302 zv(;nfmataceae 



PLATE XXIX 



Spikogvra 



Figs. 1-2. — S. chung^ingcnsis, gametangia, zygospores, and details of 

 spore wall. After Jao. Pic. 3. — 5. oricntalis, receptive gametangiutn and 

 zygospore from Burma. After West. Fics. 4-5. — S. subcylindrospora, gam- 

 etangia, zygospore, and spore wall pattern, from Szechwan, China. After 

 Jao. Fig. 6. — S. nuenningcnsis, zygospore and gametangia from Yunnan, 

 China. After Li. Fig. 7. — S. shantungensis, zygospore and gametangia from 

 China. After Li. Figs. 8-9. — 5. pulchrifigurata, gametangia, zygospores, 

 and spore wall details from Szechwan. Alter Jao. Fig. 10. — 5. torta, gam- 

 etangia and zygospores from Massachusetts. After Blum. Figs. 11-13. — S. 

 quadnlcitninata, zygospore, optical section of spore wall, and spore wall 

 pattern, from Szechwan. After Jao. Figs. 14-16. — S. rhizobrachialis, gam- 

 etangia, zygospore, rhizoid, and spore wall pattern, from Chungking, 

 China. After Jao. Figs. 17-18. — 5. paraguayensis, zygospores and spore 

 wall pattern from South America. After Borge. Figs. 19-21. — 5. subretic- 

 nlata, zygospore, optical section of spore wall, and spore wall pattern, from 

 South Africa. After Fritsch. 



