and lastly <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> fuscolutea</name> to the <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> pulvinata</name>. Of the <lb xmlns="http://www.tei-c.org/ns/1.0" /><placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0010379 https://www.geonames.org/9406051">South african</placeName> species, <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> campestris</name> resembles <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> leucophaea</name> so <lb xmlns="http://www.tei-c.org/ns/1.0" />closely as with difficulty to be separated, and <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> africana</name>, supposing <lb xmlns="http://www.tei-c.org/ns/1.0" />it distinct, is very closely allied to <name xmlns="http://www.tei-c.org/ns/1.0" type="plant"><choice> <abbr>G.</abbr> <expan>Grimmia</expan> </choice> pulvinata</name>. Thus an <lb xmlns="http://www.tei-c.org/ns/1.0" />opinion that there are only three species of this genus would gain <lb xmlns="http://www.tei-c.org/ns/1.0" />some confirmation, & that these species were distributed all over <lb xmlns="http://www.tei-c.org/ns/1.0" />the globe: the three species would be 1. with immersed setae, 2. with <lb xmlns="http://www.tei-c.org/ns/1.0" />exserted straight setae, & 3. with excerted incurved setae.