1908] 
Button-bush, 203; More teratolog- 
ical Forms of Trillium undulatum, 
214; Reports on the Flora of the 
Boston District,— II, 59, III, 128; 
Some teratological Forms of Trillium 
undulatum, 21. 
Decodon, 166. 
Delesseria denticulata, forma rostrata, 
116; Montagnei, forma rostrata, 
116; sinuosa, 116. 
Dentaria, 207; diphylla, 164; 
niata, var. integra, 84. 
Desmarestia, 133, 134; aculeata, 116; 
laci- 
dentieulata, var. rostrata, 115; 
viridis, 133, 134. 
Desmids, 97. 
Desmodium, 207; bracteosum, var. 
longifolium, 34;  canadense, 151, 
var. longifolium, 34, var. hirsutum, 
33; canescens, var. hirsutum, 33, 
var. villosissimum, 33. 
Diatoma anceps, var. capitata, 181, 
var. linearis, 182; hyemale, forma 
curta, 182, var. mesodon, 182. 
Diatoms, 179, Additional Lists of 
Connecticut, 179. 
Dictyota, 135; dichotoma, 134. 
Discovery of. Cryptogramma Stelleri 
in Maine, 35. 
Draba, 148; aurea, 148, in Rimouski 
County, Quebec, 148; borealis, 148; 
incana, 201. 
Drosera anglica, 201. = 
Dryopteris, 30;  Goldieana, 
celsum, 30. 
Dulichium arundinaceum, 136. 
subsp. 
Eames, A. J., Sparganium diversi- 
folium, var. acaule in Massachusetts, 
56. 
Eaton, A. A., Botanical Writings of 
the late, 211; In Memoriam, 209; 
Nomenclatorial changes in Isoétes, 
42; Note on Isoétaceae, 61. 
Eatonia glabra, 65; pubescens, 65. 
Ebony Spleenwort, 165. 
Echinacea pallida, 146. 
Echinella rotata, 106. 
Echinocystis lobata, 154. 
Echinodorus tenellus, 43. 
Echinomitrium pubescens, 185. 
Echinops sphaerocephalus, 152. 
Echinospermum Lappula, 172. 
Ectocarpus, 125. 
Eggleston, W. W., The Crataegi of the 
northeastern United States and 
Canada, 73. 
Elachista lubrica, 116. 
Index 
223 
Eleocharis acicularis, 136; acuminata, 
140; diandra, 136, 204, var. de- 
pressa, 138; Engelmanni, 136, 140, 
var. detonsa, 136, 140, 143; inter- 
media, 136, 140, var. Habereri, 140; 
interstineta, 136, 140; melanocarpa, 
136, 140; obtusa, 136, 140; olivacea, 
136; ovata, 136, 140; palustris, 
136, var. calva, 136, 140, var. 
glaucescens, 136, 140, var. vigens, 
136, 140; quadrangulata, 136; Rob- 
binsii, 136, 140; rostellata, 136, 141; 
tenuis, 136; Torreyana, 136, 141; 
tricostata, 141; tuberculosa, 136. 
Elodea canadensis, 38. 
Elymus arenarius, 144; hirsutiglumis, 
65; virginicus, var. hirsutiglumis, 65. 
Encyonema lunatum, 180;  ventri- 
cosum, 182, 183. 
Enteromorpha, 162; crinita, 115, 116, 
160, 162;  Hopkirkii, 160, 162; 
intestinalis, 160, 162, forma clavata, 
116, forma cylindracea, 116. 
Entophysalis, 162; granulosa, 162. 
Epilobium hirsutum, 152, 167. 
Epithemia argus, var. amphicephala, 
180; gibba, 180, var. ventricosa, 
180; turgida, 183; zebra, 183, var. 
proboscida, 180. 
Equisetaceae, 60. 
Equisetum, 60, 195, 207; arvense, 60; 
fluviatile, 60; hyemale, var. affine, 
60; limosum, 60; litorale, 60; scir- 
poides, 60; sylvaticum, 60. 
Eragrostis capillaris, 146; Purshii, 153. 
Erica, 173, 175, 176; dinerea, 178, 
179; tetralix, 173, 176, 178, 179. 
Eriophorum alpinum, 20; angusti- 
folium, 136, 138, 139, 141, var. 
majus, 136, 141; callitrix, 136, 141; 
Chamissonis, 141, var. albidum, 47, 
141; gracile, 136; latifolium, 139; 
opacum, 136, 141; paucinervium, 
47; polystachion, 138, 139; tenel- 
lum, 47, 136, var. monticola, 47, 
141; vaginatum, 141; virginicum, 
136, 141, var. album, 136; viridi-car- 
inatum, 136, var. Fellowsii, 136, 141. 
Erithrea, 54. 
Errata, 218. 
Erysimum cheiranthoides, 72; parvi- 
florum, 146. 
Erythraea, 54; calycosa, 54; spicata, 
54; texensis, 54. 
Erythronium, 129; americanum, 129. 
Erythrotrichia ceramicola, 134. 
Escharella variabilis, 44. 
Essex County, Massachusetts, А south- 
