260 PHYLLODY 
In the preceding instances the foliaceous condition 
has pervaded the entire pistil, or at any rate the basal 


Fic. 159.—Flower of Triumfetta, sp., carpels represented by five 
leaves. 
portion or ovary, and it may be noticed that the ovary 
is thus shown to consist in some cases of the sheath 
of the leaf, as in Aquilegia ; in other cases of the blade, 
as in Cerasus, Daucus, &e. 
There are cases, however, in which a part only 
of the pistillary structure thus becomes foliaceous. 
Linnezeus, ‘ Prolepsis,’ § 9, mentions some flowers of 
Carduus heterophyllus and C. tataricus in which the 
style had grown into two green leaflets, and in which 
the calyx and corolla were also leaf-like. A very 
singular instance is recorded by Baillon,’ wherein the 
pistil of Trifolium repens consisted of three carpels, 
either separate, or combined so as to form a one-celled 
ovary with three parietal, pluri-ovulate placentz ; the 
ovary in these flowers was formed of the basal vagini- 
form part of the leaf; the three styles were formed by 
the petioles, while the stigmas were represented by 
tri-foholate leaves. The back of the leaf in these 
cases 1s usually directed away from the centre of the 
1 « Adansonia,’ iv, p. 70. A similar deviation has been observed by 
M. van Tieghem in the ovary of Tropeolum majus, ‘ Bull. Soc. Bot. Fr.,’ 
1865; p, 411. 
