SPIROGYRA 189 



150. Spirogyra reinhardii Chmielevski 1903. In Borge, Siisswas- 



ser flora Deutschland. 9, p. 31, Fig. 41. 



Vegetative cells loS-iiy/x x 85-310/^, with plane end walls; 4 to 6 

 chromatophores, making .5 to 2 turns; conjugation scalariform; tubes 

 formed by both gametangia; fertile cells inflated on the conjugating 

 side; zygospores ovoid, 78-100 /x x 115-175^^,; median spore wall chestnut 

 brown, irregularly reticulate. (PI. XXXI, Figs. 3-5.) 



Russia, Kharkov; Brazil. 



151. Spirogyra hunanensis Jao 1940. Sineftsia. 11, p. 297, PL 4, 



Figs. 4-5. 



Vegetative cells 88-1 00 /x x 75-210 /x, with plane end walls, and 8-10 

 nearly straight or slightly spiraled chromatophores; conjugation scalar- 

 iform; tubes formed by both gametangia; receptive gametangia inflated 

 on the conjugating side up to 150/J.; zygospores ovoid, 88-105 m ^ 

 i42-i63/(.; median spore wall yellow-brown, reticulate and verrucose, 

 with verrucae up to 13 m in length. (PI. XXXI, Fig. 6.) 



China, Hunan. 



SPECIES WITH SPORES LATERALLY COMPRESSED 



152. Spirogyra discoidea Transeau 1934. Trans. Amer. Micros. 



Soc. 53, p. 228. 



Vegetative cells 39-42 /x x 72-11 5 /x, with plane end walls; i chro- 

 matophore; conjugation scalariform; tubes formed by both gametangia; 

 receptive gametangia enlarged or inflated toward the middle; zygo- 

 spores compressed-globose, 40-44^1 x 56-65 /x; median spore wall brown, 

 smooth. (PI. XXXI, Fig. 7.) 



South Africa, Cape Town (E. Stephens Coll.). 



153. Spirogyra sphaerospora Hirn 1895. Acta Soc. pro Fauna et 



Flora Fennica. 11 (10), p. 10. 



Vegetative cells 43-45 /x x 1 80-320 /x, with plane end walls; i chro- 

 matophore, making about 3 turns; conjugation scalariform; tubes 

 formed by both gametangia; fertile cells greatly inflated (to 93-100 /x) 

 toward the middle; zygospores compressed-globose, 85-q5/x in diam- 

 eter; median spore wall yellowish-brown, smooth. (PI. XXXI, Fig. 9.) 



Finland, Lojo. 



Cedercreutz {Mem. Soc. pro Fauna et Flora Fennica, 11, p. 131) gives 

 evidence from examination of material from Lojo that Hirn's species is 

 identical with .S. pellucida (No. 156). This species is, therefore, listed here 

 tentatively on the basis of the single chromatophore. The published figures 

 of these 2 species are certainly very similar. Hirn may have been in error 

 concerning the number of chromatophores — a very unusual error for him. 



