296 



INDEX. 



spongiosum, Staurastrum, var. per- 



bifidum, V 78 

 Sportella, Cosmarium, III 185 



- var. Corbula, III 183 



var. subnudum, III 186 



- Ursinella, III 185 

 Staurastrum, I 2, 3, 24, 28 ; IV 118 



- Micrasterias, V 101 

 Stella, Didymocladon, V 194 



- Staurastrum, V 194 

 stellinum, Cosmarium, II 102 

 strangulatum, Dysphiiictium, III 29 

 strangulatus, Calocylindrus, III 29 

 stratum, Oocardium, V 204 



var. minor, V 205 

 Strensallense, Staurastrum, V 196 

 Streptonema, I 25, 28 



striata, Ursinella, III 223 

 striatum, Cosmarium, III 223 

 strigosa, Arthrodia, I 165 

 strigosum, Closterium, I 165 



- var. typicum, I 165 

 striolata, Arthrodia, I 123 

 striolatum, Closterium, I 122 



- var. a, I 122 



- var. costatum, I 121 



- var. elongatum, I 125 



- var. orthonotum, I 123, 124 



- f. recta, I 124 



- var. tumidum, I 123 



- var. typicum, I 123 



- var. Ulna, I 127 

 Pliycastrum (Amblyactinium), 



IV 177 



- Staurastrum, IV 177 



- f. brasiliensis, IV 177 



var. divergens, IV 178 



- var. celandicum, IV 177 

 subalatum, Cosmarium, III 255 

 subarctoum, Cosmarium, III 31 



- f. punctata, III 32 

 subarcuatum, Staurastrum, V 41 

 subaversum, Cosmarium, II 174 

 subavicula, Staurastrum, V 175, 181 

 Subbotrytis, Cosmarium, IV 5 

 Subbroomei, Cosmarium, IV 23 

 subcapitulum. Cosmarium, III 73 

 subcirculare, Cosmarium, II 138 



- var. rugosum, II 139 

 subcontractum, Cosmarium, II 174 

 subcostata, Ursinella, III 236 

 subcostatum. Cosmarium. Ill 236 



- var. Bceckii, III 238 



- f. minor, III 238 

 subcrenata, Ursinella, III 229 

 subcrenatum, Cosmarium, III 228 



- var. divaricatum, III 230, 238 

 subcruciatum, Staurastrum, V 42 



Subcucuniis, Cosmarium, II 155 

 subcylindricum, Cosmarium, IV 44 

 subdanicum, Cosmarium, 111 122 

 subdirectum, Closterium, I 125 

 subexcavatum, Cosmarium, III 148 



var. ordinatum, III, 149 

 subgracillimum, Staurastrum, V 118 

 subhastiferuni, Xanthidium, IV 56 



var. Murrayi, IV 57 

 subjuncidum, Closterium, I 125 

 sublsevispinum, Stuarastrum, V 91 

 sublatum, Cosmarium, IV 21 

 sublobata, Ursinella, II 73 

 sublobatum, Cosmarium, II 73 



Euastrum, II 73 



var. crispulum, II 72 



var. dissimile, II 74 



var. subdissimile, II 74 

 subnotabile, Cosmarium, III 263 

 subnotabilis, Ursinella, III 263 

 subnudibrachiatum, Staurastrum, V 



91 



subochthodes, Cosmarium, III 6 ; IV 6 

 suboctangulare, Penium, I 81 

 suborbiculare, Cosmarium, III 173 



- Staurastrum, IV 159 

 suborbicularis, Ursinella, III 174 

 subortogonum, Cosmarium, III 86 

 subpalangula, Cosmarium, III 109 



Dysphiiictium, III 109 

 subpronum, Closterium, I 175 



var. lacustre, I 176 

 subprotumida, Ursinella, III 231 

 subprotumidum, Cosmarium, III 231 



var. Gregorii, III 232 

 subpunctulatum, Cosmarium, III 209 



- Staurastrum, IV 182 

 subpygmaBiim, Staurastrum, IV 162 



var. subangulatum, IV 163 

 subquadrans, Cosmarium, II 178 

 subquadrata, Ursinella, III 57 

 subquadratum, Cosmarium, III 57 

 subramosum, Cosmocladium, V 201 

 subrectum, Closterium, I 117 

 subrefractum, Staurastrum, V 86 

 Subreinschii, Cosmarium, II 58 

 subreniforme, Cosmarium, III 243 

 subreniformis, Ursinella, III 243 

 subretusiforme, Cosmarium, II 180 

 subscabrum, Staurastrum, V 82 



f. scabrior, V 83 

 subspeciosa, Ursinella, III 252 

 subspeciosum, Cosmarium, III 252 



var. effigiatum. III 253 



var. validius, III 253 

 substriatum, Cosmarium, III 224 

 Subtholiforme, Cosmarium, var. IMalin 



vernianuin, III 199 



