JULY, 1902. .TOIINSOX NOTE OX A BILATEUAL TULIP. 
175 
The previous case is that described by A. Pippow in ''Ueber 
das Auftreten scheinbarer Zygomorphie bei regelmaessigen Blue- 
then," in ''Sitzungsberichte d. Bot. Ver. d. Prov. Brandenburg 
1877, p. 74." I have been unable to see the original article. It is 
referred to in Penzig's "Pflanzen-Teratologie" as follows : ''Durch 
symmetrisch vertheilte Einschnitte in den Perianthblaettern war- 
den die Bluethen gelegentlich pseudo-zygomorph." — University 
of Wisconsin, March i, 1902. 
