Protomyces. 301 
Synonym. 
Protomyces pachydermus. Thiim., “ Hedwigia,” 1874, p. 97. 
Trail, Scott. Nat., July, 1883, p. 33. 
On Zaraxacum officinale. Aberdeen, Prof. J. W. H. Trail. 
Protomyces menyanthis. De Bary. 
Spores aggregated in roundish or confluent patches, immersed 
in the substance of the leaves, purplish on the surface. 
Spores brownish, subglobose. 
Synonym. 
Protomyces menyanthis, De Bary. Cooke, “Micro, Fungi,” 
4th edit., p. 228. 
LExsiccats. 
Vize , “ Micro. Fungi,” 151. 
On the leaves of Menyanthes trifoliata and Comarum palustre. 
BIOLOGY.—This species Professor Trail finds commonly in Aber- 
deenshire, on Menyanthes, but not upon Comarum. 
Protomyces ari. Cooke. 
Spots aggregated in elongated patches, immersed in the substance 
of the leaves and petioles, always covered, globose, simple, 
brown. Endochrome granular. Epispore smooth. 
Synonym. 
Protomyces art, Cooke, “ Micro, Fungi,” 4th edit., p. 227. 
On the leaves and petioles of Arum maculatum. 
