INDEX. 521 
Polysiphonia insidiosa, Grev., 285. 
— lasiotricha, Kütz., 300. 
— lophura, Kütz., 306. 
— lophuroides, Kütz., 298, 
— macrocarpa, Harv., 282, 284, 
mentd., 276, 287, 288, 293. 
— macrocephala, Zanard., 293. 
— maeroelonta, Kütz., 207. 
— Martensiana, Kütz., 805. 
— nigra, Batt., 289. 
— nigrescens, Grev., 276, 278, 279, 
284, 306 ; mentd., 295, 302, 303. 
— — var. e. affinis, mentd., 273. 
— obscura, J. G. Ag., 283, 284, 293. 
— opaca, Zanard., 283, 284, 293. 
— ophiocarpha, Wiiez., 293. 
— pantophlea, Kütz., 296. 
— patens, Kütz., 288. 
— penicillata, Kütz., 303. 
— platyspira, Kütz., mentd., 288, 
— polycarpa, Kütz., 203. 
— pulvinata, Harv., 286. 
— pycnophlæa, Kütz., 205. 
286; 
280, 
— ramellosa, Kütz., 296. 
— regularis, Kütz., 306. 
— repens, Kütz.. 293. 
— reptabunda, Kütz., 293. 
— rhunensis, Thuret, 282, 284, 286, 294; 
mentd., 285, 
— Richardsoni, Hook., 283, 294, 
— robusta, Kütz., 297, 
— rosea, Grev., 297. 
— Ruchingeri, Kütz., 297. 
— sentosa, Kütz., 306. 
— sertularioides, Holmes & Batters, 286. 
— simulans, Harv., 283, 284, 295 ; mentd., 
296, 
— spiculifera, Zanard., 293, 
— spinulosa, Harv., 295. 
— spinulosa, Grev., 284, 301. 
— — var. B. major, J. G. Ag., 301. 
— spiralis, Batten *, 282, 284, 287, mentd., 
272, 273. 
— stenocarpa, Kütz., 297. 
— stricta, Kütz., 288. 
— stuposa, Zanard., 504, 
— subulata, J. G. Ag., 302. 
— subulifera, Harv.. 283, 254, 298, mentd., 
272, 295. 
— trichodes, Kütz., 297. 
— tripinnaia, Ixütz., 293. 
Polysiphonia umbellifera, Kitz., 293. 
— urceolata, Grev, 273, 275, 277, 989, 
284, 288; mentd., 276, 278, 279, 300. 
— variegata, J. G. Ag., 283, 307; mentd., 
271, 272, 275. 
— violacea, Marv., 284, 302; mentd., 273, 
275, 276, 280, 307. 
— — var. Griffithsiana, Batten *, 302. 
— — var, tenuissima, Hauck, 502, 
— violascens, Kütz., 306. 
— virens, Kütz., 293. 
Polystichum Lonchitis, Roth, distrib., 220. 
Polystictus flabelliformis, Z’r., 89. 
— microloma, Lév., 89. 
— sanguinens, Fr., 89. 
— xanthopus, Fr., 89. 
— — forma (?), 89. 
Polytrichum, Zinn., mentd., 418, 421, 422. 
— capense, Hoppe, distrib., 220. 
— juniperinum, Willd., mentd., 420. 
Potamogeton peccinatus, Lien., remains 
in peat, 484. 
— polygonifolius, Pourr., mentd., 464 
405, 482, 486, 480. 
— pusillus, Zinn., mentd., 482. 
— sp., mentd. 49, 56, 454, 475. 
Potentilla Tormentilla, Neck., mentd., 459, 
461, 466, 471, 473, 479. 
Primula acautis, Hill, 107, ftnote 136, 
— amoena, Bieb., mentd., ftnote 136. 
— elatior, Jaeq., pollination, 107; mentd., 
ftnote 136, 
— elatior X veris, ftnote 107. 
— farinosa, Linn., ftnote 107, ftnote 136, 
— heterochroma, Stapf, mentd., 
136. 
— Julie, Kusnet., mentd., ftnote 136, 
— leucophylla, fax, mentd., ftnote 136, 
— officinalis, Jacq., 107, ftnote 136. 
— pseudo-elatior, mentd., ftnote 136. 
— scotica, Hook., ftnote 107. 
— veris, Linn., pollination, 107. 
— vulgaris, Hudson, pollination, 107, 
— vulgaris X elatior, ftnote 107, 
— vulgaris X veris, ftnote 107. 
Primulas, their pollination, 105-39; obs, 
on their insect visitors, 108-23; depths 
of corolla-tubes in, 123-25; tongue- 
ftuote 
lengths of their insect visitors, 125- 
129, 
Protoderma viride, Kitz., 61. 
