158 



C. D. Sherbakoff 



Hab. On rotted tubers of Solarium tuberosum, New York State. 



Differs from F. effusum mainly by absence or very rare occurrence of 

 6- and 7-septate conidia. 



Latin description. — Conidiis typice ellipsoidalibus, maxime in utrosque 

 terminos gradatim attenuatis, distincte sed non insignite pedicellatis, 

 5-septatis, 54x4.05 (43-63 x 3.7-4.7) m, "salmon-color" (R) magnis, in 

 parvis (usque ad \ cm. diam.) sporodochiis; nullis chlamydosporis; co- 

 nidiophoris typice plus minusve compositis, fruticosis; mycelio ex albo 

 "pale cinnamon" (R) vel "pomegranate" (R) prope substratum; primum 



Fig. 15. — Fusarium lucidum. a, Sporodochial conidia, b, conidiophores, from Ifl '-days-old 

 culture on wheat kernels; c, pseudopionnotal conidia from 11 -days-old culture on slightly acidified 

 hard potato agar; d, sporodochial, e, aerial, conidia from 75-days-old red raspberry cane plug; 

 F, pseudopionnotal conidia fro?n 36-days-old culture on hard oat agar; g, sporodochial conidia, 

 H, conidiophore, from 20-days-old culture on hard lima-bean agar with 2 per cent glucose; i, pseudo- 

 pionnotal conidia from 7-days-old culture on hard lima-bean agar urith 2 per cent glucose; 

 3, sporodochial conidia from 65-days-old culture on potato stem plug; K, sporodochial conidia 

 from 24-days-old culture on potato tuber plug; l, sporodochial conidia from 82-days-old culture 

 on potato tuber plug (the two at the left abnormal) 



substrato, in agare Solani tuberosi non glucoso, e pallide rubello " pome- 

 granate" (R) vel simili colore, in eodem agare glucoso, ex argillaceo 

 " buckthorn-brown " (R). 

 Hab. In tuberibus putridis Solani tuberosi, New York, Amer. bor. 



Measurements of conidia from cultures on different media are as fol- 

 lows: 



