INDEX. 



Adelphous filaments, 57; imitated, 

 59 ; and nectaries, 58 



Adhesion, analogies in animal king- 

 dom of, 48, 88; principle of, 5, 78, 

 seqq. ; rationale of, 80 ; of stamen to 

 perianth, and origin of, 81, and to 

 style (?), Aristolochia, (fig. 21) 83 



jEstivations and phyllotaxis, (fig. 3) 

 15 



Alpine, flowers, colours of, 176 ; 

 strawberry, phyllody of, 301 



Amaryllis, appendage to perianth, 

 (fig. 41) 134 



Androdioecism, examples, explanation 

 and origin of, 227 



AndrcEcium, explained, 4 ; irregu- 

 larity in, origin of, 109 



Anemophilous flowers, 265, seqq. ; 

 characters of, 268; cosmopolitan, 

 283 ; " long-lived " stigmas of, 

 269 ; pollen of, 266 



Anemophily, and Greenland flora, 

 270; and cleistogamy, 264; and 

 degeneracy, 266, 272 ; and hete- 

 rogamy, 269 ; origin of, 266, 270, 

 272; and protogyny, 200, 269, 

 272 



Anisomerous whorls, explained, 5 ; 

 causes of disarrangement of, 45 



Anthers, on bracts, (fig. 64) 288; 

 connivent, of Violet, 60 ; conta- 

 beseent, 275 ; on glumes, (fig. 65) 

 288 ; metamorphosed, 293, (fig. 81) 



298, (figs. 83, 84) 302; stigma- 

 tiferous, (fig. 76) 294 ; syngene- 

 sious, and mterpretation of, (fig. 

 11) 60; versatile, 266. 268 



Ant-plants, hereditary efl'ects of irri- 

 tation in, 115, 142,' 157 



Appendages, in Amaryllis, (fig. 41) 

 134; and axis, homology between, 

 309 ; origin of floral, 133 



Aquilegia vulgaris, arrangement of 

 floral whorls of, 22 ; number of 

 parts in, 22 



Arahis albida, leaf-traces of, (fig. 7) 

 39 



Arctic flora, and anemophily, 270 ; 

 and self-fertilisation, 259 



Aristolochia, structure of flower, (fig. 

 21) 83 



Arrangement, causes of, 47 ; displace- 

 ment of, by anisomery, and substi- 

 tution, 45 ; illustrations of, in 

 HamcnculacccB, 21, seqq.; principle 

 of, 5, 139 



Arrest, of carpels, 4, 8, 278 ; of 

 carpels in Campanulacew, 44; of 

 floral axis, 6 ; in free-central pla- 

 centas, 72, seqq. ; of growth of 

 ovary and seeds in Orchids, 169, 

 281, and in Willows, 170 



Atragene, staminal nectaries of, (fig. 

 44) 141 



Atrophy and hypertrophy in animal 

 kingdom, 88 ; as causes of irregu- 

 larities, 108 ; in compensation, 105 ; 

 in zygomorphism, 116, seqq. 



