1921] 



Inch 



303 



INDEX TO VOLUME 23. 



New scientific names are printed in full face type. 



Abies balsamea, var. phanerolepis, 

 188. 



Acer, 172; rubrum, var tridens, 102. 

 151. 274. 



Achillea Millefolium, 95. 



Acrospermum, 183, 184. 



Additions to the Flora of Isle au 

 Haut, 26; to the Flora of Mount 

 Desert, Maine, 65. 



Afzelia 3. 



Agalinus, 138; neoscotica, 139, 

 161, 290; paupercula, 139, var. 

 neoscotica, 139. 



Agarics, 88. 



Agrimonia gryposepala, 146, 272; 

 striata, 272. 



Agropyron, 102; acadiense, 165, 

 232; caninum, forma glaucum, 

 232, var. tenerum, 232; pungens, 

 165, 232, var. acadiense, 232; 

 repens, 102, var. pilosum, 232; 

 tenerum, 232. 



Agrostis elata, 155, 229; hyemalis, 

 155, var. elata, 229, 230, var. 

 geminata, 155, 230; perennans, 

 155, 230; perennans elata, 229. 



Alehemilla vulgaris, 94, 272. 



Alcott, Herbarium of Rev. W. P., 

 47. 



Alder, Black, 109. 



Alga, 70. 



Alnus incana, var. hypochlora, 257. 



Alopeeurus aristulatus, 229; genic- 

 ulate, 95, 229, var. aristulatus, 

 229, var. microstachyus, 229. 



Amaryllidaceae, 162. 



Ambrosia trifida, 298. 



Amelanchier 302; amabilis, 48, 

 72, a new Name, 48, An extended 

 Range for, 71; Bartramiana, 136; 

 canadensis, 136, 170, 198, 267, 

 300; grandiflora, 48, 71, 72; inter- 

 media, 103, 267; laevis, 198, 

 forma nitida, 267, var. nitida. 

 267; oblongifolia, 103, 198; san- 

 guinea, 72, stolonifera, 130, 135, 

 138, 266, var. lucida, 267. 



American Elm, 91; Variations of 

 Silene acaulis, 119. 



Ames, O., Notes on New England 

 Orchids, — I. Spiranthes, 73. 



Ammophila breviligulata, 230. 

 Amphicarpa monoica, 273. 

 Anabaena, 252; spiroides, 253, var. 



crassa, 252, 253. 

 Andromeda glaucophylla, 98. 

 Ankistrodesmus falcatus, 66. 

 Antennaria, 98; appendiculata, 



295; canadensis, 296, 297, 29S; 



neglecta, 296; neodioica, 98, 



296, 297, var. chlorophylla, 296, 



297, var. grandis, 98, 105, 296; 

 Parlinii, 98; petaloidea, 295, 296, 

 var. noveboracensis, 296, var. 

 subcorymbosa, 103, 295, 296. 



Anthoceros crispulus, 284; punct- 

 ata, 284. 



Apios tuberosa, 147, 273. 



Aplostemon, 24; bracteatum, 24. 



Apocvnum cannabinum, 288; medi- 

 um, 27, 288. 



Aralia, 117; hispida, 117; nudi- 

 caulis, 117, var. elongata, 117; 

 racemosa, 117, 170, 277. 



Araliaceae, 117. 



Arbor- Vitae, Gray Pine and, 247. 



Arceuthobium pusillum, 97, 257. 



Arctium nemorosum, 299. 



Arctostaphvlos Uva-ursi, var. co- 

 actilis. 278. 



Areas, Third Report of the Commit- 

 tee on Floral, 209. 



Arcnaria groenlandica, var. glabra, 

 172; peploides, var. robusta, 204. 



Arethusa, 79, 159; bulbosa, 103. 

 126, 132, 149. 



Arisaema pusillum, 136; quinata, 

 136; triphyllum, 136, 238, var. 

 pusillum. 136, var. Stewardsonii, 

 136, 238. 



Arnoseris minima, 299; pusilla, 

 142, 299. 



Aronia, 266. 



Artemisia Stelleriana, 298. 



Arum quinatum, 136. 



Asclepias incarnata, 135, 160, 288, 

 var. neoscotica, 288, var. pul- 

 chra, 135, 288; pulchra, 135. 



Ash, White, 91. 



Ashe, \V. \Y., Notes on Rhododen- 

 dron, 177. 



Aspidium marginale, 186; sim- 



