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3i6 ZYCINEMATACEAE
PLATE XXXVI
Spirocvra
Fig. I. S. chuniiw, zygospores and gametangia from (!!hina. After Jao.
Figs. 2-4. S. incrassata, lateral and scalariform conjugation and details of
spore wall from Berlin. After Czurda. Fig. 5.—5. jovcolata, zygospore and
gametangia from Latvia. After Skuja. Fig. 6.—5. discreta, zygospore and
gametangia from central Illinois. Fig. 7.—5. \uusamoensis, gametangia
and zygospores from Finland. After Hirn. Figs. 8-9. S. amplcctcns,
lateral conjugation and details of spore wall Irom China. After Skuja.
Figs. 10-13. ^- g'oenlandica, vegetative cell, lateral and scalariform con-
jugation, zygospores, and an aplanospore from Boston, Massachusetts.
Figs. 14-16.—5. quadrata, scalariform and lateral conjugation, and resulting
zygospores from Szechwan, China, after Jao; the aplanospores were collected
in Illinois. Figs. 17-18. S. dentireticulata, zygospores and details of spore
wall from China. After |ao. Figs. 19-20. S. jritsch'uina, zygospores and
gametangia from South Africa. After Fritsch and Rich. Fig. 21. S. goetzei,
zygospores and receptive gametangia from Lake Nyassa. After Schmidle.