She billey [[yn-lhoamey]] 'sy [[genus|ghenus]] ''[[Betula]]'' ehee '''beih argid''' ('''''Betula pendula'''''). T'ehee dooghyssagh da'n [[yn Europey|Europey]], chammah's sleityn [[yn Turkee|ny Turkee]] hwoaie. Ta kuse dy lus-oayllee gra dy vel ''[[Betula platyphylla]]'' (yn Aishey hwoaie) as ''[[Betula szechuanica]]'' (yn Aishey veanagh) sorçhyn dy veih argid myrgeddin, myr ''B. pendula'' sorarr. ''platyphylla'' as ''B. pendula'' sorarr. ''szechuanica''.<ref>[http://rbg-web2.rbge.org.uk/cgi-bin/nph-readbtree.pl/feout?FAMILY_XREF=&GENUS_XREF=Betula&SPECIES_XREF=pendula&TAXON_NAME_XREF=&RANK= Flora Europaea: ''Betula pendula'']</ref><ref>Hunt, D., ed. (1993). Betula. Proceedings of the IDS Betula Symposium 2–4 October 1992. International Dendrology Society ISBN 0-9504544-5-1.</ref><ref name=rushforth>Rushforth, K. (1999). ''Trees of Britain and Europe''. HarperCollins ISBN 0-00-220013-9.</ref>
==Jalloo-oaylleeaght==
Ta beih argid gaase wheesh as 15-25m er yrjid, agh ta'n corp echeyeck keyl, ny sloo na 40km son y chooid smoo. Ta [[roost]] bane echeyeck, as cowraghyn dooey er dy mennick, faggys da'n vun erskyn ooilley. Ta stholeyn garroo echeyeck. Ta ny eck duillagyn 3-7km er lhiurid, [[cummey duillag#trooraneagh|trooraneagh]], as ta [[cummey duillag#daa-eeacklagh|oirr daa-eeacklagh]] oc. She [[clooie ny gayt|clooieyn ny gayt]] ad ny blaaghyn, as t'ad goll er pollnaghey liorish y gheay. Ta [[rass|rassyn]] beggey skianagh echeyeck.<ref name=tfl>[http://www.treesforlife.org.uk/tfl.birch.html Trees for Life Species Profile: Birch]</ref><ref name=rushforth/>
==Eggoaylleeaght==
T'ehee ry-akin er thalloo geinee, çhirrym son y chooid smoo. T'ehee gaase myrane lesh y fungys [[mycorrhisagh]] ''[[Amanita muscaria]]'' dy cadjin, er thalloo boght er lheh. Ny keayrtyn, ta ''[[Leccinum scabrum]]'' ny ''[[Cantharellus cibarius]]'' leshmyrane lhee. Dy mennick, ta [[skeaban buitçh (lus-oaylleeaght)|skeaban buitçh]] echeyeck myr eiyrtys ''[[Taphrina|Taphrina betulina]]''.<ref name=tfl/>
