1920] 
Index 19 
ie. 
INDEX TO VOLUME 22. 
New scientlfic names are printed in full face type. 
Abies balsamea, 133. 
Abutilon, 72; Theophrasti, 72. 
Acer pennsylvanicum, 134; rubrum, 
110, 130, 134; saccharum, 137; 
spicatum, 130, 134. 
Achillea Millefolum, 136. 
Additional Notes on Amelanchier, 
146. 
Adiantum pedatum, 80, 83, 90, 123; 
peltatum, 123. 
Aetopteron, 180. 
Agropyron tenerum, 92. 
Agrostemma Githago, 137. 
Agrostis alba, var. maritima, 136, 
var. vulgare, 136; hyemalis, 133, 
136; jamaicensis, 103; perennans, 
133. 
us genevensis, 193. 
Alder, 132. 
Allen, M. E., The supposed generic 
Character of Naumburgia, 193. 
Alnus ineana, 132, 134, 135; mollis, 
134. 
Alopecurus geniculatus, var. aristu- 
latus, 138. 
Alsinopsis, 180. 
Althea, 73; officinalis, 73. 
Amaranthus retroflexus, 137. 
Ambrosia artemisiifolia, 137. 
Amelanchier, 110, 146; Additional 
Notes on, 146; Bartramiana, 149; 
canadensis, 147, 148, var. obovalis, 
148, var. oligocarpa, 147; Fern- 
aldii, 149; florida, 151; grandi- 
flora, 149-151; ^ humilis, 151; 
huronensis, 150, 151; intermedia, 
147, 148; laevis, 134, 148, 149, 
151; oblongifolia, 147, 148; obov- 
alis, 148; sanguinea, 150, 151, var. 
gaspensis, 149, forma grandiflora, 
149, 150, var. grandiflora, 149; 
stolonifera, 149. 
America, Some Variations of Carda- 
mine pratensis in, 11. 
American Ammophila, 70; Ceras- 
tiums of the Section Orthodon, 
Studies of some of the boreal, 169; 
Varieties of Pyrola chlorantha, 49. 
Ammophila, American, 70; arenaria. 
70, 71, var. arundinacea, 70; 
breviligulata, 71. 
Amsinckia Douglasiana, 111. 
Anacharis, 19; Alsinastrum, 18-20, 
27; canadensis, 25, 29; Nuttallii, 
22, 29. 
Anaphalis margaritacea, 134. 
Andromeda glaucophylla, 38, 41, 44, 
46, var. iodandra, 46. 
Anemone canadensis, 92; riparia, 49. 
Anoda, 73; triangularis, 73. 
Antennaria, 111, 138, 141; alpina. 
138-142, and A. carpathica, 138, 
var. canescens, 140, 8 canescens, 
141, var. corymbosa, 140, var, 
Friesiana, 140, var. glabrata, 140, 
var. ungavensis, 140; alsinoides, 
142; arnoglossa, 142; canadensis, 
136; carpathica, 138, 139, 141, 142, 
A. alpina and, 138, var. lanata, 142, 
var. pulcherrima, 142; fallax, 142; 
glabrata, 140; labradorica, 140; 
lanata, 141, 142; monocephala, 140; 
mucronata, 141; neglecta, var. sim- 
plex, 111; neodioica, 142; pulcher- 
rima, 142; umbrinella, 141. 
Anthemis Cotula, 137. 
Anthoxanthum odoratum, 136. 
Apocynum androsaemifolium, 
Aquilegia saximontana, 195. 
Arabis alpina, var. glabrata, 140; 
hirsuta, var. glaberrima, 140; pe- 
traea, var. glabra, 140. i 
Araceae, 89. 
Aralia, 129; hispida, 134, 152, 153, 
A teratological Specimen of, 152; 
nudicaulis, 129, 130, 134. 
Arbor Vitae, 40, 130. 
Arctostaphylos alpina, 37, 44, 46; 
rubra, 46. 
Arenaria groenlandica, 38, 48; lateri- 
flora, 93; tenuifolia, 180. 
Arethusa bulbosa, 43, 47, 137. 
Aronia, 48. 
Arundo arenaria, 71. 
136. 
Aes Black, 131, 132; Mountain, 
Asparagus officinalis, 136. 
Aspen, 131. 
Aspidium Boottii, 42, 48; cristatum, 
133; noveboracense, 133; spinu- 
losum, 38, 42, 48, 133, var. inter- 
medium, 48, 133; Thelypteris, 135. 
