FusARiA OF Potatoes 205 



On hard lima-bean agar, culture eight days old; conidia from pseudo- 

 pioimotes (measurements made in April) : 



Conidia: 0-septate, 39 per cent, 11 x 2.6 (8.7-14 x 2. 1-3.2) )u 

 1-septate, 17 per cent, 18 x 3.2 (14-23 x 2.9-3.9) ^ 

 2-septate, 3 per cent, 24 x 3.3// (only four measured) 

 3-septate, 32 per cent, 49 x 3.6 (42-55 x 3.5-4.8)/^ 

 4-septate, 2 per cent, 53 x 4/i (only four measured) 

 5-septate, 6 per cent, 58 x 4.3 (52-65 x 3.5-4.8) ^ 

 6-septate, 1 per cent, 73 x 4.7ju (only one measured) 



On same media, culture nine days old (measurements made in May) : 

 Conidia: 0-septate, 11 per cent, 10 x 2.5 (5-15 x 1.6-3.3)/i 

 1-septate, 9 per cent, 17 x 3.1 (12-24 x 2.6-4) m 

 2-septate, 1 per cent 



3-septate, 43 per cent, 49 x 3.6 (31-54 x 2.7-4. 1)m 

 4-septate, 13 per cent 

 5-septate, 23 per cent, 50 x 4 (54-71 x 3.5-4.7)// 



Average of the above measurements: 

 Conidia: 0-septate, 27.5 per cent, 11 x 2.6// 

 1-septate, 10 per cent, 21 x 3// 

 2-septate, 2 per cent, 28 x 3// 

 3-septate, 35 per cent, 45.64 x 3.52// 

 4-septate, 9 per cent, 56.7 x 3.9/t 

 5-septate, 16 per cent, 60 x 4.2// 

 6-septate, 0.5 per cent, 78 x 4.5// 

 8-septate, very rare, 78 x 4.5ju 



35. Fusarium redolens Wr^^ var. Solani n. var. (Figs. 1pi and 31; PI. ii, 

 figs. 3 and4;Pl. V, fig. 2) 



Macroconidia typically more or less gradually attenuate, sometimes sud- 

 denly constricted at the apex, pedicellate, typically broader toward and 



« Fusarium. redolens Wr. is described by its author (see Wollenweber, Phytopath. 3 : 29-30, fig. 1 e, 

 1913) as follows: " Differs from all the above-mentioned species [F. oxysporum, F. Iracheiphilum, F. 

 rasinfeclum, F. vasinfectum var. inodoratum, F. lycopersici, and F. iiiveum] in the large size of its triseptate 

 conidia, 30-40 x 4.5-5.5^, and in the color of the brownish white conidial massas. A lilac odor is produced 

 on rice and milk. No blue sclerotia. Vascular parasite, cause of wilt and foot disease of Pisum sativum. 

 Distribution unknown;" 



