520 
Physeia picta, Nyl, 87. 
— speciosa, Fr., 87. 
Physciacew, SG 87. 
Phystotuon caledonicum, Gottsche, 31. 
Phytoplankton in relation to Fish larva, 
166-169, 
Picea, Link, mentd., 453; pollen, 494, 498, 
504. 
Pieris spp., visitors to Primulas, 127. 
Pine, fossil pollen, 456-490 ; remains, 469. 
Pinguicula, Tourn., mentd., 407, 410, 412, 
413. 
— vulgaris, Linn., mentd., 462, 464, 466. 
Pinus, Linn., fossil pollen, 452-497, 504. 
— contorta, Dougl., mentd., 455. 
— silvestris, Linn., mentd., 468. 
— sp., mentd., 456, 457. 
Pithopbora sp., host, 337. 
Placodium cinnamomeum, A. L. Sm.*, 86. 
griseo- virens, A. L, Sm.*, 86. 
Plagiochasma bisetulum, Steph., 15. 
Plagiochila Belangeriana, Zindenb., 21. 
— Comptonii, W. H. Pearson *, 21, 
— fructicosa, Mitt., 21. 
laciniata, W. H. Pearson *, 21. 
— nutans, Sfeph., 21. 
Plankton, mentd., 2. 
Planorbis lineatus, Costa, mentd., 410, 
Plantago maritima, Linn, mentd. 472, 
476, 491. 
Platanthera bifolia, Rich., mentd., 466. 
Platycerium, Desv., mentd., 229, 
Platyzoma microphyllum, 2. Br., 223, 994. 
Plectonema, Thur., mentd., 342. 
Pleurosigma elongatum, JF. Sm., 59. 
Pleurotænium basiundatum, W. 
West, 64. 
— maximum, Lund., 64. 
— subgeorgicum, Cushman, 64. 
— Trabecula, Naeg., 3. 
Pleurozia caledonica, Steph., 51. 
Podonosma galalense, Schweinf., 389, 
— syriacum, Doiss., 689, 897. 
Pollination of the British Primulas (M. 
Christy), 105-159, 
Polycystis litoralis, Hanse., 336. 
Polygala, Linn. sp., mentd., 466. 
Polygonum amphibium, Linn., mentd., 2. 
Polyides rotundus, Grev., mentd. as host, 
296. 
Polyphysa peniculus, Ag., 45. 
INDEX. 
Polypodium, Zinn., mentd., 273. 
— durus, Jungh., SS. 
— mycenoides, Pat., 89, 
— vulgare, Zinn., fossil spores, 452-487. 
Polysiphonia, Grev., a erıtical revision of 
the British species (L. Batten), 271- 
oll. 
— adunea, Kütz., 293. 
— aflinis, Moore, mentd., 307. 
— Ayardhiana, Grev., 289, 
— arborescens, Kütz., 297. 
— armata, J. G. Ag., 296. 
— atro-purpurea, Moore, mentd., 307. 
— atro-rubescens, Grev., 283, 284, 
mentd., 273, 300, 
— Brodiwi, Grev., 283, 303; mentd., 279. 
— callitricha, Wiitz., 303. 
— Carmichaeliana, Harv., 301, 
280; 
— ceramime formis, Crouan, mentd., 292. 
— chalarophlea, Kütz., 297, 
— clavigera, Kütz., 297. 
— collabeus, Ag., mentd., 294. 
— comatula, Kütz., 305. 
— condensata, Kütz., 298. 
— denticulata, Kütz., 288. 
— dichocephala, Kitz., mentd., 307. 
— discolor, Kütz., 289. 
divaricata, Kütz., 202. 
— divergens y. Grevilleana, Kütz., 295. 
— elongata, Harv., 279, 984, 207 ; mentd,, 
273, 275, 276, 278, 299, 302, 503, 306. 
— elongella, Harv., 284,208; mentd., 204, 
205. 
— erythrocoma, Kitz., 298. 
— fasciculata, Küiz., 293. 
— fastigiata, Grev., 274-77, 983, 984, 990 ; 
mentd., 272, 278. 
— fibrata, Harv., 284, 299; mentd., 973. 
— fibrillosa, Grev., 284, 300; mentd., 301. 
— foetidissima, Cocks, 283, 304; mentd. 
278. 
— forcipata, J. G. Ag., 203. 
— formosa, Suhr, 288. 
— fruticulosa, Spr., 278, 279, 284, 305; 
mentd., 275, 296. 
— furcellata, Hook., 283, 292, 
— — a. forcipata, Ay., mentd., 292, 
— havanensis, Kitz., mentd., 288. 
- — var, insidiosa, J. G. Ag., 285. 
— hemispherica, Aresch., mentd., 286. 
insidiosa, Crown, 282, 984, 285, 
