26o ZYCJNEMATACEAE 



PLATE VIII 



Zygnemopsis 



Figs. 1-2. — Z. sil{angensis, vegetative cells and zygospores from Yiin- 

 nan, China. After L. C. Li. Figs. 3-5. — Z. orientalis, vegetative cells, 

 immature and mature zygospores from northern India. After Carter. 

 Figs. 6-7. — Z. gracilis, vegetative cells and aplanospores from Fyzabad, 

 India. After Randhawa. Figs, 8-9. — Z. ftoridana, zygospores in face and 

 lateral views, from Florida. Figs, io-ii. — Z. minuta, zygospore and aplan- 

 ospores from Michigan. Figs. 12-14. — ^'- desmidioides, zygospores, face 

 and edgewise views, and vegetative cells from Latvia. After Skuja. Figs. 

 15-17. — Z. Columbiana, zygospores in face and edgewise views, and an 

 aplanospore from British Columbia. Figs. 18-21. — Z. amcricana, various 

 forms of zygospores and a pair of parthenospores from Ontario, Canada. 

 Figs. 22-23. — ^- ti§(iniana, zygospores from Fort Myers, Florida. Fig. 24. — 

 Z. sinensis, vegetative cell and zygospore from Hupeh, China. Fig. 25. — Z. 

 splcndcns, zygospore from Fyzabad, India. After Randhawa. Figs. 26-27. — 

 Z. indica, zygospore and aplanospore from Hamira, India. After Randhawa. 

 Figs. 28-29. — ■^- wuchangcnsis, zygospore and vegetative cell from Hupeh, 

 China. After L. C. Li. 



