1907] 
subsalinum 135; Terryanum, 129, 
134, Wansbeckii, 134. 
Pleurostauron acutum, 134. 
Pleurotaenium, 101; acutum, 126; 
constrictum, 101, 102, 105, 106; 
coronatum, 102, 106, var. fluctua- 
tum, 102, var. nodulosum, 102; 
Ehrenbergii, 102, 103, 106, var. 
elongatum, 103, var. undulatum, 
103; indicum, 104; maximum, 102, 
104: nodosum, 101, 102, 105, 106; 
rectum, 104; subgeorgicum, 102, 104, 
106; Synopsis of the New England 
Species of, 101; Trabecula, 102, 103, 
106, forma clavatum, 104, forma 
granulatum, 104, var. rectum, 104; 
truncatum, 102, 103, 106; verruco- 
sum, 101, 102, 105, 106. 
Pneumaria, 55. 
Poa, 157; alpina, 159; laxa, 156, 159, 
166; Sandbergii, 159. 
Podocystis adriatica, 
cana, 137. 
Podosira dubia, 140. 
Podostemon ceratophyllus, 220, in 
Vermont, Rediscovery of, 220. 
Polanisia trachysperma, 75. 
Polemonium Van Bruntiae, 75. 
Polygala Nuttallii, 121; polygama, 121. 
Polygonaceae, 37. 
Polygonales, 37. 
Polygonastrum, 53. 
Polygonum acre, 119; arifolium, 121; 
Careyi, 119; dumetorum, var. scan- 
dens, 119; hydropiperoides, 119; 
pennsylvanicum, 121; Persicaria, 
121; punctatum, 121; sagittatum, 
121; viviparum, 154, 156. 
Polymnia, 62, 63; canadensis, 62. 
Polypodiaceae, 82. 
Polypodium, 82; vulgare, 82. 
Polystichum, 83, 174; acrostichoides, 
83, var. incanum, 83, Schweinitzii, 
83; Braunii, 154; Lonchitis, 158, 190; 
scopulinum, 158, 167, 174, 188. 
Polytrichum, 64; gracile, 64, in Maine, 
64 
137; 
ameri- 
Pongelion, 54. 
Pontederia cordata, 121, var. lancifolia, 
121. 
Portulaca, 50. 
Portulacaceae, 50. 
Potamogeton lucens, var. connecticu- 
tensis, 74; praelongus, 63. 
Potentilla fruticosa, 12; nivea, 162; 
palustris, 162, 189; Robbinsiana, 
162; tridentata, 156. 162, 169. 
Preferences of certain alpine and sub- 
alpine Plants, Soil, 149. 
Index 
247 
Preliminary Lists of New England 
Plants, —X X, Sparganiaceae, 86. 
Prenanthes Boottii, 154, 156, 164, 166; 
trifoliolata, var. nana, 164, 169, 
171, 191. 
Primula americana, 16; denticulata, 
47; erosa, 47; farinosa, 15, in north- 
eastern America, Variations of, 15, 
subsp. eufarinosa, var. genuina, 15, 
var. americana, 15, var. incana, 
16, var. macropoda, 16, 163, 167, 
217, on the Maine Coast, 217; incana, 
16; mistassinica, 163, 167, 172. 
Primularia cashmiriana, 47. 
Protococcus miniatus, 198. 
Pseudinga, 37. 
Pseudoauliscus radiatus, 139. 
Pseudoeunotia flexuosa, 138, bicap- 
itata, 138; lunaris, 138. 
Pseudofumaria, 54. 
Psilosanthus, 55. 
Pteridophyta, 36, 152, 157, 187. 
Pteris, 82; aquilina, 82. 
Pteropsiella, 68. 
Purple Raspberry, 5. 
Pycnanthemum, 55. 
Pyrola grandiflora, 24, 162, 190; mi- 
nor, 154. 
Pyrus, 202; americana, 63, 203; 
americana x arbutifolia, 202. 
Pyxilla baltica, 139. 
Quebec and New Hampshire, The Al- 
pine Rhinanthus of, 283. , , 
Quercus ilicifolia, 60, 61; prinoides, 
60, 61, var. rufescens, 61; Prinus, 
12. 
Quisqualis, 51. 
Racomitrum lanuginosum, 173. 
Radix, 51. 
Ramondia, 38. 
Rand, E. L., Arceuthobium pusillum 
at Mt. Desert, 75. : 
Rangeley Region, Arceuthobium, in 
the, 28. 
Ranunculus acris, subsp. Friesianus, 
40; Allenii, 161, 167; Boreauanus, 
39; pygmaeus, 161, 167. 
Raphanistrum Raphanistrum, 51. | 
Raphoneis amphiceros, 137; belgica, 
137, var. intermedia, 137; gemmi- 
fera, 137; Surirella, 138. 
Raspberry, Black, 4; Flowering, 5; 
Purple, 5; Red, 4, Sow-teat, 5. 
Razoumowskia, 54. 
Reboulia hemisphaerica, 73. 
Record of Color Varieties of Gratiola 
at Westfield, a clerical Error, 195. 
