2 ABNORMAL CONDITIONS IN PLANTS. 



Class II. DUPLICITY. 



Subclass I. Dichotomy. 



3. A frond of the common Hart V tongue Fern, dichotomous in 



its upper part from fission. Presented by Mr. Clift, 1808. 



4. A dichotomous ear of Wheat^ in which the culm is single. 



Presented by Mr. Sear son, 1871. 



Subclass II. Homologous union. 



a. Union of stems (Fasciatiori). 



5. A double head of Cowslip-flowers with the flower-stalks 



slightly adherent through their entire length. 



Presented by Mrs. Scott, 1872. 



50. A triple head of Teasel, probably produced by the cohesion 

 of three axes. 



b. Union of fruit (Syncarpy). 



6. Two Quinces on a single peduncle united by fusion of their 



sarcocarps. Presented by W. J. B. Smith, Esq., 1858. 



7. Two Cherries united in the same manner. 



Presented by T. H. Stewart, Esq. 



8. A similar specimen. 



Presented by Prescott G. Hewett, Esq., 1871. 



9. Two Apples united in the same manner. Hunterian. 



10. Two Apples similarly united, divided vertically to show the 



divergence of the axes of the two fruits. The tree from 

 which this fruit was obtained produced a crop of similar 

 fruit every year. Presented by Sir A. Carlisle, 1829. 



1 1 . Two small Cucumbers on a single peduncle, adherent through 



their entire length, cut through transversely to show the 

 manner in which they are united. 



Presented by W. J. B. Smith, Esq. 



12. Two Cucumbers similarly united throughout two thirds of 



their length. Presented by W. Clift, Esq., 1829. 



1.3. Two Cucumbers similarly united; the growth of one has 

 been arrested, however, at a very early stage. 



Hunterian. 



