222 
Aralia hispida, 201; nudicaulis, 199. 
Arbor Vitae, 56, 58—60. 
Archangelica Gmelini, 146; 
peregrina, 145, 146. 
Arenaria, 1-3, 5, 17, 18, 19; aizoides, 
6; alpina, 13, 15; anatolica, 6; 
arctica, 10, 14, 16; arenarioides, 
5; attica, 6; austriaca, 11; bi- 
flora, 13, 15, var. obtusa, 14; 
bryophylla, 5; campestris, 6; 
caucasica, 5; cerastioides, 5; 
Cossoniana, 7; cymifera, 5; 
dasyphylla, 6, var. sedoides, 6; 
decipiens, 6; dianthifolia, 6; 
dichotoma, 5;  diversifolia, 6; 
Funkii, 5; Gieseckii, 21; glabra, 
17-20, The specifie Identity of 
Arenaria groenlandiea and, 17; 
glaucovirens, 7; Grisebachii, 6; 
groenlandica, 16-20, and A. glabra, 
The specific Identity of, 17, var. 
glabra, 20; hirta, 21, a glabra, 21, 
a glabrata, 22, 8 pubescens, 21; 
Hookeri, 4; iberica, 5; interme- 
dia, 6; Jankae, 6; lanceolata, 11; 
lanuginosa, 3; laricifolia, 3, 11, 13, 
15, 16; leucocephala, 6; libanotica, 
6; macradenia, 4; makmelensis, 6; 
marcescens, 13, 15; montana, 6; 
musciformis, 5; obtusa, 7, 14, 15; 
obtusiloba, 13-16; occulta, 13; 
octandra, 11; paludicola, 3; 
papulosa, 7; platysperma, 7; 
polygonoides, var. obtusa, 7, 8 
oeculta, 13; propinqua, 9, 21; 
. pulvinaris, 6; quadrivalvis, 22; 
rimarum, 6; rubella, 22; saja- 
nensis, 3, 10-13, 15, The American 
Representatives of, 12;  scandi- 
naviea, 13; Schimperii, 6; spath- 
ulata, 5; sphagnoides, 6, 13; 
stellarioides, 7; stellata, 6; steno- 
petala, 13; striata, 16; stricta, 59; 
tenella, 12; tenuifolia, 10, 11; 
Thevenaei, 6; Tommasinii, 7; 
'The Unity of the Genus, 1; verna, 
9, 11, 16, 21, The American Varia- 
tions of, 21, var. equicaulis, 22, 
var. hirta, 13, 21, 22, var. propin- 
qua, 21, 22, var. propinqua, forma 
epilis, 21, 22, var. pubescens, 21, 
var. pubescens, forma epilis, 22, 
var. rubella, 21, 22; Villarsii, 11. 
Arethusa bulbosa, 118. 
Aronia atropurpurea, 119. 
Arrow Arum, 192. 
Arrowheads, 191. 
Arum, Arrow, 192. 
Asarum canadense, 200. 
145, 
Rhodora 
[DECEMBER 
Asclepias phytolaecoides, 201. 
Aspidium, 174, 177; angustum, 178; 
Boottii, 177; cristatum, 177, var. 
Clintonianum, 177; Filix-mas, 177; 
fragrans, 177, 192; Goldianum, 
177; marginale, 178, 200; nove- 
boracense, 178, 200; simulatum, 
178; spinulosum, 178, var. ameri- 
canum, 174, 178, var. concordia- 
num, 178, var. dilatatum, 174, var. 
dilatatum, forma anadenium, 174, 
178, var. intermedium, 178, 200; 
Thelypteris, 178. 
Asplenium, 174, 175; acrostichoides, 
175, 178; angustifolium, 175, 178; 
angustum, 175; asplenioides, 175; 
eyclosorum, 175;  Filix-foemina, 
175, 178; pyenocarpon, 178; Scolo- 
pendrium, 177, 179; Trichomanes, 
201; viride, 192. 
Aster, 75; acuminatus, 200; cordi- 
folius, 170; divaricatus, 200; 
ericoides, 170; nemoralis, 75, 143; 
patens, 202; prenanthoides, 202; 
puniceus, 170; undulatus, 170. 
Athyrium, 174, 175; acrostichoides, 
178; acrostichoideum, 178; an- 
gustifolium, 178; angustum, 178; 
ee 178; pyenocarpon, 
178. 
Avena, 76; Smithii, 76, 77; striata, 
76, 77; Torreyi, 76, 77. 
Aveneae, 76. 
Azalea viscosa, 119. 
Balsam Fir, 109. 
Balsaminaceae, 128. 
Banksian Pine, 44-49, 52, 65. 
Bash-Bish Falls, An Excursion to Mt. 
ee Massachusetts and, 
198. 
Bastard Spruce, 46. 
Batidaea, 89, 90; amplissima, 89; 
heterodoxa, 89; itascica, 91; per- 
amoena, 91; strigosa, 89, 92, 96, 
.Subsp. B. acalyphacea, 98, subsp. 
B. arizoniea, 98, subsp. B. cataphra- 
tica, 96, subsp. B. elegantula, 96, 
subsp. B. heterodoxa, 96, subsp. 
B. itascica, 91, 96, subsp. B. per- 
amoena, 91, 98, subsp. B. sub- 
arctica, 97. 
Bean, R. C., Field Trips of the New 
England Botanical Club, 1919, 143; 
Plans for 1919 Spring Field Trip 
of the New England Botanical 
Club, 86. 
Beech, 51. 
Bellflower, 107. 
