1916] 



Index 



263 



Oenothera, 198; Crosses, On the 

 Mendelian Interpretation of, 198; 

 Lamarckiana, 199-201; Lamarcki- 

 ana X nanella, 200, 201; La- 

 marckiana X rubrinervis, 199; 

 muricata, 29, 40, 98; nanella, 

 199-201; nanella X Lamarckiana, 

 199; oblonga, 199; pumila, 40; 

 rnbrinervis, 199-201; rubrinervis 

 X nanella, 200, 201; subrobusta, 

 199. 



Old Stumps at Blanc Sablon, 185. 



On the Mendelian Interpretation of 

 Oenothera Crosses, 198. 



Onagraceae, 40, 98. 



Onoclea sensibilis, 31, 187. 



Ophioglossaceae, 26. 



Ophioglossum vulgatum, 26. 



Orchidaceae, 35. 



Orchis, 71. 



Oryzopsis canadensis, 233. 



Osmorhiza obtusa, 187. 



Osmunda cinnamomea, 31; regalis, 31. 



Osmundaceac, 31. 



Overlooked environmental Factor 

 for Species of Prunus, 201. 



Oxyria, 196. 



Padus nana, 140; virginiana, 140. 



Paeonia Moutan, var. Banksii, 156, 

 var. Humei, 156, var. papaveracea, 

 156, var. rosea, 156, var. roseo- 

 superba, 156, var. rubro-plena, 156, 

 var. vittata, 156; papaveracea, 

 156; suffruticosa, var. Banksii, 

 156, var. Humei, 156, var. papa- 

 veracea, 156, var. rosea, 156, var. 

 roseo-superba, 156, var. rubro- 

 plena, 156, var. vittata, 156. 



Palovea, 234. 



Panax Balfouri, 153; filieifolium, 

 153; laciniatum, 153; monstro- 

 sum, 153; plumatum, 153; Vic- 

 tor iae, 153. 



Panicularia distans, 12; distans 

 airoides, 16; maritima, 7. 



Panicum capillare, 95; glabrum, 231; 

 glaucum, 232; huachucae, 33; Is- 

 chaemum, 231; lineare, 231; lutes- 

 cens, 232. 



Papaver, 214; Rhoeas, 214; somni- 

 ferum, 214. 



Papaveraceae, 214. 



Parmelia sulcata, 94. 



Parnassia, 250; caroliniana, 245, 

 247, 250. 



Paronychia argyrocoma, var. albi- 

 montana, 25. 



Parsnip, Wild, 41. 



Passiflora Jamesonii, 156; mollis- 

 sima, 156; Parritae, 156. 



Pawpaw, 211. 



Pear, Wild, 38. 



Pennisetum americanum, 232; glau- 

 cum, 232. 



Penthorum, 249; sedoides, 249. 



Pentstemon gracilis, 244. 



Pepper Grass, Wild, 37. 



Persimmon, 211. 



Philadelphus, 247, 251; coronarius, 

 245, 247, 251, var. tomentosus, 245, 

 251; inodorus, 245; pubescens, 

 245. 



Phleum alpinum, 197; pratense, 33. 



Phippsia, 2. 



Phragmites communis, 96. 



Picea canadensis, 32, 242; pungens, 

 242; rubra, 32. 



Pigeon Berry, 39. 



Pinaceae, 32. 



Pine, Labrador, 241, 242. 



Finns Banksiana, 241, on Nantucket, 

 241; Massoniana, 242; rigida, 32; 

 Strobus, 32; sylvestris, 242. 



Plantaginaceae, 43. 



Flantago decipiens, 43; lanceolata, 

 43; major, 43. 



Plants collected on Matinicus Is- 

 land, Maine, in late Fall, 1915, 29; 

 New Ranges for old, 243; Prelimi- 

 nary Lists of New England, — 

 XXIV, 245; Some Varieties and 

 Forms of Connecticut, 239. 



Platanaccae, 246, 252. 



Platanus, 252; occidentalis, 246, 248, 

 252. 



Plegorhiza, 56. 



Pluchea camphorata, 243, 244. 



Plum, Beach, 94. 



Plumbaginaceae, 98. 



Poa, 2, 29; adspersa, 235; airoides, 

 2, 16; algida, 2; alpina, 2, 101; 

 angustata, 19, 21, 22; angustifolia, 

 235; annua, 34; arctica, 2; Bor- 

 reri, 9; capillata, 236; cilianensis, 

 235; deflexa, 2; delawarica, 9; 

 distans, 2, 12; effusa, 235; Era- 

 grostis, 235; fasciculata, 9, 10; 

 fertilis, 235; hydrophila, 235; 

 lucida, 16; maritima, 7; mega- 

 stachya, 235; multiflora, 235; 

 nootkaensis, 22; nutkaensis, 22; 

 Nuttalliana, 16; palustris, 235; 

 pelligera, 2; phryganodes, 8; pra- 

 tensis, 2, 34, 95, 96; procumbens, 

 11; psilosantha, 2; riparia, 235; 



