INDEX. 



351 



POLLEN-GRAINS. 



Pollen-grains, relative diameter of, 

 249 



Polyanthus, 18 



Palygonacese, 111 



Pulygonum bisiorta, 114 



fagopyrum, 111, 239; pollen- 

 grains, 251 



Pontfderin, 183 ; pollen-grains, 18G ; 

 size of anthers, 252 



cordata, 187 



Piisoquer/a fragrans, 131 



Primrose, the common, 34, 57-71 



Primula, the, heterostyled species of, 

 14; summary on, 45-49; homo- 

 styled species, 49 



auricula, 30, 43, 48, 74, 223 



equal-styled varieties, 273 



cortusoides, 44 



data, 49 



elatior, Jacq., 32; relative fer- 

 tility of the two forms, 33, 47; 

 not a hybrid, 72, 73 ; equal-styled 

 var. of, 224, 273 



farinosa, 45 ; equal-styled var., 



224, 273 



hirsuta, 74 



invol urrata, 45 



longiflora, 50 



moilis, 49, 50 



Scot tea, 49, 50 



Sibirica, 49 



Sikkimensis, 44, 47 



Sinensis, 22, 30, 38; relative 



fertility, 39-43, 47, 49; long- 

 styled, 213; short-styled. 215; 

 transmission of form, constitution 

 and fertility, 216; equal-styled 

 variety, 218-223, 273, 274 



gttictn, 50 



veris, 14; difference in struc- 

 ture between the two forms, 15 ; 

 degrees of fertility when legiti- 

 mately or illegitimately united, 

 25-H2 ; fertility possessed by ille- 

 gitimate plants, 228-234 ; equal- 

 styled red variety, 234-238 ; long- 

 styled, 241 ; length of pistil, 2U1, 

 266 



verticiUata, 49, 50 



v/llosa, 49 



vuJgaris (var. acaulis LinnO, 



34 ; pollen-grains, 35; relative fer- 



SETUIA. 



tility of the two forms, 37 ; length 



of pistil, 266 



Primula vulgaris,v&T. rubra, 224-228 

 Prunella vulgaris, 299 

 Psychotria, 135 

 Pulmonaria ancjnstifolia, 104, 239; 



anthers, 252, 287 



azurea, 1 1 



officiitalis, 101, 238 ; number of 



flowers, 248; pistil, 250 



B, 



Ranunculus aquatilis, 311 

 Ray-florets, their use, 5, 6 

 Ithamnus catharticus, 294, 307; size 



of corolla, 308 



frangula, 297 



lanceolatus, 295 



lihinartthus crista-galli, 4 

 Rubiacese, 125, 131-136; size ol 



anthers, 252 ; stigmas, 253 ; 



number of heterostyled genera 



284, 285 



Rudgea eriantha, 135 

 Rue, the common, 9 

 Kuellia tuberosa, 329 



S. 



Salvia, 308 



cleistogama, 340 



Ilorminum, 8 



Satureia hortensis, 303, 304 



Scabiosa arvensis, 305 



atro-purpurea, 305, 307 



succisa, 305 



Scott, J., on Primula auricula, 30, 

 43, 223; P. vulgaris, 34; (var. 

 rubra), 224 ; P. Sikkimensis, 44 ; 

 P. farinosa, 45, 224 ; homng^led 

 Primula:, 49, 50 ; hybrids, 74, 75 ; 

 length of pistil, 272; Hottonia 

 palustris, 51 ; Androsace vital- 

 liana, 53 ; Polyanthus, 58 ; M t- 

 chella repens, I'll; Acanlhaceie^ 

 313; Eranthemumarribiguum bear- 

 ing three kinds of flowers, 329 



Scrophularia aquatica, 147 



Jfrrratula tinctoria, 280. 307 



Scthia, avaiuinata, 122 



