INDEX. 



485 



Radish, 395 



Ranunculaeex , 128 



Ranunculus acris, 365 



Raphanus sativus, 365, 395 



Re i nke, nectar-secreting glands of 

 Prunus avium, 405 



Reseda lutea, 117; measurements, 

 118, 119; result of experiments, 

 339 ; self- fertile, 365 



odorata, 119; measurements, 



120-123 ; self-fertilised scarcely ex- 

 ceeded by crossed, 289 ; seeds, 316 ; 

 want of correspondence between 

 seeds and vigour of offspring, 

 328; result of experiments, 336; 

 sterile and self-fertile, 358, 365 



Resedacese, 117 



Rheum rhaponticum, 403 



Rhexia glandulosa, 364 



Rhododendron, spontaneous cross- 

 ing, 396 



Rhododendron aaaloides, 435 



Rhubarb, 396, 403 



Ribes aureum, 435 



Riley, Mr., pollen carried by wind, 

 408; Yucca moth, 421 



Rimpan, on the cross-fertilisation 

 of Kye, 341 ; on the self-fertility 

 of wheat, 370 



Rodgers, Mr., secretion of nectar in 

 Vanilla, 404 



Rye, experiment on pollen of, 377 



BCJ 

 8ah, 



Salcia cocclnea, 93 ; measurements, 

 93 ; early flowering of- crossed, 

 292 ; seeds, 315, 322 ; partially 

 self-sterile, 363 



glutinosa, 430 



Salvia graJiami, 429, 431, 436 



tenori, 362 



Barothamnus scoparius, 163; mea- 

 surements, 165-167 ; superiority 

 of crossed seedlings, 285, 289; 

 seed-, 323; self-sterile, 360 



Scdbiosa atro-purpurea, 172; mea- 

 surements, 172, 173 



ScarU t-runner, 150 



Scott, J., Papaver semniferum, 108; 

 sterility of Verbascum, 330; On- 

 cidium and Maxillaria, 331 ; on 

 email seeds of Papaver, 355 ; on 

 Primula scotica and Cortusa mat- 

 thioli, 362 



Scrophulariac&e, 63 



Seeds, size and germination of, 352. 



SelagineUa, 413 



Self-fertile varieties, appearance of, 

 347-351 



Self-fertilisation, mechanical struc- 

 ture to check, 383 



Self-sterile plants, ?-29-347; wide 

 distribution throughout the 

 vegetable kingdom, 341 ; differ- 

 ence in plants, 342; cause of 

 self-sterility, 343; affected by 

 changed conditions, 344-346 ; 

 necessity of differentiation in the 

 sexual elements, 317 



Senecio cruentus, 335, 364 



heritieri, 3 55 



maderensis, 335 



populifolius, 335 



tussilaginis, 335 



Sharp, Messrs., precautions against 

 intercrossing, 396 



Snow-flake, 176 



Solanaceie, 188 



Solanum tuberosum, 362, 389 



Specularia perfoliata, 174 



speculum, 174 ; measurements, 



175, 176; crossed and self-ferti- 

 lised, 276; early flowering of 

 crossed, 293; seeds, 323; self- 

 fertile, 369 



Spencer, Herbert, chemical affinity, 

 462 



Spiranthes autumnalis, 391, 424 



Bprengel, C. K., fei tilisation of 

 flowers by insects, 5, 6; Viola 

 tricolor, 123 ; colours in flowers at- 

 tract and suide insects, 372-374 ; 

 on Arigtolochia, 41 9 ; Aconitum 

 napellus, 431 ; importance of in- 

 sects iii fertilising flowers, 460 



Staokys coccinea, 430, 431, 436 



