244 Rhodora 
Phormidium papyraceum, 212; 
tenue, 211. 
Phragmites communis, 154, 156, 
159, 175. 
Phyllophora, 189; Brodaei, 214; 
membranifolia, 191, 215. 
Phyllosticta labruscae, 218. 
Picris, 132; hieracioides, 132. 
Pimpinella Saxifraga, 230. 
Pinaceae, 219. 
Pinus sylvestris, 219. 
Pitch pine, 182. 
Plagiochila asplenioides, 9. 
Plantaginaceae, 228. 
Plantago lanceolata, 185, 228; 
major, 185, 228. 
Plants of eastern America, new or 
recently restudied, 122; of Hing- 
ham, Mass., Notes on, 175; of 
Rhode Island and southeastern 
Massachusetts, Notes on, 127. 
Plasmopara viticola, 218. 
NM subeordiformis, 190, 
12 
Pleurococcus vulgaris, 212. 
Pleurosigma aestuarii, 194, 217; 
affine, 194, 217; elongatum, 193, 
194, 217. 
Pluchea, 132; camphorata, 132. 
Pleurotaenium, 206; coronatum, 
206; nodosum, 206; Trabecula, 
206. 
Plumaria elegans, 215. 
Poa Bree 139; pratensis, 186, 
22 
Podoeystis Adriatica, 194, 218; 
Americana, 194, 218. 
Polygonaceae, 224. 
Polygonum, 144; acre, 188, 224; 
amphibium, 3; f. Hartwrightii, 3; 
f. terrestre, 3; aviculare, 224; 
Convolvulus, 185, 186, 224; Hy- 
dropiper, 188; Muhlenbergii, 3; 
f. natans, 3; Persicaria, 224; 
puritanorum, 220; virginianum, 
129. 
Polysiphonia, 189, 191; elongata, 
215; fastigiata, 189, 190, 215; 
fibrillosa, 191, 215; nigrescens, 
190, 215; var. Durkeei, 215; var. 
fucoides, 215; urceolata formosa, 
190; urceolata, var. formosa, 215; 
var. patens, 215; variegata, 191; 
violacea, 215; var. flexicaulis, 216. 
Polystichum, 89; aculeatum, 91; 
aculeatum scopulinum, 89; andi- 
num, 90; elegans, 90; Lemmoni, 
90, 91, 92; Lonchitis, 89; var. 
[DECEMBER 
scopulinum, 89; mohrioides, 89, 
90, 91, 92, 93, 94; and some 
other subantarctie or Andean 
Plants in the northern Hemis- 
phere, 89; var. elegans, 90, 91, 92; 
var. Lemmoni, 92; var. plica- 
tum, 90, 91, 92; var. scopuli- 
num, 89, 92, 93, 125; var. 
typicum, 91; scopulinum, 89, 90, 
91. 
Polystictus versicolor, 218. 
Polytrichum commune, 219; junip- 
erinum, 219; piliferum, 219. 
Poplar birch, 182. 
Populus alba, 224; deltoides, 224. 
Porella platyphylla, 12; platy- 
phylloidea, 12. 
Porellaceae, 12. 
Porphyra, 190; laciniata, 215. 
Portulaca oleracea, 225. 
Portulacaceae, 225. 
Potentilla argentea, 186, 225; mon- 
speliensis, 225; pumila, 225. 
Prasiola fluviatilis, 162; stipitata, 
190, 213. 
Prenanthes, 132; alba, 132; altis- 
sima, 132; f. hispidula, 132; 
serpentaria, 132; trifoliolata, 132. 
Primulaceae, 227. 
Pringle, C. G., 52. 
Protoderma, 189; marinum, 213. 
Protosiphon botryoides, 212. 
Prunus serotina, 225. 
Psedera quinquefolia, 226. 
Pseudo-eunotia doliolus, 194, 218. 
Pseudotaenidia, 23, 24; in Mary- 
land, 23. 
Psilocarya scirpoides, 180. 
Pteridium, 230. 
Ptilidiaceae, 11. 
Ptilidium ciliare, 11; pulcherrimum, 
11. 
Puccinia, 218; malvacearum, 218; 
Dip 218; triticina, 
Punctaria, 189, 190; latifolia, 191, 
214. 
Pylaeiella littoralis, 214. 
Quebec, Some Senecios of eastern, 
Quereus rubra, 185, 224. 
Radula complanata, 12; obconica, 
Radulaceae, 12. 
Ralfsia, 189; verrucosa, 191, 214. 
Rand, E. L., obituary notice of. 198. 
