244 



ZYC^NEMATACEAE 



succica (Spirogyra), XXIII, 7; 159 

 sulcata (SpiroRvra), XXI\'. 4; 162 

 sumatrana (Mougcotia), XV, 12: 96 

 suomiana (Spirogyra), XXXIV, 4; 200 

 supcrvanans (Spirogyra), XXII, 7: 154 

 synadclphum (Zygncma), IV, 1-2; 28 

 szcchwanensis (Spirogyra), XXVIII, 

 3; 176 



taftiana (Spirogyra), XXIV, 8; 163 

 talguppcnsc (Zygogonium), XI, 7-8; 66 

 talyschcnsis (Mougcotia), XV, 13; 97 

 taylorii (Spirogyra), XXXIII, 9; 197 

 Tcmnogametum, 1 17-1 8 



species of 



—descriptions, 1 18 



-illustrations, XX, i-io 



-key, 117 

 tenerriina (Mougcotia), XIX, 30-31; 111 

 tenuc (Zygncma), IV, 14-15; 32 

 tenuissima (Mougcotia), XIII, 2; 89 

 tenuissima (Spirogyra), XXXV, 5-6; 203 

 tenuius (Sirogonium), 232 

 teodoresci (Spirogyra), XXI, 8; 153 

 tcrrcstrc (Zygncma), VII, 16-18; 28 

 tetrapla (Spirogyra), XXXIX, 4; 218 

 texcnsis (Spirogyra), XXXIII, 5; 196 

 thaxteri (Tcmnogametum), XX, 7-9; 118 

 tholosporum (Zygncma), IV, 13; 32 

 thylespora (Mougcotia), XVIII, 6-8; 106 

 tiflFaniana (Zygnemopsis), VIII, 22-23; 54 

 tjibodensis (Spirogyra), 211 

 tolosana (Spirogyra), XXXVIII, 3; 214 

 torta (Spirogyra), XXIX, 10; 182 

 trachycarpa (Spirogyra), 187 

 transcaui (Mougcotia), XVII, 19-20; 104 

 transcaui (Tcmnogametum), XX, 5-6; 118 

 iranseauiana (Spirogyra), XXXVIII, 



10; 215 

 transeauiana (Zygnemopsis), IX, lo-ii; 56 

 transcauianum (Zygncma), 35 

 triplicata (Spirogyra), 174 

 tropica (Mougcotia), XIX, 2i; 112 

 tsingtaoensis (Spirogyra), XXXVII, 7; 210 

 tubcrculata (Spirogyra), 166 

 tubifcra (Mougcotia), XIII, 6-9; 90 

 tumida (Spirogyra), XXXVII, 9; 210 

 tumidula (Mougcotia), XIX, g-iir. 109 

 turfosa (Spirogyra), XXVI, 17; 171 



ubcrosperma (Mougcotia), XVIII, 



9-10; 106 

 ulcanum (Tcmnogametum), XX, 1-4; 118 



unduliscpta (Spirogyra), XXXV, 4; 203 



vaginatum (Zygncma), 34 

 varians (Mougcotia), X\'I, 12; 99 

 varians (Spirogyra), XXII, i; 153 

 variformis (Spirogyra), XXI, 9-10; 152 

 vauchcrii (Zygncma), V, 5; 33 

 vclata (Spirogyra), XXIV, i; 161 

 ventcrsicum (Sirogonium), XL, 7; 234 

 vcntricosa (Mougcotia), XIX, 24; 112 

 venusta (Spirogyra), XXXVII, 17-18; 212 

 verrucosa (Spirogyra), XLI, 19; 223 

 verrucosum (Zygncma), II, lo-ii; 24 

 vcrruculosa (Spirogyra), XXX, 8-10; 186 

 victoriensis (Mougcotia), XIII, 18; 91 

 viresccns (Mougcotia), XIX, 16; 110 

 viridis (Mougcotia), XIX, 3-4; 109 

 visenda (Spirogyra), XXXIV, 15; 202 



wabashensis (Spirogyra), XXXIV, 13; 201 



wangi (Spirogyra), XXXVIII, 14-15; 216 



wcberi (Spirogyra), XXXV, 14; 205 



weiwitschii (Spirogyra), 170 



westii (Spirogyra), 162 



woilnyi (Spirogyra), 172 



wrightiana (Spirogyra), I, 4-5; XXVII, 



7-8; 173 

 wuchangensis (Zygnemopsis), VIII, 



28-29; 55 



yunnancnse (Zygncma), 31 

 yunnanensis (Spirogyra), XXVII, 9; 173 



Zygnema, 13-47 



species of 



-descriptions, 22-45 



-illustrations, I, 2, 6, 8-9; II-VII; 

 XLI, 6-7; A-E 



-key, 17-22 



-list, 45-47 

 Zygnemopsis, 49-59 



species of 



—descriptions, 52-58 



-illustrations, VIII-IX 



-key, 50-51 



-list. 58-59 

 Zygogonium, 63-69 



species of 



-ilcscriptions, 65-69 



-illustrations, X, 10-19; ^'s ^II> i-u; 

 XLI, 1-5 



-key, 64-65 



-list, 69 



