Phytogeographic survey of North America : a consideration of the phytogeography of the North...

by Harshberger, John W.
Published 1911

A survey of the phytogeography of the arctic American archipelago : with some notes about its exploration /

by Simmons, Herman Georg, 1866-1943
Published 1913

The flora of Disko Island and the adjacent coast of West Greenland from 66-71 n. lat. : with remarks on phytogeography, ecology, flowering, fructification and hibernation.

by Porsild, Morten P.
Published 1920