INDEX 



Achlva. 1, 2. 3. 4.5. 6. 7. 9. 'o. i". 88, 90, 91, 



95, 96, 164,166, 183; key to the species, 



98 

 aiiK-rii-ana, 5, 97, 99, loi, HI, 117,119, 



120, 142, 147 

 anicricanavar.cambrica,l,95, 97, 99, 131, 



139 

 apiculata, 4, 13, 14, 100, 102, 123, 127, 



128, 129, 186 

 apiculata var. prolifica, 4, 100, 102, 124, 



127 

 aplanes, 6, 58, 98, 99, 101, 117, 143 

 asterophora, 139 

 Braunii, 76, 77, 78 



caroliniana, .S, 6, 7, 14, 98, 100, loi, 122 

 colorata. 5, 6, 14, 86, 98, 102, 103, 107, 



108, 134, 139 

 conspicua, 4, 97, 100, loi, 113, 117, 131, 



186. 187 

 contorta, 147 

 cornuta. 99, loi, 110 

 deBaryana, i, 5, 6, 95, 96, 97, 98, 99, 



loi. 112, 117, 132, 141 

 deBaryana var. americana, 112. 

 deBaryana var. intermedia, 118, 119, 142 

 decoraia, 139 

 dioica, no, 147 

 dubia, 4, 6, 100, loi, 135, 149 

 flagellata, 4, 6, 7, 13, 14,97,98,99, loi, 



116, 119. 165. 1S4, 186 

 gloniprata, 6, 14, 96, 100 102, 133 

 gracilipes, 100, 129, 130, 132, 142 

 Hoferi, 98, loi, 145 

 hypog>na, 7, 14, 63, 93. 102, 103 

 imperfecta, 9, 92, 97, 98, 99, loi, 1 12, 115, 



117, 118, 122, 143, 184 

 intermedia, 49, 50 



Klebsiana, 7, 9, 98, 99, loi, 120, 133 



leucosperma, 146 



lignicola, 6, 106, 107 



mcgasperma, 100, loi, 128 



Nowickii, 147 



oblongata, 100, loi, 113, 132 



oblongata var. globosa, 100, loi, 133 



ocellata, 147 



oitlifera, 147 



oligacantha, 100, 102, 144, 145, 146 



Orion. 4, 95, 98, 99, loi, 112, 165 



papillosa, 99, 102, 109 



paradoxa, 4, 82, 90, 91, 93, 96 



penetrans, 147 



polyandra de Bary, o, 9. 96, 97, 98, 112, 



117, 119. 141, 142 

 polyandra forma Americana, 97, H2 

 polyandra Hildebrand, I, 3, .5, 6, 41, 95, 



100, loi, 113, 120, 129, 131, 132, 141, 



142. 145 

 prolifera. 6, 40, 58, 96, 98, 99. loi, 118, 



120, 143, 144, 146 

 proliferoides. 7, 13, 14, 96, 97, 98, 99, 



101, 115, 117, 118, 119, 144 

 racemosa, 2, 5. 6, 14, 63, 66, 81, 98, loi, 



103, 106, 108, log, 113, 134 



Achlya 



racemosa var. stolligera, 107, 108 



radiosa. 98, 102, 107, 134, 139 



recurva, 100, 102, 109, 144 



spinosa, 99, 102, 107, III, 134, 138 



stellata, no, in, 139 



Treleaseana, 79 



sp., 100, 137, 148, 165 

 Achlya parasitized by Aphanomyces, 164, 165 

 Achlyogeton solatium, 167 

 Alga, blue-green, parasitic on Saprolegnia, 36 

 Allomyces,"i6, 180, 181 



arbuscula, 182 

 Aphanomyces, i, 2, 3, 5, 14, 15, 17, 96, 160, 

 183; key to the species, 160 



coniger, 161, 166, 168 



hclicoides, 160, 168 



laevis, i, 160, 161, 163, 164, 166, 167, 168, 

 169 . 



norvegicus, 161, 166, 168 



parasitica, 15, 161, 165 



phycophilus, 161, 166, 167 



scaber, 161, 163, 164, 166 



stellatus, 7, 65, 161, 163, 166, 167, 168 

 Aplanes, 17, 76 



androgynus, 24, 76, 77, 80, 132 



Braunii, 77, 78 



Treleaseanus, 25, 61, 79, 132 

 Apodachlya, 12, 169, 172 key to the species, 

 172 



brachynema, 169, 170, 172, 173 



brachynema var. major, 170, 174 



completa, 170, 172 



punctata, 172, 173, 174 



pyrifera, 7, 169, 172, 1 73, 1 74 



pyrifera var. macrosporangia, 169 

 Apotlya brachynema, 173 



lactea, 76, 170 

 Araiospora, 2 



pulchra, 170 



spinosa. 170 

 Bacillus piscicidus bipolaris, 59 



salmonis pestis, 59 

 Blastocladia, 180, 182 



Pringsheimii, l8l^ 182 



prolifera, 181, 182 



ramosa, 181, 182 



rostrata, 181, 182 



strangulata, 181, 182 

 Blastocladiaceae, 16, 180 



Centroachlya, 96, 98 



Desmids, 161 

 Diatoms. 161 

 Diblci)haris, 179 



fasciculata, 180 



insignis, 180 

 Dictyuchus, 5, 10, 17, 91, 150, key to the spe- 

 cies 151 



carpophorus, 151, 157 



clavatus, 148 



Magnusii, 151, 153, 154 



199 



