INDEX. 



351 



POLLEN-QBAINS. 



Pollen-grains, relative diameter of, 

 249 



Polycmthus, 18 



PolygonacesB, 111 



Polygonum historta, 114 



fagopyrvm, 111, 239; pollen- 

 grains, 251 



Ponteieria, 183 ; pollen-grains, 186 : 

 size of anthers, 252 



— — Bordata, 187 



Posoqueria 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 



elata, 49 



elatior, Jacq., 32 ; relative fer- 

 tility of the two forms, 33, 47; 

 not a hybrid, 72, 73 ; equal-styled 

 var. of, 224, 273 



fa/rinosa, 45; equal-styled var., 



224, 273 



hirsuta, 74 



involucrata, 45 



longiflora, 50 



mollis, 49, 50 



Sootiea, 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 



stricta, 50 



veris, 14 ; difference in struc- 

 ture between the two forms, 15; 

 degrees of fertility when legiti- 

 mately or illegitimately united, 

 25-32 ; fertility possessed by ille- 

 gitimate plants, 228-234 ; equal- 

 styled red variety, 234-238 ; loug- 

 styled, 241 ; length of pistil, 261, 

 266 



vertioillata, 49, 50 



villosa, 49 



vulgaris (var. acaulis Linn.), 



34; pollen-grains, 35; relative fer- 



tility of the two forms, 37 ; length 



of pistil, 266 

 Primula vulgaris, var. rubra, 224-228 

 Prunella vulgaris, 299 

 Psychotria, 135 

 Pulmonaria angustifolia, 104, 239; 



anthers, 252, 287 



aziirea, 110 



offlovnalis, 101, 238 ; number of 



flowers, 248 ; pistil, 250 



BanuMcvlus aquatilis, 811 

 Eay-florets, their use, 5, 6 

 Mlummus catharticus, 294, 307 ; size 



of coroUa, 308 



franffula, 297 



la/Hceolatus, 295 



Bhinanthus crista-gaUi, 4 

 RvMacese, 125, 131-136; size of 



anthers, 252 ; stigmas, 253 ; 



number of heterostyled genera, 



284, 285 

 Mudgea eriaiUha, 135 

 Eue, the cominon, 9 

 Buellia tuberosa, 329 



S. 



Salvia, 308 



eleistogama, 340 



Sorminumi, 8 



Satureia hortensis, 303, 304 



Soabiosa arvensis, 305 



atro-pwrpurea, 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 ; homostyled 

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

 length of pistil, 272; BoUonia 

 palustris, 51 ; Androsace vital- 

 liana, 53 ; Polyanthus, 58 ; Mit- 

 cheUa repens, 127; Aoanfhaceie, 

 313 ; Eranthemum anibiguvm bear- 

 ing three kinds of flowers, 329 



Scrophularia aguatica, 147 



Serratula tinctoria, 280, 307 



Sethia acuminata, 122 



