@book {16, title = {Flora of Alaska and Yukon. I. Pteridophyta, Gymnospermae and Monocotyledoneae (Pandanales and Helobiae)}, series = {Lunds Universitets {\r A}rsskrift}, volume = {37}, number = {1}, year = {1941}, pages = {563}, publisher = {C.W.K. Gleerup}, organization = {C.W.K. Gleerup}, address = {Lund}, author = {Hult{\'e}n, E.} }