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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.