INDEX, 



273 



Arachno, Phycastrum, V 151 



(Stenactinium), V 151 



- Staurastrum, V 151 



var. arachnoides, V 152 



var. curvatum, V 152 



var. tetracerurn, V 119 

 arachnoides, Staurastrum, V 152 

 Archeri, Sphaerozosma, V 2(.)S 

 Archeriana, Arthrodia, I 115 

 An-herianum, Closterium, I 115 



var. Cynthia, I 113 

 var. typicum, I 115 

 Aivherii, Docidium, I 213 

 Pleurotsenium, 1213 



- Staurastrum, V 155 

 Arctiscon, Staurastrum, 114: V 193 



- Xanthidiuni, \' l!i:{ 

 aivtoa, I 'rsinella, 11141 

 an-toum, Cosmarium, 1 1 [ 41 



f. minor, III 42 



var. tatricum, III 42 



var. typicum, UI 41 

 areuutum, Clostcrium, I 131 



- Stanrastrum, V 180 



var. Guitanense, V 180 

 var. subavicula, V l.Sl 

 var. vastum, V 181 



aristiferum, Staurastrum, V 18, 22 



var. protuberans, V 23 

 armatum. Cosmarium, IV 51 



Didymidium (Xanthidium) IV 52 

 Euastrum, IV 51 



- Schizacanthum, IV 52 



Xanthidium, IV 51 



var. Americanum, IV 52 



var. cervicorne, IV 55 



var. fissum, IV 54 



var. irregularius, IV 55 



var. supernumerarium, IV 52 



var. \Volleanum, IV 52 

 armigernm, Staurastrnm, V 191 

 armillare, Mixotsenium, V 235 

 armillatum, Cosmarium, III 167 



- Spondylosium, V 228 

 Armstrongianum, Euastrum, II 30 

 Arnellii, Cosmarium, III 205 



f. compressa, III 205 



- Staurastrum, V 79 



var. inornatum, V 80 



var. spiniferum, V 80 



- Ursinella, III 205 

 Arthrodesmus, I 27 ; IV 88 

 Arthrodia, 1110 

 articulatum, Xanthidium, V 188 

 Asexual reproduction, I 9 

 asperum, Cosmarium, III, 261 



Didymidium (Stanrastrum), V 74 

 Docidium, I 30, 31 



VOL. V. 



asperum, Gonatozygon, I 30, 31 



Leptocystinema, I 30 



- Staurastrum, V 74 



var. proboscidium, V 129 

 asphaerospora, Ursinella, II 163 

 asphserosporum, Cosmarium, II 163 



var. strigosum, II 164 

 attenuata, Arthrodia, I 169 

 attenuatum, Closterium, I 169 



- Cosmarium, III 118 

 Dyspbinctium, III 118 



attenuatus, Calocylindrus, III 118 

 Auhertianum, Spbaerozosma, V 207 



var. Archeri, V 208, 211 

 aversum, Staurastrum, IV 144 

 Aviciila. Staurastrum, V 39, 40, 125, 



172 



var. aciculiferum, V 171 



var. subarcuatum, V 41, 43 

 \ ar. vcrrucosum, V 41 



bacillare, Cosmarium, I 97 ; V 267 

 Didymidium (Staurastrum), V 84 

 Phyrastrum, V S \- 



- Staurastrum, \ 84 



var. obesum, V 84 



var. undulatum, V 85 

 bai-illaris, Binatella, \' 84 

 Baculum, Closterium, I I'.KJ 



Docidium, 1 193 



Penium, I 193 



Pleurotaanium, I 194 

 Baillyanum, Closterium, I 117 

 Balmacarense, Closterium, I 161 



f. minor, I 161 

 Bambusina, V 225 



bambusinoides, Sphasrozosma, V 226 

 harbaricum, Staurastrum, V 157 

 basilicum, Cosmarium, IV 44 

 Beckii, Cosmarium, III 238 

 Bennettii, Helierella, II 124 

 Berginii, Penium, I 75 



Berlini, Euastrum, V 264 

 bibrachiatum, Dichotomum, var. 

 cymatium, V 121 



Staurastrum,var. cymatium, V 121 

 Bicardia, Cosmarium, III 98 



Ursinella, III 98 



bicorne, Staurastrum, V 116, 117 

 bicornutum, Xanthidium, IV 63 

 bicrenatum, Cosmarium, IV 38 

 bicuneatum, Cosmarium, var. tatri- 

 cum, III 42 



bidens, Desmidiuni, V 32 

 bidentatum, Euastrum, II 39 



Staurastrum, V 34 

 Bienneanum, Staurastrum, IV, 135 



var. ellipticum, IV 137 



18 



