206 



CD. Sherbakoff 



more curved near apex, 3-septate, 36.4 x 4.86 (31-41 x 4.3-5) /x, often 

 also 4- and 5-septate, usually in numerous from small to medium (up to 

 2| millimeters, commonly | millimeter, in diameter) sporodochia, 

 sometimes, especially on different agars and in an early stage of culture 

 growth, in pseudopionnotes; from nearly white in color when in small 

 powdery masses, to a bright orange color when in comparatively large 

 sporodochia on nearly dry potato stems; mostly, however, from a light 

 pinkish cinnamon to a pinkish buff; aerial mycelium sometimes medium 

 well developed but usually very scant, short, from white to somewhat gray- 

 ish or brownish gray in color (PI. ii, fig. 3); color of substratum, on agar 

 rich in glucose, as shown on Plate ii, figure 4, which is different from all 

 the other Fusaria of the section Elegans. 



Fig. 31. — Fvsarium redolens var. Solani. A, Chlamydospores produced by conidia and 

 mycelium from 1 20-day s-old culture on -potato stem plug: b, conidiophores from 14--days-old 

 culture on slightly acidified hard potato agar; c, anastomosed conidia from 13-day s-old culture 

 on hard lima-bean agar; d, sporodochial conidia from 35-days-old culture on potato stem plug; 

 E, pseudopionnotal conidia, f, conidiophores, from IJ^-days-old cidture on slightly acidified 

 hard potato agar; g, sporodochial conidia from 63-days-old culture on ivhole grain of rye: ii, normal 

 pseudopionnotal conidia from 13-days-old culture on hard lima-bean agar; i, pseudopionnotal 

 conidia from 9-days-old culture on hard lima-bean agar ivith 2 per cent glucose {the longest spore 

 is typical); J, pseudopionnotal conidia from 120-days-old culture on potato stem plug; K, spo- 

 rodochial conidia from 48-days-old culture on red raspberry cane plug 



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

 Differs from F. redolens Wr. by somewhat narrower conidia and by 

 color of substratum,*^ especially on potato agar rich in glucose. 

 Measurements of spores on different media are as follows: 



« WoUenweber does not directly give color of substratum of his F. redolens, but judging from his dsfinite 

 negative statement in regard to F. conglutinans Wr. it appears evident that F. redolens does not differ notice- 

 ably in color from F. oxysporum and the majority of other species of the section Elegans. 



