546 



INDEX. 



volvulus, 90; dumetorum, 90; gla- 

 brum, 90 ; nepalense, 90 ; parony- 

 chioides, 90 ; perforatum, 90 ; rumi- 

 cifolium, 13, 90; sp. 91. 



Polypodium clathratum, 12, 112 ; Dry- 

 optcris, 112. 



Polypogon littoralis, 107; sp., 107 ; 

 monspeliensis, 107. 



Polyporus ferreus, 385 ; picipes, 385 ; 

 scabriusculus, 384 ; sulfureus, 385 ; 

 vaporarius, 385. 



Polysaccum pisocarpiuin, 386 ; tube- 

 rosum, 386. 



Polystachya, 317, 319, 



Pomatocalyx, 335. 



Ponera, 312, 313 ; adendrobium, 313. 



Ponerorehis, 355. 



Ponthieva, 341, 343. 



Populus alba, 9, 14, 96, var. denudata, 

 9. 96 ; nigra, 14, var. afghanica, 15, 

 27, 96. 



Porpax, 302. 



Porpbyrostacbys, 342. 



Portulaca oloracea, 38. 



Porfulacefc (Afghan), 38. 



Position of Leaves with regard to 

 Light, 420. 



, Conclusions thereon, 447 ; Dar- 

 win's researches, 424 ; Definition of 

 terms, 426 ; De Vries's theory, 421 ; 

 diaheliotropic plane, 429. 



■ , experiments testing, 429 ; with 



Beans, 437 ; Cherries, 439 ; Klino- 

 stat, 441 ; Plantain, 438 ; Ranuncu- 

 lus Ficaria, 429 ; Vegetable Marrow, 

 438. 



, Frank's theory, 421 ; fundamental 



exp., 425 ; lateral position, 428 ; 

 light parallel to axis, 426 ; Sachs's 

 views thereon, 422 ; transverse plane, 

 428; zenith position, 427. 



Potamofjeton oblongus, 99. 



Potentilla, 374; argyrophylla, 53 ; Col- 

 letiana, 13, 53; lragarioides, var. pu- 

 mila, 53, var. Gerardiana, 53 ; monan- 

 thes, 22, 53 ; multifida, 53 ; reptans, 

 53 ; serieca, 22, 53 ; Sibbaldi, 52 ; su- 

 pina. 53. 



Poterium sanguisorba, 54. 



Prangos pabularin, 19, 62. 



Prenanthes sp., 73. 



Preptanthe, 308. 



Prescottia, 341, 342. 



Primula denticulata, 17, 21, 77, 375, 

 var. 13; Horibunda, 373; purpurea, 

 21, 22, 77, 375 ; rosea, 12, 77, 375. 



Priinulacero (Afghan), 77. 



Pringsheim's recent Besearches on Chfo- 

 ropbyll, application of the results of, 

 to the life of the Lichen, 147. 



Promensea, 320 ; graminea, 321. 



Prosthechea, 314. 



Protococcacese, 125. 



Protococcus viridis, 125. 



Provence, vegetation littoral districts of, 



135. 

 Prunus Amygdalus, 50 ; armeniaca, 51, 



374 ; Cerasus, 51 ; communis, var., 



51 ; eburnea, 50 ; Jacquomontii, 11» 



17, 51; Padus, 11, 24, 51, 374; 



persica, 51 ; sp. ? (near P. Amygdalus), 



50. 

 Pseudepidendrnm, 314. 

 Pseuderiopsis, 321. 

 Pseudocentrum, 341, 342. 

 Pseudotsuga Douglash, 485. 

 Psilanthemum, 314. 

 Psilocarya, 365. 

 Psilonia nivea, 388. 

 Psittacoglossum, 324. 

 Psychechilus, 345. 

 Ptcrichis, 341. 



Pterocephalus speciosus, 16. 

 Pteroceras, 333. 

 Pteroglossaspis, 319, 320. 

 Pteroscleria, 366. 

 Pterygodium, 358. 

 Ptichochilus, 341. 

 Punica, 6, 10 ; granatum, 59. 

 Pycreus, 361. 

 Pyrus Aucuparia, 12, 56 ; communis, 



55 ; lanata, 12, 24, 55 ; Malus, 55 ; 



sp., 55 ; variolosa, 6. 



Quekettia. 329. 



Quercus coccifera, 139 ; Hex, 10, 11, 14» 



15, 19, 25. 27, 95, 138 ; Kobur, 139 ; 



semecarpifolia, 11, 15, 27, 95 ; Suber, 



138. 

 Queteletia, 344. 



Banunculacese (Afghan), 29. 



Ranunculus, 374; aquatilis, 373; ar- 

 vensis, 30 ; Baurii, 390 ; diffusus, var. 

 hydrocotyloidcs, 377 ; divergens, 30 ; 

 falcatus, var. orthoceras, 30 ; hirtel- 

 lus, 30, 377. and var., 30; lsetus, 30, 

 and var., 30, 372 ; muricatus, 372 ; 

 pangiensis, 377 *, pinnatus, 264 ; 8 £^ 

 ratus, 372, var. myosuroides, 3/7 ; 

 sp. ?, 30. 



Raphanus Baphanistrum, 35. 



Baphidium polymorphum, 125. 



Bemarks on the Indian Cofl'ee-Leaf Di- 

 sease, by W. Bidie, 458. 



Bemirea, 365. 



Benanthera, 331, 334 ; bilinguis, 332 ; 

 coccinea, 334 ; elongata, 334 ; matu- 

 tina,334; micrantha, 334; Suliugi, 

 332. 



