Noland, Lowell E. (ed.) / Transactions of the Wisconsin Academy of Sciences, Arts and Letters
volume XXVI (1931)
Breakey, Edith W.; Walker, Ruth I.
Preliminary reports on the flora of Wisconsin. XII, pp. -273 ff. PDF (2.9 MB)
This material may be protected by copyright law (e.g., Title 17, US Code).| For information on re-use, see http://digital.library.wisc.edu/1711.dl/Copyright