FusARiA OF Potatoes 



251 



56. Fusarium Solatii (Mart. p. par.) Ap. et Wr. (Fig. 1, Xi and Yi; 

 Fig. 45, A to g; PI. i, fig. 1; PI. vi, fig. 7) 



Appel, 0., and WoUenweber, H. W., Arb. K. bid. Anst. Land- u. 

 Forstw. 8:64-78; PI. i, figs. 1 to 30; PL iii, 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 pledenchymic sporodochia from 66-days- 

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

 day s-old culture on hard lima-bean agar; d, pseudopionnotal conidia from 11 -days-old culture 

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

 on red raspberry cane plug; F, terininal, 1- to 3-septate, chlamydospores produced by hyphce and 

 conidia. the latter anastomosed, from 173-days-old cidt^ire on corn agar; G, terminal and inter- 

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



H-j, Fusarium Solani var. cyanum. h, Sporodochial conidia from 87-days-old cidture 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 

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

 conidia from J)7 -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 times), from ^7 -days-old culture on potato stem plug; n, chlamydospores, o, sporo- 

 dochial conidia, fro7n 70-days-old cidtu e m potato tuber plug; p, typical ends of conidiophores 

 from 47-days-old 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 plu^g 



