310 METAMORPHY. 
The following list will serve to show what plants 
are most subject to this anomaly. It is difficult to 
draw any accurate inference from this enumeration, 
but attention may be called to the frequency of this 
occurrence in certain plants, such as the Sempervivum, 
the wallflower, the poppy, and the heath. Why these 
plants should specially be subject to these changes 
cannot be at present stated. 
By the student of animal physiology such a change 
as above described—equivalent to the substitution of 
an ovary or a uterus for a testis—would be looked 
on as next to impossible; the simpler and less spe- 
cialised structure of plants renders such a change in 
them far more easy of comprehension. 
Thalictrum minus. Myrtus, sp. 
Delphinium elatum. Campanula rapunculoides. 
Magnolia fuscata. Polemonium ceruleum. 
Bocconia cordata. Gentiana Amarella., 
*Papaver bracteatum ! *Hyrica Tetralix. 
3 somniferum ! Stachys germanica. 
nudicaule. Primula acaulis. 
Dionza muscipula ! Rumex crispus. 
Barbarea vulgaris. *Salix, sp. plur.! 
*Cheiranthus Cheiri! Euphorbia esula. 
Cochlearia Armoracia. Glochidion. 
Tropeolum majus. Asphodelus ramosus. 
Citrus Aurantium. Amaryllis. 
*Sempervivum tectorum ! Lilium tigrinum! 
montanum. longiflorum. 
Begonia frigida! *Tulipa Gesneriana ! 
Cucumis, sp. var. cult. plurim.! 
Cucurbita Pepo. Hemerocallis. 
Pyrus Malus. Zea Mays. 
Rosa arvensis ! Bambusa, sp. 
Saxifraga crassifolia ! 
Pistillody of the ovule—An instance of this extraordi- 
nary transformation in the carnation, as observed by 
the Rev. Mr. Berkeley, is given at p. 268. 
‘Flora (Bot. Zeit.),’ xxiv, 1841, p. 340, Salix alba. Henschel, ‘ Flora 
(Bot. Zeit.),’ 1832, t. xv, p. 253, 8. cinerea. Hartmann, ‘ Flora (Bot. Zeit.),’ 
xxiv, p. 199, S. nigricans. Meyer, C. A., ‘ Bull. Phys. Math..,’ t. x, S. alba. 
