116 Mortier F. Barrus 



Hark, as synonyms of Gloeosporium (Colletotrichum) Lindemuthianum 



Sacc. & Magn. An examination of type specimens of these two fungi 



in the possession of Dr. C. L. Shear, of the United States Department 



of Agriculture, leads to the conclusion that they are not at all related to 



the fungus here considered. 



The synonymy would, then, appear as follows: 



Gloeosporium Lindemuthianum Sacc. & Magn. Miehelia 1 : 129. 1878. 



Septoria leguminum Desm. In Von Thumen, Mycotheca universalis, no. 2096. 1882. 



Septoria Leguminum Desm. var. Phaseolarum. In Roumeguere, Fungi gallici exsiccati, no. 



2791. 1884. 

 Colletotrichum lindemuthianum (Sacc. & Magn.) Bri. & Cav. I funghi parassiti delle piante 



coltivate od utili, no. 50. 1889. 

 Colletotrichum lindemuthianum (Sacc. & Magn.) Scribner. Orchard and garden 1 1 : 193-194. 



1889. 

 ? Gloeosporium phaseoli Ch. Rich. Cat. raison. champ. Depart. Marne, p. 401. 1889. 

 Colletotrichum lagernarium (Pass.) Ellis & Halsted. Bui. Torrey Bot. Club 20:246-250. 



1893. 

 Gloeosporium Lindemuthianum Sacc. & Magn. forma foliicolum Allesch. In Allescher and 



Scbnabl, Fungi bavarici exsiccati, no. 380. 1894. 

 Colletotrichum Lindemuthianum (Sacc. et Magn.) Cavara f. brachysporum. Mycotheca italici, 



no. 1364. 1904. 

 Glomerella lindemuthianum Shear n. comb. In Kriiger, K. biol. Anst. Land- u. Forstw., 



Arb. 9:311. 1913. 



Morphology and physiology 



Spores 



Whether the fungus is grown on its host or in culture media, the 

 spores are produced abundantly on the surface in acervuli masses of 

 a grenadine pink color. Frank (1883 b: 513) mentions the presence of 

 a slimy substance with the spores in the acervulus, and this has since 

 been noted by other workers as a gelatinous substance in which the spores 

 are embedded. If such a mass of spores is placed in water, they separate 

 and become suspended in the water so that they are readily disseminated 

 by its dispersal. If the acervulus remains dry, it hardens and shrinks 

 down to small gray or brown granulations, and the spores are seldom 

 set free under such circumstances. 



The summer spores (conidia) are oval or oblong, cylindrical, one-celled 

 bodies of somewhat variable size (Plate III, 1). They are straight 

 or slightly curved, with the ends rounded or at one end somewhat pointed. 

 The dimensions, as averaged from a large number of spore measurements, 

 are 15 by 5 /*• The largest spore encountered measured 22 by 5.33 n 

 and the smallest 13 by 4.44 /x. The content of young spores is homo- 



