Fig. 2. Variability curves for Anthemis cotula, for different^ 
Fig. 1. Anthemis cotula, at Bellingham, Wash. localities. 
Plate XVIII. 
^ P/atiT 
5 
::3- 
^ On 
3 
^ hi 
O-):' 
c ^ 
5 ^ 
- 
'vl 
- 
- 
-k 
INo 
'k 
-k 
hi 
hi 
V 
-k 
eN 
03 
Cu 
-k 
ho 
-k 
ho 
f\0 
Co 
V 
V 
ho 
■v 
ho 
<k 
^ ^ ^ VI- -k GS k> ^ ^ 
Total no. heads on each Inlanf. 
: 2 
5 
