From Natural History of Southeast Alaska
Is reference for
|
Betula nana +
|
Is web link
|
true +
|
Linktext
|
page for [species name] +
|
Reference comment
|
"The range of Betula nana subsp. exilis st … "The range of Betula nana subsp. exilis stretches through Siberia and across northwestern North America. It is sometimes confused with Betula glandulosa Michaux; it can be distinguished from that species by its usually much smaller, rounded to truncate-tipped leaves that have teeth all the way to the base (the base being mostly toothless in B . glandulosa ). Betula nana subsp. exilis has been combined into B . glandulosa by several authors (E. H. Moss and J. G. Packer 1983; A. E. Porsild and W. J. Cody 1980). The two taxa hybridize and form a sometimes bewildering assortment of intermediates in the extensive region where their ranges overlap; they constitute well-defined entities away from the area of contact. " entities away from the area of contact. " +
|
Weblink
|
http%3A%2F%2Fwww.efloras.org%2Fflorataxon.aspx%3Fflora_id%3D1%26taxon_id%3D233500254 +
|
Website
|
FNA +
|