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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 diameter;
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, /u. 38-54 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 disappear
when a dilute potassium hydroxide solution is applied.