1907] 
Index 
235 
INDEX TO VOLUME 9. 
New scientific names are printed in full face type. 
Abies balsamea, 158, 169; nigra, 173. 
Acanthospermum, .26; australe, 26, 
at Lawrence, Massachusetts, 26. 
Acer coccineum, 116; eriocarpum, 
116; glaucum, 116; microphyllum, 
116, 117; rubrum, 116, 117, subsp. 
microphyllum, 116, var. tomento- 
sum, 116, var. tridens, 116, 117; 
saccharinum, 116; semi-orbiculatum, 
116, 117; tomentosum, 116, 117. 
Achillea borealis, 164, 191. 
Achnanthes brevipes, 136; curviros- 
trum, 136; longipes, 136; manifera, 
136; subsessilis, 136. 
Achnanthidium flexellum, 131, 136. 
Acosmus, 44. 
Acroxis, 18. 
Actinella punctata, 138. 
Actinocyclus Barkleyi, 129, 139; cras- 
sus, 139; Ehrenbergii, 139; Ralfsii, 
139; subtilis, 139;  tenuissimus, 
139; triradiatus, 139. 
Actinoptychus, 130; undulatus, 140; 
velatus, 140. 
Adenoscilla, 37. 
Adiantum, 27, 82, 174; Capillus- 
Veneris, 39; pedatum, $82, var. 
aleuticum, 155, 158, 167, 174. 
Adicea, 54. 
Adnaria, 54. 
Adopogon, 55. 
Aecidium, 195. 
Agaricus octogesimus nonus, 51. 
Ageratum, 50. 
Agrostis borealis, 156, 158, 169, 190; 
diffusa, 20, 21; filiformis, 19; foli- 
osa, 19; frondosa, 19; lateriflora, 
18, var. filiformis, 19; mexicana, 18, 
19; racemosa, 22;  setosa, 22; 
sobolifera, 18; sylvatica, 18, 20; 
tenuiflora, 18. 
Ailanthus, 54. 
Alacospermum, 54. 
Alchemilla, 92; alpina, subsp. eual- 
pina, 47; pratensis, 92, found at 
Westford, Massachusetts, 92. 
Alexitoxicon, 40. 
Algae, 36, 77, 78; The Basis of Nomen- 
clature for, 77; Causes of Variation 
in Color of some red, 90; Red, 90; 
Some new green, 197. 
Alicularia, 58; Geoscyphus, 57; minor, 
57; Roteana, 58; scalaris, B minor, 
57, 58. 
Allium tricoccum, 12; vineale, 12. 
Alnus, 18; alnobetula, 153; crispa, 
153, 156, 160, 190; incana, 48; 
lanuginosa, 48; mollis, 160. 
Alpine Rhinanthus of Quebec and 
New Hampshire, 23; Variety of 
Houstonia caerulea, 209. 
Amaryllidaceae, 50. 
Amelanchier, 179;  oligocarpa, 
rotundifolia, 223; spicata, 223. 
America, The Genus Suaeda in north- 
eastern, 140; Salicornia europaea 
and its Representatives in eastern, 
204; Some new Willows of eastern, 
221; Variations of Primula farinosa 
in northeastern, 15. 
American Diervillas, Flower Color of 
the, 147. 
Ammophila arenaria X Calamagrostis 
epigeios, 42; arundinacea, 218; X 
baltica, 42. 
Amphicarpaea, 54; Pitcheri, 12. 
Amphiprora, 130; alata, 135; con- 
spicua, 135; lepidoptera, 135, var. 
pusilla, 135; maxima, 135; ornata, 
135; pulehra, 128, 135; vitrea, 135. 
Amphiptetras, 130;  antediluvianus, 
139. 
Amphora, 128, 130; cingulata, 135; 
Clevei, 135; cymbifera, 135; erebi, 
135; Eulensteinii 135; intersecta, 
135; levis, 135; obtusa, 136; ovalis, 
136; proteus, 135. 
Amsinckia, 55. 
Anaphalis margaritacea, 122. 
Anarrhinum, sect. Anarrhinum, 47. 
Andromeda glaucophylla, 163, 169, 
189; tetragona, 182. 
Andropogon macrothrix, 40; ternatus, 
subsp. macrothrix, 40. 
Anemone multifida, 161, 166; parvi- 
flora, 161, 166, 183, 190; riparia, 161. 
Anemonella, 151; thalictroides, 151. 
Angiospermae, 36. 
156; 
