228 Report upon New or Rare Plants, fyc. 



with somewhat loose flaccid petals, of a very brilliant car- 

 mine, fading into pale rose colour as the blossoms approach 

 decay. The peduncles are slightly glandular; the tube of 

 the calyx ovate, smooth, and the sepals nearly simple, not 

 quite so long as the petals, and coarsely covered with minute 

 glands. 



This was raised by Mr. James Drummond of Cork, by whom 

 plants were sent to the Society's Garden in 1824. The flowers 

 appear in June and July. It has been distributed from the 

 Garden under the name of Drummond's Thornless Rose. It 

 is one of the earliest Roses that blow, and one of the most 

 striking. 



XXXVII. Pyrus arbutifolia. 



P. caule erecto, foliis obovato-oblongis acutis subtus calycibusque tomentosis, 

 corymbis paucifloris foliis brevioribus, fructibus pyriformibus. 



Under this name several different plants are cultivated, 

 which it appears to me necessary to distinguish. Of these, 

 three may be considered varieties of P. arbutifolia, and two 

 essentially distinct species, one of which has been published 

 as such in the Botanical Register. Under P. arbutifolia Bo- 

 tanists comprehend all the plants with downy calyces that 

 are referable to that section of Pyrus which Persoon called 

 Aronia, and which has been more recently distinguished by 

 the name of Adenorachis by M. De Candolle. Which par- 

 ticular variety of this species, or whether either of the two 

 others I am about to characterize, have been intended by 

 various Botanists for their P. arbutifolia, I do not think it is 

 possible to ascertain. I shall therefore assume that the 

 plants to which that name is truly applicable are character- 

 ized as follows. Stem erect, naked. Branches chocolate 



