Annals 
of the 
Missouri Botanical Garden 
Vol. 11 APRIL-SEPTEMBER, 1924 No. 2-3 
A MONOGRAPH OF THE GENUS MIMULUS!:* 
ADELE LEWIS GRANT 
Instructor in Botany, Cornell University 
Formerly Teaching Fellow in the Henry Shaw School of Botany of 
Washington University 
INTRODUCTION 
An attempt to determine specimens of the genus Mimulus 
found growing in California revealed the fact that serious dif- 
ficulties were to be encountered because of the scattered literature, 
the close relationship existing between many of the species, and 
the extreme polymorphism of others. In view of this, the writer 
decided to undertake a critical examination of the group. At 
first a study of only those species growing in California was con- 
. templated, but as the work progressed and the various segregates 
were considered it was deemed best to make a revision of the 
entire genus. 
This investigation was continued through a period of six years. 
During this time various herbaria were visited where type col- 
lections and numerous specimens were carefully studied. In 
addition to the large number of specimens available for critical 
examination at the Missouri Botanical Garden, where the major 
part of this work was done, material was borrowed extensively 
from many herbaria. For the privilege of studying these col- 
Any. Mo. Bor. Ganp., Vor. 11, 1924 ы (99) 
