242 



Rhodora 



[December 



Pandorinae, 78. 



Panicularia brachyphylla, 211. 

 Panicum, 138; aculeatum. 209; oo- 

 luinbianum, 209; dichotoiiuiin, 

 206; gravius, 205, 206; huachiicae, 

 208; lanugincsuin, 207, var. hua- 

 chucae, 208, var. siccanum, 

 207; minus, 220; Nashianuin, 

 var. patvilum, 209; oricola, 208; 

 patulum, 209; praecocius, 206; 

 psaiuinophiluni, 209; scabriuscu- 

 funi, 209; unciphyllum, 209, var. 

 thinium, 209; viride, var. bre- 

 visotuiu, 210. 



Parit'taria pennsylvanica, 222. 



Parnassia caroliniana, 220. 



Paronychia, 101, 102; argyrocoma, 

 101-103, and its new England 

 Representative, 101, var. albi- 

 montana, 103. 



Pa.spahnn australe, 205; Elliottii, 

 205; laeve, var. australe. 205; 

 pro.stratum, 205; psammophilum, 

 205. 



PaspaUi.s furcatus, 205. 



Pease, A. S., Peculiarities of Botry- 

 chium lanceolatum in America, 



229. 



Peculiarities of Botrychium lanceola- 

 tum in America, 229. 



Pellaea atropurpurea, 13 



Penobscot Valley, A handsome Wil- 

 low of the, 21; Some noteworthy 

 Plants of the, 65; Viola novae- 

 angliae in the, 115. 



Pentstemon hirsutus, 222; pallidas, 

 222. 



Perianth of Rynohospora capillacea, 

 var. leviseta, 186. 



Persea Sassafras, 199. 



Phasoolus perennis, 223. 



Phegopteris alpestris, 31. 



Phippsia, 138. 



Phlox pilosa, 222. 



Phormidium Retzii, 122, forma fas- 

 cicvilatum, 122. 



Phycomycetes, 67, 68. 



Phycotheca Boreali- Americana, New 

 Species, etc., issued in, 104. 



Physocarpus opulifolius, 99. 



Pieris Mariana, 27. 



Piptocephalis, 67. 



Plants of Bangor, Maine, Notes on 

 some, 72; of New England, their 

 History and Distribution, Further 

 Remarks on the coastal plain, 27; 

 of the Penobscot Valley, 65; of 

 Tiarella and Mitella, Some anoma- 

 lous, 90; Preliminary Lists of New 



England,— XVIII, 62, XIX, 131; 



Some new Records of Maine, 98. 



Platanthera Menziesii, 3-5; orbicu- 



lata, 5. 

 Plectonema, 113. , ] 



Plumaria elegans, 112. 

 Poa elongata, 211; flava, 210; Tor- 

 reyana, 211. 



Pogonatum aloides, 132; alpin\im, 

 132, var. arcticum, 131-133; arcti- 

 cvnn, 132; brevicaule, 131, 132; 

 capillare, 131; urnigerum, 131. 



Pogonia, 19, 20, 100; (Isotria) verti- 

 cillata, Observations upon, 19; 

 ophioglossoides, 29, 100; verti- 

 cillata, 19, 100, Remarks upon 

 Mr. House's Paper on, 100. . 



Polygala cruciata, 27; paucifolia, 

 forma albiflora, 66. 



Polygonum cristatum, 221; Zuc- 

 carinii, 66. 



Polytrichaceae, 131. 



Polytrichum alpinum, 132; arcti- 

 cum, 132; comnmne, 131, 133, 

 134, var. perigoniale, 131, 133, var. 

 uligino.sum, 131, 134; formosum, 

 131, 134; gracile, 131, 134; Jen- 

 senii, 131, 135; juniperinum, 131; 

 ohioense, 131, 134; piliferum. 

 131; Smithiae, 131; strictum 131. 



Pontederia, 27. 



Populus dilatata, 65. | 



Porphyra, 195. 



Potamogeton, 27. 28; angustifolius, 

 224; heterophyllus, 224; spathae- 

 formis, 224, a probable Hybrid in 

 My.stic Pond, 224. 



Potcntilla tridentata, 102. 



Prairie, CJueen of the, 202. 



Prasiola, 106; Gardner! , 106 



Preissia commutata, 168. 



Preliminary Lists of New England 

 Plants,— XVIII, 62, XIX, 131. 



Preston, H. W., Two Editions of 

 Torrey and Gray's Flora of North 

 America, 232. 



Principles of Botany, 230. 



Primus Gravesii, 80. 



Ptilidiutn ciliare, 43, 44, var. pul- 

 cherrimum, 42; pulcherrimum, 42, 

 43. 



Ptilota pectinata, 112, forma tenuis, 

 112. 



Pyrola minor, 168. 



Pyrus americana, 102. 



Quebec, Juncus compressus in the 

 Province of, 233; A new Geum 

 from Vemiont and, 11. 



