154 



ROYAL HORTICULTURAL SOCIETY. 



Crataegus purpurea altaica. 



Aronia. 



tanacetifolia. 



Pyracantha. 



crenulata. 



Ryrus communis fol. var. 



Mains. 



fol. var. 



sinensis. 



Aucuparia pendula. 



fructu luteo. 



spuria pendula. 



arbutifolia serotina. 



Chamcemespilus. 



XXXI. On two species of Rudgea. 

 By the Rev. M. J. Berkeley, M.A., F.L.S. 



The genus Rudgea, which at the time it was proposed by Salisbury 

 consisted of two species only, is now of some magnitude, having 

 received a number of outcasts from other genera, especially Coffea 

 and Rsychotria. The points of distinction are so well indicated in 

 a paper by Mr. Bentham, in the twenty-third volume of the 

 'Linnaea,' a journal which is not accessible to every one, that it 

 can scarcely be unacceptable to give a translation of the passage 

 at length. 



"In Coffea arabica and the few species really congeneric, the 

 aestivation of the corolla is contortoplicate, and the ovules fixed 

 laterally to the dissepiment; in Rudgea the aestivation of the 

 corolla is valvate, and the ovules erect from the base of the cells, 

 as in Rsychotria and Palicourea. The genus Rudgea is not easily 

 capable of strict distinction from these in words, and is connected 

 with either by a few intermediate species. Most, however, are 

 easily distinguished by the habit, stipules, calyx, corolla, and fruit. 

 The stipules, at least the upper ones, are adorned with frequent 

 cartilaginous cilia or lacerations, either marginal or dorsal, which 

 at length frequently vanish. The teeth of the calyx are distinct in 

 all the species with which I am acquainted, with the exception of 

 Rudgea longiflora alone, where they are connected at the base into 

 a short cup-shaped body. The corolla is infundibuliform, some- 



