324 Z^'CNFMATACHAH 



PLATE XL 



SlROGONllM 



Figs. 1-4. — 5. sticticun), various types ot conjugalion ami zygospores. 

 The Hrst three figures based on collection from Mayhew, Mississippi: {a) 

 two pairs ot equal gametangia, {b) conjugation between pairs of the larger 

 subdivisions ol the progametangia, (r) zygospore from three gametes 

 54 /x X 144/1. Alternating pairs of conjugants between long and short 

 gametangia, from India. After Randhawa. Fig. 5. — 5. megasporum, gam- 

 etangia and zygospore from Szechwan, China. After Jao. Fig. 6. — S. pscudo- 

 floridanum, gametangia and zygospore from Wisconsin, .\fter Prescott. 

 Fig. 7. — S. ventcrsicum, gametangia and zygospore from the Transvaal. 

 Fig. 8. — S. melutiosponim, gametangia and zygospore from India. After 

 Randhawa. Fig. 9. — 5. indicum, zygospore and gametangia from India. 

 After Singh. Figs, io-ii. — S. hut, vegetative cell, zygospore, and details 

 of spore wall from Kiangsi, China. After L. C. Li. Figs. 12-13. — S. tlli- 

 noicnsc, early stage in conjugation with pectic ring around adhesion disc, 

 mature zygospore, and subtending gametangia. On some spores the retic- 

 ulum is less prominent than in this figure. 



