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loi. Fertile cells cylindric, chromato-
SPIROGYRA 14 T
phores 6-7 144. S. ghosei
101. Fertile cells enlarged or inflated, chromatophores 3-8 102
102. Diameter vegetative cells less than 85 /x 103
102. Diameter vegetative cells more than 85 /^ 104
103. Vegetative cell diameter 54-60 /a,
chromatophores 3-4 i34- '^- ajricana
103. Vegetative cell diameter 56-71 a^,
chromatophores 3-5 iji- '^^ brunnea
103. Vegetative cell diameter 66-72/^,
chromatophores 6-8 147. 5. echinospora
103. Vegetative cell diameter 70-85 /-i,
chromatophores 5-8 14S. S. diluta
104. Median spore wall echinate, chromatophores
4-7 149. S. echinata
104. Median spore wall reticulate,
chromatophores 4-6 150. S. reinhardii
104. Median spore wall reticulate-
echinate, chromatophores 8-10.. 151. S.hunanensis
SPORES LATERALLY COMPRESSED
CHROMATOPHORES, TWO OR MORE
105. Spores compressed-ellipsoid, 120-140/^
X 145-255 ^t 175. S. crassoidea
105. Spores compressed-ovoid 106
105. Spores compressed-spheroid (lenticular) 108
106. Median spore wall smooth, chromatophores
8-9 165. S. jassiensis
106. Median spore wall pitted 107
106. Median spore wall verrucose,
chromatophores 11-16 176. S. rectispira
107. Diameter vegetative cells 80-95 /a,
chromatophores 6-12 164. S. formosa
107. Diameter vegetative cells 140-165/1,
chromatophores 6-12 167. S. crassa
108. Median spore wall smooth 109
108. Median spore wall variously ornamented 112
109. Diameter vegetative cells less than /a, 50 chromatophores 2-4 no
109. Diameter vegetative cells more than 50/1, chromatophores
3-10
no. Vegetative cell diameter 22-24 /t,
chromatophores 2-4 154. 5. sinensis
Ill