284 ZYGNEMATACEAE 



PLATE XX 



Temnogametum, Sirocladium, and Entransia 



Figs. 1-4. — Temnogametum uleanum, vegetative cells and gametangia, 

 zygospores formed by scalariform and lateral conjugation, from Brazil. 

 After Mobius. Figs. 5-6. — T. transeaui, mature zygospores formed by scalar- 

 iform and lateral conjugation; early stages similar to the preceding species, 

 from Ecuador. After Prescott. Figs. 7-9. — T. thaxtert, vegetative cell, two 

 gametangia, zygospore, and aplanospore from Trinidad, British West Indies. 

 Fig. 10. — T. hetcYosporum, vegetative cell, lateral and scalariform conjuga- 

 tion from Angola. After West. Figs. 11-14. — Sirocladium kumao'ense, 

 vegetative cells, three aplanospores, a parthenospore (Fig. 13), and a zygo- 

 spore and gametangia from northern India. Drawn from type specimens. 

 Fig. 15. — Entransia fimbriata, vegetative cells with characteristic parietal 

 chromatophores with nucleus between, from Nova Scotia. After Hughes. 



