1911] 
Index 
255 
INDEX TO VOLUME 13. 
New scientific names are printed in full face type. 
Abies balsamea, 138. 
Acer circinatum, 190; rubrum, 91, 
139; Saccharum, 141, 148. 
Acnida tuberculata, 89. 
Acrochaetium, 186;  Dasyae, 186; 
Dictyotae, 186;  Dufourii, 187; 
flexuosum, 186; Hoytii, 186; mini- 
mum, 186. 
Actaea rubra, 125, 126. 
Additions to the Description of 
Streptopus longipes Fernald, 237. 
Adiantum, 134, 141; pedatum, 141, 
147, 161, var. aleuticum, 118, 132, 
137, 141. 
Agarics, 57. 
Agrimonia, 18. 
Agropyron caninum, 89; pungens, 
178; tenerum, 89. 
Agrostis alba, var. 
canina, 30, 70. ; 
Ahnfeldtia plicata, 187, forma fur- 
cellata, 187. 
Aigeiros deltoides, 12, 
giniana, 12, 198. 
Alchemilla, 117, 124; officinalis, 110. 
Aletris farinosa, 179. 
Algae, Notes on,— X, 184. 
Alisma Plantago-aquatica, 141. 
Alliaria officinalis, 89. 
Alnus alnobetula, 216; 
220; mollis, 216; 
viridis, 216. 
Amanita, 57, 60, 62; cariosa, 60, 61, 
66; spissa, 61. 
Amanitopsis strangulata, 61. 
Amaranthus blitoides, 89. 
Amateur botanical Illustrating, 93. 
Amblystegium riparium, 44; vacillans 
44 
aristata, 177; 
199; vir- 
maritima, 
rugosa, 91; 
Ambrosia psilostachya, 33. 
Amelanchier oligocarpa, 138. 
America, Arrhenatherum elatius, 
tuberosum in, 207; Cornus can- 
adensis, var. intermedia in eastern, 
107; Erucastrum Pollichii, adven- 
tive in, 10; The Variations of 
Lathyrus palustris in eastern, 47. 
Ammophila arenaria, 128, 135, 140. 
Anacamptodon splachnoides, 45, 46. 
Anaphalis margaritacea, 25, 26, var. 
occidentalis, 25-27; Some boreal 
Species and Varieties of Anten- 
naria and, 23. 
Andromeda, 114; glaucophylla, 54, 
217, 220; polifolia, 217, 220. 
Anemone, 18; canadensis, 141; mul- 
tifida, 148; narcissiflora, 222, 223; 
parviflora, 117, 129, 223; riparia, 
141, 148, 161; virginiana, 218. 
Angelica atropurpurea, 123. 
Another Station for Centaurea dif- 
fusa, 100. 
Antennaria, 23, 129; alpina, 24, 25, 
127, var. cana, 24, 25, 127, 129, 137; 
and Anaphalis, Some boreal Species. 
and Varieties of, 23; canadensis, 
23, 25; carpatica, 24, var. humilis, 
24; eucosma, 23, 24, 129, 130, 138; 
lanata, 24; neodioica, 23, 25, 139, 
var. gaspensis, 71; Parlinii, 25; 
petaloidea, 23; plantaginifolia, 24, 
25; pulcherrima, 24. 
Anthemis arvensis, var. agrestis, 18. 
Anthyllis, 240; Vulneraria, 240; at 
Cromwell, Connecticut, 240. 
Apocynum  androsaemifolium, 18, 
139; cannabinum, 148. 
Apple, Baked, 123. 
Aquilegia, 18. 
Arabis, 37; albida, 123; alpina, 119, 
123; brachycarpa, 148; Drum- 
mondi, 37; Holboellii, 219; laevi- 
gata, 37, 38; A new, 37; virginica, 
91; viridis, 38. 
Aralia, 18; hispida, 139, 146, 149. 
Arbor Vitae, 115, 142. 
Arctium, 18. 
Arctostaphylos alpina, 117, 123, 136. 
Arenaria, 180; arctica, 118, 134, 136; 
ciliata, 118, var. humifusa, 118, 
134; groenlandica, 180; juni- 
perina, 117; litorea, 117; nor- 
vegica, 118; peploides, var. ro- 
busta, 135, 140; verna, var. 
propinqua, 117. 
Arethusa, 113, 114; bulbosa, 139. 
Arisaema, 18; Dracontium, 78; tri- 
phyllum, 78, 141. 
