246 
Panax nossibiensis, 43. 
Panicularia, 53. 
Panicum tennesseense, 208; Werneri, 
208. 
Papaver Rhoeas, 39. 
.Paralia sulcata, 140. 
Parietales, 37. 
Parnassia Kotzebuei, 162, 167; parvi- 
flora, 162, 189. 
Pease, A. S., Alpine Variety of Hous- 
tonia caerulea, 209. 
Pedicularis flammea, 163. 
Pelargonium zonale, 41. 
Pellaea atropurpurea, 187; 
74, 154. 
Penium, 227; annulare 228, 233, var. 
obesum, 233; Clevei, 228, 230, var. 
crassum, 230;  closterioides, 228, 
forma interrupta, 229; cruciferum, 
228, 232; curtum, 228, 232; cuticu- 
lare, 228, 230; Libellula, 228, var. 
intermedium, 229; var. interrup- 
tum, 229; margaritaceum, 228-230, 
var. punctatum, 231; minutum, 
228, 232, 233, var. elongatum, 233; 
Navicula, 228, 229; New England 
Species of, 227; phymatosporum, 
228, 231; polymorphum, 228, 231; 
spirostriolatum, 228, 231, var. api- 
culatum, 231. 
Pentagonia, 55. 
Peponia, 52. 
Peponium, 52. 
Peridermium, 194, 195; Cerebrum, 194; 
pyriforme, 194, and its probable 
alternate Host, 194. 
Periptera tetracladia, 139. 
Petasites trigonophylla, 155, 164, 191; 
vitifolia, 155, 164. 
Peyrousea, 38. 
Phaecocephalum, 51. 
Phaseolus perennis, 10. 
Phegopteris, 82; alpestris, 155, 158; 
Dryopteris, 63, 82; hexagonoptera, 
82, 208; polypodioides, 82; Roberti- 
ana, 158. 
Phelps, O. P., Noteworthy Plants of 
Salisbury, Connecticut, 74. 
Phleum alpinum, 24, 154, 158, 190. 
Phragmopedilum caudatum, 50. 
Phrynium, 53. 
Phyllantheae, 37. 
Phyllanthus, 37, 45. 
Phyllodoce caerulea, 163, 169, 190.. 
Physaloides, 55. 
Physocarpus, 54. 
Physospermum, 42. 
Phyteuma Halleri, 39. 
gracilis, 
Rhodora 
Picea, 
[DECEMBER 
Abies, forma virgata, 110; 
alba, 75; brevifolia, 109, var. semi- 
prostrata, 110;  canadensis, 158, 
169; excelsa, var. virgata, 110; *mar- 
iana, 110, 158, 169, 174, var. brevi- 
folia, 109, 110; nigra, 75, 218, var. 
brevifolia, 109, var. virgata, 110, 
rubens, 110; rubra, 110, forma vir- 
gata, 110, 111. 
Pilea, 54. 
Pinaceae, 157. Y 
Pinguicula, 153; vulgaris, 154, 163, 
167, 172, 183, 190. 
Pink-petaled Form of Cethra alnifolia, 
195. 
Pinnularia, 131. 
Pinus rigida, 194, 195; virginiana, 195. 
Plagiogramma Gregorianum, 138; stau- 
rophorum, 138; validum, 138. 
Plagiotropis vitrea, 135. 
Plant, Is Rhinanthus Crista-galli an 
introduced, 26. 
Plantago aristata, 122. 
Plants collected at Roque Bluffs, 
Maine, in 1907, 218; from Maine, 
Three, 202; International Rules 
for Botanical Nomenclature chiefly 
of Vascular, 33; New Stations for 
two Vermont, 227; Newly observed 
Stations for Massachusetts, 11; Notes 
on Connecticut, 10; of Chesterville, 
Maine, Notes on, 207; of Salisbury, 
Connecticut, 74; Preliminary Lists 
of New England,— XX, Spargania- 
ceae, 86; Soil Preferences of certain 
alpine and subalpine, 149. 
Platanthera, 53. 
Pleiostylae, 37. 
Pleuripetalum, 52. 
Pleurococcus marinus, 197, 198; minia- 
tus, 198. 
Pleurolobus, 54. 
Pleuropetalum, 52. 
Pleurosigma, 128-130; acuminatum, 
134; affine, 130, 134; americanum, 
129, 134; angulatum, 130, 134, var. 
aestuarii, 134; attenuatum, 134; 
balticum, 128-130, 134; Brebissonii, 
134; decorum, 129; 134; elongatum, 
129, 134, var. gracile, 134; exi- 
meum, 134; fasciola, 134; formo- 
sum, 134; hypocampus, 134; inter- 
medium, 130, 134; latum, 134; lit- 
torale, 134; naviculaceum, 134; ne- 
becula, 134; paradoxum, 129, 134; 
scalproides, 134; simile, 134; Spen- 
cerii, 134, var. curvulum, 134; stri- 
gile, 129, 134, 234; strigosum, 134; 
