334 



PHILOSOPHICAL NOTES ON 



terminating in an anther bud, not unlike the glandular termina- 

 tions of the nectaries of Parnassia, Further on, the filaments of 

 the stamens of Citrus become more or less connate and grouped 

 as we see them in the mature flower, the form of the stamen- 

 whorl being a broken cup, which, if it were dwarfed and the anthers 

 suppressed, would form a second disk outside the disk proper, as 

 it was while the young anthers were in the stage of nipples. 



The Citrus, the Ruta, and the P.eonia Moutan. 



AVhat is the morphological position of the orange-peel ? 



As far as I am able to see there are three possible hypotheses 

 of the origin of the peel : — 



(a.) That it is the outer lamina of the enclosed carpels, 

 just as one might say the upper and lower surface of a 

 leaf, the lower or dorsal surface corresponding to the 

 outer surface of the peel, while the pulp surface corre- 

 sponds to the upper or neutral surface of the leaf. This 

 view I find is accepted by several botanists. Let us, how- 



Fig. 139. Ovary and disk of Ruta Fig. 140. Portion of " Laroo " orange, 

 yraveolens (Payer's " Traite d'orgauo- showing considerable space (a) 

 genie de la Fleur," pi. 15). between the peel and the pulp (" Or, 



and Jiem, of India, &c.," pi. 136), 



