STUDIES IN SAXIFRAGACEAE: III. SAXIFRAGA ODONTOLOMA AND LYALLII, AND NORTH AMERICAN SUBSPECIES OF S. PUNCTATA

摘要

The taxonomy and phytogeography ofSaxifraga odonloloma(S. argulaauct.),S. lyallii, andS. punctataare presented.S. odonlolomais not closely related toS. punctatabut is much more closely allied toS. lyalliiwith which it hybridizes.S. lyalliiis divided into two varieties, var.lyalliinear the 49th parallel, and var.hulteniivar. nov. from Alaska to southern B.C.S. punctatais divided into six subspecies in North America: sspp.nelsoniana(D. Don) Hult.,insularisHult.,pacificaHult.,carlottaessp. nov.,cascadensisssp. nov., andporsildianassp. nov.