586 AQUAT/C PHYCOMYCETES 



coarse, 6-18 ;x in diameter, with numerous nonseptate subspherical 

 (14-21 jx in diameter), oval (12-18 by 16-22 (x) fusiform (14-16 by 25- 

 28 \x) or irregular enlargements; zoosporangia terminal or intercalary, 

 hyaline, smooth, spherical ( 1 5-40 fx in diameter), oval (1 8-30 by 22-38 jx), 

 fusiform, clavate or irregular, operculum 10-15 [x in diameter, zoo- 

 spores spherical, 4.5-5 [x in diameter with a single refractive globule 

 0.8-1.2 (a in diameter and flagellum 24-26 fx long; resting spore hyaline, 

 smooth, spherical (12-23 [x in diameter), oval (18-20 by 22-24 fx), 

 germination not observed. 



Saprophytic in vegetable debris, United States. 



NOWAKOWSKIELLA RAMOSA E. J. Butler 



Mem. Dept. Agr. India, Bot. Ser., 1 : 141, pi. 10, figs. 3-10. 1907 



(Fig. 35 1, p. 583) 



"Rhizomycelium hyaline, profuse, richly-branched, occasionally sep- 

 tate; tenuous portions 1.5-8 [x in diameter, occasionally anastomosing; 

 spindle organs oval 4—6 x 6-10 £x, or broadly fusiform 5-7 x 12-16 fx, 

 or almost spherical 6-9 \i, or elongate. Sporangia terminal or intercalary, 

 apophysate or non-apophysate, apophysis when present usually sub- 

 spherical and up to 11 (x in diameter; sporangia spherical 20-50 [x, or 

 pyriform 15-30 X 25-40 [x, or oval 15-20 x 22-30 jx, or elongate or 

 slightly irregular, with 1-3 low exit papillae or exit tubes up to 100 jx 

 long. Opercula oval or circular in outline, 4-6 [x in diameter. Zoospores 

 spherical 6.6-8.8 [x, with a large (3 fx) plastic refractive globule and a 

 flagellum 36-40 fx long; frequently becoming amoeboid; forming a 

 globular mass at the exit orifice immediately after emerging but soon 

 separating and dispersing. Resting spores formed from proliferated 

 spindle organs and short lateral branches; spherical or slightly angular, 

 15-26 [x, hyaline to yellowish in color, with numerous small refractive 

 globules or a large central one surrounded by smaller globules; wall 

 1.8-2.6 [x thick, smooth or slightly verrucose (?); resting spores usually 

 functioning as prosporangia in germination and giving rise to thin-walled 

 zoosporangia on their surface; occasionally germinating directly as 

 sporangia with an exit tube which bursts through the spore wall" 

 (Karling, 1944b). 



