240 



ZYGNEMATACEAE 



crassa (Mougcotia), 95 



crassa (Spirogyra), XXXII, 6; F; 193 



crassispina (Spirogvra), XXXIX, 



14-16: 220 

 crassiuscula (Spirogyra), 195 

 crassiusculum (Zygncma), VI, 6-7; 37 

 crassivallicularis (Spirogyra), XXXIX, 



6; 219 

 crassoidca (Spirogyra), XXXIII, i; 195 

 cratcrophora (Mougcotia), XVIII, 



11-14; 106 

 croasdalcac (Spirogyra), XXXVII, 14; 211 

 cruciatum (Zygncma), I, 9; 36 

 cyanea (Mougcotia), XVII, 15-17; 102 

 cyancum (Zygncma), VI, 9-10; 38 

 cyanosporuni (Zygncma), 27 

 cylindrica (Spirogyra), XXXV, 9-10; 203 

 cylindricum (Zygncma), VII, 9; 41 

 cylindrospcrmuin (Zygncma), IV, 16; 31 

 cylindrospora (Spirogyra), 188 

 cylindrosporum (Zygncma), VI, 2; 36 

 czurdae (Spirogyra), XLI, lo-ii; 222 

 czurdae (Zygncma), III, 13-14; 27 



daedalea (Spirogyra), XXV, 9-10; 166 

 daedaleoides (Spirogyra), XXV, 



13-15; 167 

 daytonae (Mougcotia), XVI, 5; 98 

 Debarya, 75-78 



species of 



-ticscriptions, 76-78 



-illustrations, XII, 18-30 



-key, 76 

 dccimina (Spirogyra), XXVII, 16; 175 

 dccussata (Zygncmopsis), IX, 12-15; 57 

 decussatum (Zygncma), II, 7; 23 

 dclicata (Mougcotia), XVIII, 17; 107 

 dcnticulata (Spirogyra), XXXVII, 15; 213 

 dcntircticulata (Spirogyra), XXXVI, 



17-18; 209 

 dcprcssa (Mougcotia), XVII, i; 101 

 desmidioidcs (Zygnemopsis), VIII, 



12-14; 53 

 dictyospora (Spirogyra), XXVIII, 14; 179 

 diluta (Spirogyra), XXX, 19-20; 188 

 discoidca (Spirogyra), XXXI, 7; 189 

 discrcta (Spirogyra), XXXVI, 6: 207 

 disjuncta (Mougcotia), XVII, 7-S; 102 

 distcnta (Spirogyra), 174 

 drouetii (Mougcotia), I, lo; 92 

 dubia (Spirogyra), XXVIII, 8; 178 



cchinata (Spirogyra), XXXI, 1-2; 188 

 cchinospora (Spirogyra), XXX, 17-18; 188 

 cicgantula (Mougcotia), XVIII, 21-22; 108 

 cliipsoidca (Mougcotia), XIII, 14; 91 

 cllipsoidcum (Zygncma), A; 44 

 cilipsospora (Spirogyra), XXVIl, 11; 173 

 clliptica (Spirogyra), XXVII, 6; 172 

 cmiliancn.sis (Spirogyra), XXVII, 12; 174 



Entransia, 121 



species of 



-description, 121 



-illustration, XX, 15 

 cricetorum (Zygogonium), X, 10-16; 65 

 esthonica (Spirogyra), XXXIV, 2-3; 200 

 cxcommunc (Zygncma), VII, 3: 40 

 cxcomprcssum (Zygncma), VI, 14; 39 

 cxcrassum (Zygncma), III, 7; 26 

 exilis (Spirogyra), XXVII, 13; 174 

 extenuc (Zygncma), IV, 12; 31 

 cxuviclliforme (Zygogonium), XII, 6-8; 68 



fallax (Spirogyra), XXXVIII. 13; 216 

 fanicum (Zygncma), V, 13-14; 35 

 farlovvii (Spirogyra), I, 3; 204 

 fennica (Spirogyra), XXII, 4; 154 

 fcrtilis (Zygncmopsis), IX, 17; 57 

 fimbriata (Entransia), XX, 15; 121 

 flavcscens (Spirogyra), XXIII, i; 157 

 flavum (Zygncma), V, 3; 33 

 floridana (Mougcotia), 104 

 floridana (Zygncmopsis), VIII, 8-9; 52 

 floridanum (Sirogonium), 233 

 fluviatilis (Spirogyra), XXX, 5; 184 

 formosa (Spirogyra), XXXII, 4: 192 

 fossa (Spirogyra), XXVIII, 15-16: 179 

 foveolata (Spirogyra), XXXVI, 5: 206 

 fragilis (Mougcotia), 111 

 fragiJis (Spirogyra), XXI, 6: 152 

 frankliniana (Spirogyra), 190 

 frigidum (Zygncma), I, 6; 41 

 fritschiana (Spirogyra), XXXVI, 



19-20; 208 

 fucllebornci (Spirogyra), XXVI, 4; 168 



gallica (Spirogyra), XXIII, 8; 159 

 gangcticum (Zygncma), 43 

 gedcanum (Zygncma), III, 11-12; 27 

 gelatinosa (Mougcotia), XVI, 17; 101 

 genuflcxa (Mougcotia), XI\', 16-17: 94 

 gcrmanicum (Zygncma), V, 8-9; 35 

 ghosci (Spirogyra), XXV, 12; 187 

 gibberosa (Spirogyra), XXII, lo-ii; 155 

 giganteum (Zygncma), III, 9-10; 27 

 glabra (Spirogyra), XXXI, 16; 191 

 globosum (Zygncma), III, 2-3; 25 

 giobulispora (Mougcotia), X\', 15-16; 98 

 glyptospcrma (Debarya), XII, 18-19; 76 

 goctzci (Sjiirogyra), XXX\'I, 21; 208 

 gorakhporcnsc (Zygncma). 29 

 godandica (Mougcotia), XV, 14: 97 

 gracilis (Spirogyra), XXI, 5; 152 

 gracilis (Zygncmopsis), VIII, 6-7; 52 

 gracillima (Mougcotia), XIX, 1-2; 108 

 granulata (Spirogyra), XXXIX, 7-8; 219 

 granulosa (Mougcotia), XVIII, 18-20; 107 

 gratiana (Spirogyra), XXXVIII, 8-9; 215 

 grcvillcana (Spirogyra), XXXV, 19-20; 205 

 grocnianilicn fSpirogyra), XXXVI, 

 10-13; 207 



