INDEX 



243 



punctiformis (Spirogyra), XXXIV, 



5-6; 200 

 punctulata (Spirogyra), XXX, 11-13; 187 



quadrangulata (Mougeotia), XIX, 



19-20; 1 1 1 

 quadrangulatum (Zygnema), VII, 14; 42 

 quadrata (Spirogyra), XXXVI, 14-16; 208 

 quadrata (Zygnemopsis), IX, 4-5; 56 

 quadriiaminata (Spirogyra), XXIX, 



11-13; 182 

 quinquelaminata (Spirogyra), XXXIX, 



lo-ii; 219 



ralfsii (Zygnema), IV, 6; 29 

 rava (Mougeotia), XIX, 25; 113 

 rectangularis (Spirogyra), XXXVIII, 



11-12; 215 

 rectispira (Spirogyra), 196 

 recurva (Mougeotia), XIII, 13; 91 

 reflexa (Spirogyra), XXXIV, 7-8; 200 

 regellii (Mougeotia), XIX, 7-8; 109 

 regularis (Spirogyra), XXXVII, 11-12; 213 

 reinhardii (Spirogyra), XXXI, 3-5; 189 

 reinschii (Mougeotia), XIV, 3; 92 

 reticulata (Hallasia), X, 1-9; 61 

 reticulata (Spirogyra), XXXIX, 5; 218 

 rhizobrachialis (Spirogyra), XXIX, 



14-16; 183 

 rhizoides (Spirogyra), 178 

 rhizopus (Spirogyra), XXVIII, 11-13; 179 

 rivularis (Spirogyra), XXVI, 8; 169 

 robusta (Mougeotia), XVI, 2-4; 98 

 robusta (Spirogyra), XXIV, 14-15; 165 

 rotundangulata (Mougeotia), XIX, 



13-14; 110 

 rugosa (Spirogyra), 206 

 rugulosa (Spirogyra), XXXIV, 14; 201 



sahnii (Spirogyra), 160 

 sanfordiana (Mougeotia), XVI, 7; 99 

 scalaris (Mougeotia), XIV, 7-8; 93 

 schmidtii (Spirogyra), XXVIII, 19-20; 180 

 schwabei (Zygnema), VII, 10; 42 

 scripta (Spirogyra), XXX, 3-4; 184 

 scrobiculata (Spirogyra), XXIV, 17; XXV, 



6-7; 165 

 seminoleana (Mougeotia), XVII, 22; 103 

 semiornata (Spirogyra), XXXV, 



15-16; 205 

 setiformis (Spirogyra), XXVII, 4-5; 172 

 shangtungcnsis (Spirogyra), XXIX, 7; 182 

 siamensis (Spirogyra), 175 

 sibirica (Spirogyra), XLI, 8-9; 222 

 sikangensis (Zygnemopsis), VIII, 1-2; 52 

 silvicola (Spirogyra), XXI, 7; 151 

 sinense (Zygnema), III, i; 25 

 sinense (Zygogonium), XII, 1-5; 67 

 sinensis (Mougeotia), XV, 4; 95 



sinensis (Spirogyra), XXXI, 10; 190 

 sinensis (Zygnemopsis), VIII, 24; 54 

 singularis (Spirogyra;, XXI, 4; 151 

 Sirocladium, 119 



species of 



-description, 119 



-illustrations, XX, 11-14 

 sirogonioides (Spirogyra), XXXIII, 



7-8; 199 

 Sirogonium, 231-36 



species of 



-descriptions, 232-36 



-illustrations, XL; G-K 



-key, 232 



-list, 236 

 skujae (Spirogyra), XXIV, 12; 164 

 skujae (Zygnema), 24 

 smithii (Debarya), XII, 27-28; 77 

 smithii (Spirogyra), XXVIII, 17-18; 180 

 sphaerocarpa (Mougeotia), XIV, 4-6; 92 

 sphaerocarpa (Spirogyra), XXXIX, 



17-18; 221 

 sphaerospora (Spirogyra), XXXI, 9; 189 

 sphaerospora (Zygnemopsis), IX, 6-7; 56 

 spiralis (Zygnemopsis), IX, 16; 57 

 Spirogyra, 123-229 



species of 



-descriptions, 150-223 



-illustrations, I, i, 3-5, 7; XXI-XXXIX; 

 XLI, 8-23; F 



-key, 129-50 



-list, 223-29 

 splendens (Zygnemopsis), VIII, 25; 55 

 splendida (Spirogyra), XXVII, 17; 174 

 spontaneum (Zygnema), VII, 5-7; 41 

 spreeiana (Spirogyra), XXXVII, 4-6; 210 

 stagnale (Zygnema), 31 

 stellinum (Zygnema), I, 8; V, 16; VI, i ; 36 

 stephensiae (Zygnemopsis), IX, i; 55 

 stephensiae (Zygogonium), XLI, 1-5; 69 

 sterile (Zygnema), VII, ii; 41 

 sticticum (Sirogonium), XL, 1-4; G; 233 

 subcrassa (Mougeotia), XIV, 18; 94 

 subcruciamm (Zygnema), V, 7; 34 

 subcylindricum (Zygnema), VII, 13: 43 

 subcylindrospora (Spirogyra), XXIX, 



4-5; 181 

 subfanicum (Zygnema), V, 15; 35 

 submarina (Spirogyra), 169 

 submaxima (Spirogyra), 191 

 subpaludosa (Mougeotia), XIX, 32; 113 

 subpapulata (Spirogyra), XXV, 1-2; 165 

 subpellucida (Spirogyra), XXXIX, 19; 221 

 subreticuiata (Spirogyra), XXIX, 



19-21; 183 

 subsalina (Spirogyra), XXII, 9; 157 

 subsalsa (Spirogyra), XXIII, 2; 158 

 substellinum (Zygnema), V, i; 32 

 subtile (Zygnema), 31 



