1922] 
contractum, 221; Corbula, 221, 
crenatum, 221; Cucumis, 222, 
Cucurbita, 222; dentatum, 222; 
depressum, 222; exiguum, var. 
subrectangulum, 222; galeritum, 
222; granatum, 222; Hammeri, 
222; intermedium, 222; laeve, 
222; latifrons, 222, Meneghinii, 
222; modestum, 222; monili- 
forme, 222; var. panduriformis, 
222; Naegelianum, 222; octhodes, 
. 222; orbiculatum, 222; ornatum, 
222; orthostichum, 222; ovale, 
222; pachydermum, 222; perfora- 
tum, 222; Portianum, 222; protrac- 
tum, 222; pseudobroomei, 222; 
pseudoconnatum, 222; pseudopy- 
ramidatum, 223; punctulatum, 
223; pygmaeum, 223; var. Schleip- 
hackianum, 223; pyramidatum, 
223; quadratum, forma Willei, 
223; quadrum, 223; reniforme, 
223; repandum, forma minor, 
223; Sinostegos, 223; speciosum, 
223; sphalerostichum, 223; sub- 
cucumis, 223; subdepressum, 223; 
suborbiculare, 223; subtumidum, 
223; sulcatum, 223; tetraophthal- 
mum, 223; Thwaitesii, 223; tri- 
lobulatum, 223; triplicatum, 223; 
tumidum, 223; Turpinii, 223; 
undulatum, 223, var. minutum, 
223, var. Wollei, 223; viride, 224. 
Cosmocladium, 240; saxonicum, 
240. 
Crataegus rotundifolia, 50. 
Cryptotaenia, 93; canadensis, 93. 
Curly Grass, 159. 
Cuscuta arvensis, 185; Cephal- 
anthi, 202; compacta, 154; Gro- 
novii, 201, 202, var. latiflora, 
202, var. latifolia, 202, o vul- 
givaga, 201, var. vulgivaga, 202; 
Saururi, 202; vulgivaga, 201. 
Cyanophyceae, 51. 
Cylindrocystis, 216; 
216. 
Cylindrospermum majus, 103, 105. 
Cynanchum, 236; nigrum, 236. 
Cynodon Dactylon, 242. 
Cynoglossum boreale, 118. 
Cyperus dentatus, 162; flavescens, 
98 
Brebissonii, 
Cypripedium arietinum, 187. 
Cystopteris fragilis, var. Mackauyi, 
159. 
Cytisus scoparius, 176. 
Index 
247 
Danthonia compressa, 98; sericea, 
98. 
Daphne Mezereum, 177. 
Daphnia, 51. 
Dasya elegans, 2. 
Daucus, 93; Carota, 93. 
Deane, W., Reports on the Flo- 
ra of the Boston District, 
AXXWV 92 ERR 10, 
XXXVII. 231; Vaccinium atro- 
coccum, var. leucococcum: A Cor- 
rection, 228. 
Decodon verticillatus, var. laevi- 
gatus, 177. 
Decumaria barbara, 150. 
De Leucojum aestivum in, 
144. 
Desmidium, 240; aptogonum, 240; 
Baileyi, 240; cylindricum, 241; 
Swartzii, 241. . 
Desmids, 213; of Connecticut, 
Preliminary Report on the, 213, 
236. 
Deyeuxia dubia, 144; Langsdorfii, 
143; Macouniana, 143; Porteri, 
143, 144. 
Diapensiaceae, 231. 
Dicentra canadensis, 116. 
Dichothrix, 105. 
Dicranum fulvum, 122; fuscescens, 
122; longifolium, 122; montanum, 
122; spurium, 122; viride, 122. 
Dictyosphaerium Ehrenbergianum, 
108. 
Digitalis ambigua, 119. 
Digitaria filiformis, 185, 241. 
Dioscorea quaternata, 149. 
Diospyros, 233; virginiana, 233. 
Distichlis spicata, 161. 
Ditrichum lineare, 122. 
Docidium, 219; Baculum, 
undulatum, 219. 
Drepanocladus, 214. 
Drosera longifolia, 57, 87. 
Dryopteris simulata, 111. 
219; 
Eames, E. H., Additions to the 
Flora of Connecticut, Series 2, 
HL 
Ebenaceae, 233. 
Echinochloa Walteri, 86. 
Ecological Polymorphism in Enter- 
omorpha crinita, 50. 
Elatine americana, 82; minima, 88, 
177, 185. 
Eleocharis arenicola, 24-26; capi- 
tata, 24, 83, 86, var. dispar, 61; 
