FusARiA OF Potatoes 135 



On hard lima-bean agar, culture ten days old: 

 Conidia: 0-septate, 1.5 per cent, 7.5 x 3.2 fj. 



1-septate, 4 per cent, 10 x 3.2 (7-17 x 2.7-3.5) /x 



2-septate, very rare 



3-septate, 4 per cent, 27 x 4.1 (19-41 x 3.5-4.1)/^ 



4-septate, 3 per cent 



5-septate, 86 per cent, 46 x 4.4 (35-58 x 4-4.8) /x 



6-septate, 1.5 per cent, 52x4.5 (50-60 x 4.3-4.8) m 



Average of the above measurements : 

 Conidia: 0-septate, 0.5 per cent, 7.5 x 3.2/x 

 1-septate, 1 per cent, 10 x 3.2ju 

 2-septate, very rare 

 3-septate, 4 per cent, 27 x 4.1/i 

 4-septate, 6 per cent, 27 x 4.1/i 

 5-septate, 87 per cent, 41.6 x 4.6m 

 6- and 7-septate, 1.5 per cent, 47 x 4.6/i 



The averages of Appel and Wollenweber's (1910:189-190) measure- 

 ments are as follows: 

 Conidia: 3-septate, 3 per cent, 25 x 4.5/* 



4-septate, 2 per cent, 29 x 4.5/i 



5-septate, 59 per cent, 42 x 4.4/t 



6-septate, 23 per cent, 49 x 4.6/t 



7-septate, 13 per cent, 49 x 4.7/x 



There is a notable difference between the data presented by the writer 

 and those of Wollenweber only in the proportion of 6- and 7-septate 

 conidia, the size of 5- and of 6- and 7-septate conidia being very much the 

 same. 



8. Fusarium falcatum Ap. et Wr. (Figs. Ix and 7) 



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

 Forstw. 8:175-185; PI. ii, figs. 100 to 110; PL iii, fig. 9; text fig. 10, a. 

 1910. 



Syn. Fusarium vasinfectum var. Pisi Schikorra, Arb. K. biol. Anst. Land- u. Forstw. 4:157, 

 PI. VII, 1906; notF. vasinfectum var. Pisi van Hall, Ber. deut. Bot. Gesell. 21 : 4, pi. 4, 1903. 

 WoUenweber, Phytopath. 3:31, fig. 1, l, 1913. 



