126 



Transactions British Mycological Society. 



do not form a clava, while agreeing that the two genera are 

 united by species which, in their different forms, combine the 

 characteristics of both. 



Reference has already been made to the probability that 

 Cordyceps Moelleri P. Henn. and C. cristata Moll, are forms of 

 the same species, parallel to the two forms of Torruhiella 

 ochracea Pat. Lloyd has suggested that Cordyceps Moelleri 

 P. Henn. is identical with C. Sphingum Tul., and that suggestion 

 would appear to be correct. The question then arises whether 

 Torrubiella ochracea is not also identical with Cordyceps Sphin- 

 gum. Macroscopically, the two differ in the shape of the pro- 

 cesses, those of Cordyceps Sphingum tapering upwards and 



Fig. 4. Conidia 



of r. ochracea. 



X 800. 



Fig. 5. Hyphae of T. 

 ochracea. x 1000. 



having the perithecia scattered or clustered at some distance 

 below the apex, so that the clava terminates in a long barren 

 point, while those of Torruhiella ochracea are more or less obtuse 

 and have the perithecia clustered at the apex in the available 

 examples. But it is probable that this difference will prove not 

 to be constant. The other differences are slight. Cordyceps 

 Moelleri is described as pale yellow, while the species of Torru- 

 hiella ochracea which possess clavae have a white stroma, but 

 it is known that the yellow colour of the Torruhiella forms of the 

 latter fades to white. The perithecia of both species appear 

 to be the same shape, while the length of the part-spores is 

 5-6 /Lt in Cordyceps Moelleri, 4/x in C. cristata (both according 

 to Moller), and 5-7/^1 in Torruhiella ochracea. Only Hennings 

 gives the diameter of the spore of Cordyceps Moelleri (0-5//,), and 

 it would appear that he did not see the mature part-spores. 



