INDEX, 519 
Opegrapha  Bonplandia var. abbreviata 
Müll.- Arg., 12. 
— diagrapha, Nyl., 72. 
Orchis letifolia, Zinn., mentd., 482. 
— maculata, Linn., mentd., 459. 
Oribates, Latr. sp., fossil, 458. 
Oscillatoria limosa, 4g., 337, 338. 
— princeps, Vauch., var. pseudo-limosa, 
S. L. Ghose *, 334, 337. 
— spp., mentd., 335. 
— tenuis, Ag., 334, 338. 
— violacea, Hass., 51. 
Oscillatoriaceæ, 51, 537-340, 
Osmia rufa (Linn.) visitor to Primulas, 
128. 
Osmundaceæ, Permian, 347-358. 
Palmellaceæ, 61. 
Pandorina morum, Bory, 3, 6. 
Pannaria mariana, Müll.-Arg., 81. 
— — var. isidioidea, Müll.- Arg., 81. 
— nigrocincta, Nyl., 81. 
— perfossa, Stirton, 80. 
Pannariaceæ, 79-82. 
Parmelia acariospora, A. Zahlbr., 85. 
— cetrata, Ach., 84. 
— circumnodata, Nyl., 85. 
— conspersa, Ach., var. isidiata, Leight., 85. 
— crinita, Ach., 85. 
— cristifera, Tayl., 85. 
— perforata, Ach., 85. 
— perlata, Ach., 85. 
— proboscidea, W ainio, 85. 
— tiliacea subsp. carporhizans, Nyl., 86. 
— tinctorum, Despr., 85. 
— Wainii, A. L. Sm.*, comb. nov., 85. 
Parmeliaceæ, 85-86. 
Parmeliella Comptonii, A, Z. Sm.*, 80. 
— fulva, A. L. Sin.*, 80. 
— plumbea, Wainio, mentd., 80, 
— sp., 8l. 
— triptophylla, Müll.-Arg., 81. 
Parnassia palustris, Linn., mentd., 482. 
Pearson, W. IL, Hepatice from New 
Caledonia, 13-44. 
Pecopteris obliqua, Brongn., 207. 
Pecten maximus, Linn., mentd. as host, 
290. 
— opercularis, Chemn., mentd., 159. 
— spp., mentd., 159. 
Pediastrum duplex, Meyen, 3. 
LINN. JOURN.—BOTANY, VOL. XLVI. 
Pediastrum sp., fossil pollen, 475. 
— tetras, Ralfs, 3, 61. 
Pedicularis silvatica, Linn., mentd., 471, 
476, 482. 
Pellia sp., mentd., 17. 
Penium cucurbitinum, Biss., 66. 
— margaritaceum, Bréb., 63. 
— minutissimum, Nordst., 63. 
— minutum, Cleve, f. major, Lund., 67. 
Perichæta indica, Horst., mentd., 423. 
Peridinieæ, 4. 
Peridinium, Ehrenb., 157. 
— anglicum, G. S. West, 4, 5, 9. 
—- bipes, Stein, 4, 5. 
— — var, exeisum, Lemm., 4, 5, 9. 
— cinctum, Ehrenb., 4, 5, 8. 
— divergens, 163-164. 
— inconspicuum, Lemn., 4, 5. 
— sp., 49. 
— Suttoni, B. M. Griffiths * , 4, 5, 8-9. 
— Volzii, Lemm., var. australe, G. S. 
West, 8. 
— Willei, Huitf.-Kaas., 4, 5, 8. 
Permian Osmundaceæ, 347-358. 
Peronia erinacea, Bréb. § Arn., 52. 
— — forma, N. Carter, 57. 
Pertusaria citrina, À. L. Sm.*, 84. 
— leioplaca, Schaer., 84. 
var, octospora, Nyl., 84. 
— pycnothella, Nyi., 84. 
— subvelata, Nyl., 84. 
— sulphurea, Schaer., 84. 
— velata, Nyl, 89, 84. 
— velatoides, À. L. Sm.*, 83, 
Pertusariaceæ, 83-84. 
Petalonema alatum, Berk., 53. 
Petasites sp., mentd., 227. 
Phæophyceæ, 45. 
Phanerosaurus, Copeland, gen. dub., 228. 
Phlebopteris spectanda +, Sap., mentd., 231. 
Phormidium autumnale, Gom., 334, 338. 
— fragile, Gom., 358. 
— truncicola, 8. L. Ghose *, 335, 338, 339, 
Phragmites, Trin. sp., mentd., 445; peat, 
478; remains, 470. 
Phyllopsora parvifolia, Müll.- Arg., 78. 
Physarum roseum, Berk. § Broome, 94, 
96, 
— viride, Pers., var. aurantium, Lester, 94, 
Physcia adylutinata, Nyl., 87. 
— elæina, A. L. Sm., 87. 
2Q 
