Fusaria of Potatoes 251 



56. Fusarium Solani (Mart. p. par.) Ap. et Wr. (Fig. 1, Xi and Yij 

 Fig. 45, a to g; PL I, fig. 1 ; PI. vi, fig. 7) 



Appel, 0., and Wollenweber, H. W., Arb. K. biol. Anst. Land- u. 

 Forstw. 8:64-78; PI. i, figs. 1 to 30; Pl.'in, fig. 1; text fig. 4. 1910. 



Microconidia always present, at least on aerial mycelium, same size and 

 shape as those of F. Martii. Macroconidia typically somewhat broader 



Fig. 45.— a-g, Fusarium Solani. a, Conidia from plectenchymic sporodochia from 66-days- 

 old culture on potato tuber plugs; b, conidiophores, c, conidia, from aerial mycelium from 12- 

 days-old culture on hard lima-bean agar; d, pseudopionnotal conidia from 1 1 -days-old culture 

 on slightly acidified hard potato agar; e, conidia from sporodochium from 87-days-old culture 

 on red raspberry cane plug; f, terminal, 1- to 3-septale, chlamydospores produced by hypha? and 

 conidia, the latter anastomosed, from 173-days-old culture on corn agar; g, terminal and inter- 

 calary, clustered, chlamydospores from 70-days-old culture on potato tuber plug 



h-j, Fusarium Solani var. cyanum. h, Sporodochial conidia from 87-days-old culture on 

 red raspberry cane plug; i, pseudopionnotal conidia from 15-days-old culture on slightly acidified 

 hard potato agar; j, aerial conidia from 87-days-old culture on red raspberry cane plug 



k-t, Fusarium Solani var. suffuscum. k, Pseudopionnotal conidia from 7-days-old colony 

 in petri dish on hard potato agar (the middle spore above is typical for the culture); l, sporodochial 

 conidia from 47 -days-old culture on rye straw (many conidia have coarsely granulated protoplasm 

 and oil globules); m, compound conidiophore in form of dense tuft (looking from above, magnifi- 

 cation 250 limes), from 47 -days-old culture on potato stem plug; n, chlamydospores, o, sporo- 

 dochial conidia, from. 70-days-old cultu e < n potato tuber plug; p, typical ends of conidiophores 

 from J+7-days-ald culture on potato stem plug; q, sporodochial conidia from 87-days-old culture 

 on red raspberry cane plug; r, sporodochial conidia and conidiophore from 13-days-old culture 

 on potato tuber plug; s, sporodochial con'dia from 16-days-old culture on slightly acidified hard 

 potato agar; t, sporodochial conidia from 47-days-old culture on potato stem plug 



