280 PHYLLODY. 
It might at first be supposed that the same causes 
that bring about the complete substitution of leaf-buds 
for flower-buds (see Heterotaxy) would operate also m 
the partial substitution of leaves for other parts of the 
flower, but it will be seen that the inducing cause, 
whether similar or not in the two cases respectively, 
acts at different times; in the one case, it is not 
brought into play until the rudiments of the flower 
are already formed, whereas in the other the influence 
is exerted prior to the formation of the flower. So 
that while the formation of leaf-buds in place of flower- 
buds may be and generally is due to an excess of 
nutrition, inducing over activity of the vegetative 
organs, the production of phyllomorphic or chloranthic 
flowers may be owing rather to a perversion of deve- 
lopment arising from injury or from some debilitating 
agency. The discrepancies in the assigned causes for 
the conditions above mentioned may, therefore, in 
great measure, be attributed to the different periods 
at which the causes in question operate. 
The following list may serve as a guide to the plants 
most frequently the subjects of chloranthy, but refer- 
ence should also be made to preceding and subsequent 
sections, and to that relating to prolification of the 
inflorescence. 
Selinum caruifolium. 
Epilobium hirsutum ! 
Begonia fuchsioides. 
Aquilegia vulgaris. 
Chelidonium majus. 
Corydalis aurea. 
Nymphea Lotus! 
*Brassica oleracea! 
Bunias. 
Hesperis matronalis. 
*Sinapis arvensis ! 
Sisymbrium officinale. 
Erucastrum canariense. 
Diplotaxis tenuifolia. 
Lychnis dioica! 
Cerastium glomeratum ! 
triviale. 
Stellaria media. 
Poterium polygamum. 
Torilis anthriscus. 
Seseli, sp. 
Gomphia, sp. 
Scabiosa Columbaria. 
Dipsacus fullonum. 
Matricaria Parthenium. 
Calendula officinalis. 
Campanula pyramidalis. 
Reseda odorata ! 
Vitis vinifera. 
Dictamnus Fraxinella! 
Triumfetta, sp. ! 
*Tropeolum majus! 
Rhamnus Frangula. 
*Trifolium repens ! 
Lupinus, sp. 
Rosa diversifolia ! 
