ZYGNEMOPSIS 55 



12. Zygnemopsis splendens Randhawa 1937. Proc. Indian Acad. 



Sci. 5, p. 297, Fig. 2. 



Vegetative cells 12-15 /x x 30-42 /x, with 2 more or less rounded 

 chromatophores; conjugation scalariform; zygospores varying from 

 compressed-ovoid to quadrangular-ovoid, 26-30 jU, x 40-50 /a; outer wall 

 blue, median wall yellow-brown, scrobiculate with pits 1-2 ju. in diam- 

 eter; often a layer of brownish granules between the outer and median 

 walls. (PL VIII, Fig. 25.) 



India, Fyzabad, U.P., January to March, 1937. 



13. Zygnemopsis wuchangensis Li 1937. Bull. Fan Mem. Inst. 



Biol., Botany. 8, p. 18. 



Vegetative cells 12-15 jU, ^ 32-84^1, each with 2 stellate chromato- 

 phores; conjugation scalariform; zygospores quadrangular-ovoid, 

 36-56 /A X 42-64^1. X 28-35 jU. i^ thickness; median spore wall yellow, 

 angularly scrobiculate, with very deep distinct pits, 2-4 ^c in diameter, 

 and with a distinct suture. (PI. VIII, Figs. 28-29.) 



China, Wuchang, Hupeh. 



14. Zygnemopsis stephensiae Transeau 1934- Trans. Amer. 



Micros. Soc. 53, p. 215, Fig. 21. 



Vegetative cells 12-15^1. x 36-60 /j-, with 2 more or less stellate chro- 

 matophores; conjugation scalariform; zygospores formed in the greatly 

 enlarged conjugating tubes and extending into both gametangia, which 

 are otherwise filled with pectic-cellulose material; spores quadrately 

 ovoid, 32-36 /A x 36-42 /U.; with angles rounded or truncate, and sides 

 straight or concave; median spore wall yellow, irregularly scrobiculate, 

 pits about 2-4 /A in size. (PI. IX, Fig. i.) 



South Africa, Cape Colony (Stephens Coll.). 



15. Zygnemopsis iyengarii Randhawa 1937. Proc. Indian Acad. 



Sci. 5, pp. 306-8, Figs. 5-6. 



Vegetative cells 12-16 /a x 60-120 m, with 2 more or less rounded 

 chromatophores in each cell; conjugation scalariform; zygospores 

 formed in the greatly distended tube and extending into the gam- 

 etangia; zygospores compressed-globose to ovoid, 38-54 /u. in diameter, 

 with a thick outer blue wall, a smooth or undulate yellow-brown 

 median wall, which is variously wrinkled by unequal contraction; with 

 a few or many granules between the walls; aplanospores ovoid to 

 spindle-shaped, 24-28^1 in diameter, with similar walls. (PI. IX, 

 Figs. 2-3.) 



India, Fyzabad, U.P., January, 1937. 



On shrunken spores there are ridges, variously disposed, which disap- 

 pear when a dilute potassium hydroxide solution is applied. 



