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7. Spores globose to ovoid, variable in
position, some extending into and di-
MOUGEOTIA 83
viding one or both of the gametangia 5. M.calcarea
8. Spores colorless with thick outer
pectic layer 7. M. victoriensis
8. Spores brown 9
8. Spores blue 11. M. f^erguelensis
9. Diameter spores 7-8 /u^, outer wall brown i. M. angusta
9. Diameter spores 13-24 /x, outer wall
brown 3- ^« parvula
10. Spores ovoid, longer axis ii-i5iu... 2. M.tenuissima
10. Spores asymmetric, ellipsoid or do-
lioform, longer axis 30-42 /a, outer
sporangium wall a thick pectic layer 4. M. tubijera
10. Spores ellipsoid, longer axis 20-28 /i- 6. M.elltpsoidea
II. Spores variable in position in the con-
jugating tube or dividing one or both
gametangia 5. M. calcarea
II. Spores globose or subglobose 12
II. Spores ovoid to quadrate-ovoid 16
12. Spores blue, vegetative cells about
i2iu. in diameter 11. M. \erguelensis
12. Spores blue, vegetative cells about
17-22 /A in diameter 12. M. maltae
12. Spores brown or yellow 13
13. Filaments mostly less than 20 /x in diameter 14
13. Filaments mostly more than 20 yu, in diameter 15
14. Spores globose, contained in the
conjugating tubes 8. M. recurva
14. Spores globose, extending into the
gametangia 10. M. drouetii
14. Spores globose, ovoid or ellipsoid. . 9. M. adnata
14. Spores rhomboid, usually lateral
conjugation i3- -^^ reinschii
15. Diameter of spores about 30-40M 15. M.scalaris
15. Diameter of spores about 40-45/x 14. M.sphaerocarpa
15. Diameter of spores 47-52 /x 16. M. jogensis
16. Spore diameter about 24-30 ju-, con-
jugation mostly lateral i3- ^- reinschii
16. Spores 36-40 /x X 40-55 jU, diameter
vegetative cells 19-24 /x 14. M. sphaerocarpa