Heritable Pelorias. - 225 



Peloric flowers occur as chance anomalies in a large 

 number of plants. A speciment of Scrophiilaria nodosa 

 which I have had growing for the last ten years pro- 

 duced them abundantly. On the other hand my cul- 

 tures of Antirrh'uium iiiajus although of twelve years 

 duration and carefully guarded gave rise to no UKjre 

 than two peloric flowers, one of whicli is shown in Fig. 

 43A. Both sprang from the middle of the racemes, that 

 is, they were lateral. I have also observed occasional 

 cases of peloria on Aesculus Hippocastanwn, Melain- 

 pyriini pratense, Orohanche Galii,^ Cytisus Labiirmiin, 

 etc. In my cultures of 1892 a peloric flower occurred 

 on a plant of Lnpinus hit ens. The tube-shaped peloric 

 flowers of the cultivated Calceolarias are also well known. 

 In these and similar cases the mode of inheritance has 

 still to be investigated. In this respect the observations 

 of Peyritsch are of great importance He has shown 

 that in the case of peloria in Leonuriis Cardiaca, an an- 

 nual Labiate, the anomaly can be reproduced from seed 

 whether this originates from the peloric or the normal 

 flowers of the same plant. 



Feyritsch's memoir is one of the most valuable of 

 those which deal with peloria, and is indeed an almost 

 complete monograph so far as the Labiates are con- 

 cerned.- He has also investigated the influence of the 

 environment on the anomaly as occurring in a series 

 of Labiates.^ I select the following observations for 

 notice here : 



^ See also W. F. R. Surtngar, Orohanche Gain, Ned. Kriiidk. 

 Archief. 1874, Vol. I, p. 330, Plate 18. 



^ T. Peyritsch. Uehcr Pcloricn hci Lahiafcn, Sitzber. d. k. Akad. 

 d. Wis?.. Vienna, Vol. XT., Part T, 1869, p. 34.^ Pk-^tes T-VT ; and 

 Vol. XLTI. 1st secticn, 1870, p. 497, Plates I-Vlll. 



"J. Peyritsch, Unfcrsuch. i'lher die Actiologic pclorischcr BU'iicn- 



