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1 ZYGNEMATACEAE
II. Spores usually more than 40/1 in diam-
eter 7. Z. sl{ujae
12. Spores 24-33 M, scrobiculate, diam-
eter pits less than 2/i 6. Z. conspicuum
12. Spores 33-40/1, scrobiculate, diam-
eter pits 3-4 M ^f. Z. latvtonianum
12. Spores 38-42/1, punctate and ridged 10. Z.chungii
12. Spores 36-45/1, scrobiculate, diam-
eter pits 2/1 13- 2- adpectinattim
13. Diameter median spore wall pits 5-8/1. u. Z.sinense
13. Diameter median spore wall pits 4/t. . . 12. Z. globosum
14. Outer layer wrinkled, inner verru-
cose 9. Z. verrucosum
14. Outer layer scrobiculate, inner ver-
rucose 16. Z. laetevirens
14. Outer layer pitted, inner verrucose. 15. Z.areolatum
15. Median spore wall single, pits 2-3/1- in
diameter 17. Z. pectinatum
15. Median spore wall single, pits /•• 3-4 in
diameter 18. Z. excrassum
15. Median spore wall double, outer ver-
rucose 9. Z. verrucosum
16. With median spore wall single. ... 19. Z. neopectinatum
16. With median spore wall double. . . 20. Z. giganteum
17. Diameter vegetative cells 16/1 or less. . 21. Z. gedeanum
17. Diameter vegetative cells 17-27/1. 18
17. Diameter vegetative cells more than 27/1 21
18. Median wall smooth 19
18. Median wall not smooth 20
19. Median spore wall dark blue, diameter
34-40/1 22. Z. cyanosporum
19. Median spore wall light blue, diameter
30-40 /x
'^i- ^- czurdae
20. Diameter vegetative cells 16-18/1.,
spores compressed 35-
20. Diameter vegetative cells 17-24/1.. 24. Z.synadelphum
20. Diameter vegetative cells 24-26/1,
•^- carinaturn
diameter spore 32-35/1 26. Z. coeruleum
20, Diameter vegetative cells 23-27/1.,
diameter spore 36-42/1 27. Z. goral{hporense
20. Diameter vegetative cells 18-24/1,
forming mats on soil 25. Z. terrestre