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species. In general it was preferred rather to name a possibly good species 

 as a variety than to raise a mere variety to specific rank. 



Fig. 1. — Types of conidia of the species of Fusarium and Fusarium-like fungi found on 

 potatoes, a, Ramularia Solani; b, R. eudidyma; c, R. Magnusiana; d, Fusarium affine; e, F. 

 dimerum; f, F. cuneiforme; g, F . udum var Solani; h, i, j, F. ferruginosurn; k, F. sanguineum 

 var. pallidium; l, m, n, o, p, F. arthrosporioides ; q, F. sporotrichioides; r, s, F. arthrosporioides 

 var. asporotrichius; t, F. anguioides: v, F. biforme; v, F. lucidum; w, F. subulatum; x, F. fal- 

 catum; y, F. gibbosum; z, F. caudatum var. Solani; Ai, F. bullatum; Bi, F. arcuosporum; Ci, 

 Di, Ei, F. truncatum; Fi, F. lutulatum; Gi, Hi, F. anguslum; ii, Ji, Ki, F. orthoceras; u, F. oxysporum 

 var. resupinatum; Mi, F. oxysporum var. longius; Ni, F. oxysporum; Oi, F. sclerotioides; Pi, 

 F. redolens var. Solani; Qi, F. discolor; Ri, F. clavatum; Si, Ti, F. subpallidum var. roseum; Ui, 

 Vi, F. trichothecioides; Wi, F. discolor var. triseptatum; Xi, Ti, F. Solani; zi, a 2 , F. Martii; B2, 

 F. coeruleum; C2, F. striatum; D2, F. culmorum var. leteius. Magnification WOO times 



