Gi> Ejsi'OKX of ihe Botanist. 



EXPLANATION OF PLATES. 



Plate 1Y. — A sprayed plant of Antirrhinum majiis, representing 

 the condition^ on August 13, of the sprayed row in the 

 experiment described on page SJf.. A little more than one- 

 third natural size. 

 Plate Y. — An unsprayed plant o/" Antirrhinum majiis, represent- 

 ing the condition^ on August 13, of the check row in the 

 experiment described on page 6J(.. A little more than one 

 third natural size. 



The plants shovm in Plates IV a/td V were not growyi 

 in the pots, but were put into them for convenience in 

 photographing, 

 Plate YL Fig. 1. — Portion of a stem and two leaves of Antirr- 

 hinum majus attacked by Colletotrichum antirrliini. Ifat- 

 ural size. 

 Fig. 2. — A section of an acervulus of C. antirrhini from a 



s*em spot. Drawn loith the aid of a camera-lucida. 

 Fig. 8. — Pive spores of C. antirrhini. Magnification, 78G 



diameters. 

 Fig. 4. — A seta of C. antirrliini. 



Type specimens of Colletotrichum antirrhini have been 

 deposited in the following herbaria : Herbarium of Cor- 

 * nell University, Ithaca, N. Y. ; herbarium of the New 

 York State Museum, Albany, iV. Y. ; herbarium, of the 

 Ntw York AgricuUaral Experiment Station, Geneva, 

 iY Y. ; and the herbarium of the Iowa State College, Ames, 

 Iowa. 



