A SYNOPSIS OF THE SPECIES OF ARCTIUM IN NORTH AMERICA
Fernald, Merritt Lyndon, 1873-1950 Wiegand, K. M. (Karl McKay), 1873-1942
Article
1910
Rhodora
12
43--47
BioStor
[Cambridge, Mass., etc.] New England Botanical Club [etc.]
BioStor: https://biostor.org/reference/179042