166 



A CATALOG OF ILLINOIS ALGAE 



meneghiniana, 37 



michiganiana, 38 



ocellata, 38 



operculata, 38 

 Cylindrocapsa, 77 



amoena, 154 



geminella, 77 

 V. minor, 77 

 Cylindrocapsaceae, 4, 77 

 Cylindrospermum, 27 



licheniforme, 27 



majus, 27 



muscicola, 27 

 Cymatopleura, 66 



apiculata, 67 



elliptica, 66 

 V. hibernica, 66 

 f. spiralis, 66 



hibernica, 66 



solea, 66 



V. apiculata, 67 

 V. subconstricta, 67 

 V. vulgaris, 67 



spiralis, 66 

 Cymbella, 61 



aequalis, 61 



affinis, 61 



amphicephala, 62 



anglica, 62 



aspera, 62 



cistula V. maculata, 62 



cuspidata, 62 



cymbiformis, 62 



ehrenbergii, 62 



gastroides, 62 



gracilis, 62 



lacustris, 62 



laevis, 62 



lanceolata, 62 



leptoceros, 62 



maculata, 62 



naviculiformis, 62 



parva, 62 



prostrata, 63 



rotundata, 63 



stromatophora, 63 



triangulum, 63 



tumida, 63 



turgida, 63 



ventricosa, 63 

 Cymbellaceae, 4, 61 



Dactylococcus, 107 

 infusionum, 107 

 Debar ya decussata, 132 



Denticula, 64 



tenuis, 64 

 Desmidiaceae, 4, 133 

 Desmidium, 139 

 aptogonum, 139 

 grevillei, 139 

 swartzii, 139 

 Diatoma, 42 

 anceps, 42 



elongatum v. tenuis, 42 

 hiemale, 42 

 V. genuina, 42 

 V. mesodon, 43 

 vulgare, 43 

 Diatomaceae, 4, 42 

 Dichotomosiphon, 117 



tuberosus, 117 

 Dictyosphaerium, 107 

 ehrenbergianum, 107 

 pulchellum, 107 

 Dimorphococcus, 108 



lunatus, 108 

 Dinobryon, 35 

 bavaricum, 35 

 cylindricum, 35 

 V. angulatum, 154 

 V. divergens, 35 

 V. palustre, 35 

 V. pediforme, 36 

 V. schauinslandii, 154 

 divergens, 35 

 elongatum, 35 



V. undulatum, 154 

 pediforme, 36 

 protuberans, 36 

 sertularia, 36 

 V. alpinum, 154 

 V. angulatum, 154 

 V. divergens, 154 

 V. protuberans, 36 

 V. stipitatum, 154 

 V. thyrsoideum, 36 

 V. undulatum, 154 

 sociale, 36 



V. americanum, 36 

 stipitatum v. americanum, 36 

 V. bavaricum, 35 

 Dinoflagellatae, 4, 142 

 Dinophyceae, 4, 142 

 Diploneis, 51 

 elliptica, 51 

 puella, 51 

 Docidium trabecula, 141 

 Draparnaldia, 79 

 acuta, 79 



