194 ZYGNEMATACEAE 



Most of the early records were based on vegetative filaments. Found hybrid- 

 izing with S. nitida at Starkville, Mississippi. Found conjugating with 

 5. communis by Andrews, 191 1. 



168. SpmoG"iTiA MANORAMAE Randhawa 1938. Proc. Indian Acad. 



Set. 8, p. 360. 



Vegetative cells 80-90 /j. x 80-160 )u., with plane end walls; 7 to 10 

 chromatophores, straight, or making .5 turn in the cell; conjugation 

 scalariform; tubes formed by both gametangia; fertile cells more or less 

 inflated; zygospores lenticular, 75-86 /^ x 58-80 /x; median wall yellow- 

 brown, irregularly corrugate and finely verrucose-punctate. (PI. XXXII, 

 Fig- 7-) 



India, Basti, Upper Punjab. 



169. Spirogyra jatobae Transeau 1938. Amer. Jour. Bot. 25, 



p. 527, Figs. 14-15. 



Vegetative cells 1 18-130 /j- x 108-500 m, with plane end walls and 

 8-1 1 chromatophores, straight or making i turn in the cell; conjugation 

 scalariform; tubes formed by both gametangia; receptive gametangia 

 slightly inflated, especially on the conjugating side; zygospores com- 

 pressed-spherical, 108-140 /i. x 78-90 i".; median wall yellow-brown, irreg- 

 ularly and minutely verrucose. (PI. XXXII, Figs. 8-9.) 



Brazil, Jatoba, October 3, 1933 (Drouet Coll.). 



170. Spirogyra maxima (Hassall) Wittrock 1882. Bot. Notiser. 



P-57- 

 Vegetative cells 1 18-140 /j. x 100-250 jh, with plane end walls; 6 to 7 

 chromatophores, making .2 to .8 turn; conjugation scalariform; tubes 

 formed by both gametangia; fertile cells cylindric; zygospores lentic- 

 ular, 100-125 /x x 75-95iu^; median spore wall golden-brown, reticulate. 

 (PI. XXXII, Figs. lo-ii.) 



United States: California; Wisconsin; and the eastern half of the 

 United States. 



Europe; South America; Australia; India; China. 



Found hybridizing with S. submaxima (No. 159) at Charleston, Illi- 

 nois. Woile collected specimens of S. maxima hybridizing with S. nitida. 

 These were distributed as No. 541, in Wittrock and Nordstcdt's Algae 

 Exsiccatae. 



171. Spirogyra heeriana Nageli 1849. In Kiitzing, Species Al- 



garum, p. 442. Tabulae p/iycologicae. 5, PL 28, Fig. 3. 

 Vegetative cells 130-150 /a x i 30-250 m, with plane end walls; about 

 8 chromatophores, making .5 to i turn in the cell; conjugation scalar- 

 iform; tubes formed by both gametangia; fertile cells not inflated, 



