1920] 
New England, Brainerd & Peiter- 
sen’s Blackberries of, 185; A Euro- 
pean Primrose in, 143; The Genus 
Elodea in, 17; Plants, Prelimi- 
nary Lists of —X XVII. 80. 
New Hampshire, A new Digitaria 
from, 101; Soil Tests of Ericaceae 
and other reaction-sensitive Fam- 
ilies in northern Vermont and, 33. 
New Jersey, Regarding Gentiana 
Andrewsii in the Coastal Plain of, 
104. 
Nodding Pogonia, 55. 
North America, The Genus Galin- 
soga, 97. 
Northeastern Variety of Panicum, 
153. 
Northern Variety of Ranunculus his- 
pidus, 30. 
Norway Pine, 137. 
Note on Crepis biennis, Further, 192. 
Notes on Amelanchier, Additional, 
146; on Pogonia trianthophora, 
53. 
Nymphaea advena, var. variegata, 
136; microphylla, 138. 
Nymphaeaceae, 89. 
Oenothera pumila, 136. 
Onoclea sensibilis, 81, 82, 90, 135. 
Ontario, Stachys lanata in, 128. 
Ophrys, 181; spiralis, 180. 
Orchidaceae, 34, 47, 53. 
Orchids, 40, 42. 
Oregon, Crepis setosa in, 191. 
Orthostachys. 181. 
Osmunda cinnamomea, 82, 133, var. 
glandulosa, 82, 86; Claytoniana, 
82, 133; regalis, 132, 134, 135, 
var. spectabilis, 82. 
Osmundaceae, 80, 82. 
Oxals Acetosella, 134, 143, 144; 
americana, 143, 144, forma rho- 
dantha, 144;  corniculata, 136; 
montana, 143, 144, forma rho- 
dantha, 144. 
Panieum, 153, 182; albemarlense, 
182, 183, in Connecticut, 182; 
argyrostachyum, 103; badium, 104; 
boreale, 133, 134; capillare, 154; 
columbianum, 183;  curvinerve, 
103; depauperatum, 183; dichoto- 
miflorum, 153, 154, var. puritan- 
orum, 154, 155; Gattingeri, 153, 
154; glabrum, var. mississippiense, 
103; gracilimum, 101; huachucae, 
183; implieatum, 182, 183; lanu- 
Index 
203 
ginosum, var. siccanum, 183, 196; 
leucocomum, 104; lineare, var. miss- 
issippiense, 103; linearifolium, 183; 
northeastern Variety of, 152; phae- 
othrix, 104; sanguinale, 103, var. 
longiglume, 1. marginatum, 103, 
var. Simpsoni, 103; Simpsoni, 103; 
sphaerocarpon, 183; tennesseense, 
182; tsugetorum, 183; Tucker- 
manni, 153; villosissimum, 183. 
Paper Birch, 131. 
Parnassia caroliniana, 39, 42, 49. 
Peitersen, A. K. [Notice of Work], 
185. 
Pellaea, 88; atropurpurea, 81, 87, 
88; glabella, 81, 87, 88; gracilis, 49. 
Penobscot Bay Region, A Flora ot 
the, 91. 
Penstemon secundiflorus, 195. 
Phaeocephalum, 180, 181. 
Phalaris maritima, 71. 
Phegopteris, 91; Dryopteris, 
polypodioides, 38, 133. 
Philotria, 17; angustifolia, 25, 29; 
iowensis, 26, 29; linearis, 25; minor, 
22, 28; Nuttalhi, 24, 29; Planch- 
onii, 29; pratense, 136. 
Phragmites communis, 15. 
Phyllodoce coerulea, 37, 44. 
Picea canadensis, 133; rubra, 133. 
Pilularia, 89. 
Pine Jack, 130, 132; Norway, 137; 
Red, 130; White, 130. 
Pinus Banksiana, 33, 130, 133, 134; 
resinosa, 133; Strobus, 133. 
Pirola, 123. 
Pityrogramma, 114; triangularis, 
114-120, Varieties of, 113, var. 
Maxoni, 116, 118-120, var. pal- 
lida, 116, 119, var. viscosa, 115, 
117, 119; viscosa, 117. 
Plantago major, 136. 
Plants, Preliminary Lists of New 
England,—XXVII. 80; Some 
noteworthy Matinicus, 110. 
Poa annua, 136; laxa, 38; nemor- 
alis, 133; perennans, 135; pra- 
tensis, 136; trifolia, 136. 
Pogonia, Nodding, 55;  ophioglos- 
oides, 41, 47; trianthophora, 53, 
Notes on, 53. 
Polygala paucifolia, 32; forma ves- 
tita, 32 
Polygonum amphibium, 137; avicu- 
lare, 137, var. vegetum, 137; 
Convolvulus, 137; lapathifolium, 
137; Persicaria, 137; sagittatum, 
93. 
133; 
