1903- Notes. 219 



Jungermannia capitata Hook, in Co. Down. 



I found this liverwort, which is an addition to our county list, growing 

 on patches of moss on rocks by the roadside at Tonaghmore, near Saint- 

 fieli, in May, 1900. It was in ripe fruit and sc could be distinguished 

 fromy, bicrenata, which has been found in similar localities in the county 

 on rocks which have a slight covering of soil and other mosses, not 

 necessarily sub-alpine. 



C. H. Wadd:^!.!*. 



Saintfield. 



Thuidium delicatulum in Co. Down. 



I found a second Irish station for this moss, Thuidhim delicatuitun, 

 Mitten, among the sandhills near the sea at Ballykinler, Co. Down, in 

 September, 1900. It was growing in great abundance, in appearance 

 like a more delicate form of the well-known T. tamarisciiium. Canon 

 Lett and I first found it in Ireland, in a similar locality to the present, 

 at Magilligan, Co. Derry. While this species is stated not to be confined 

 to sandhills by the coast, in Scotland and Ireland these seem to be its 

 favourite habitats, perhaps because as a southern species it is less liable 

 to frost there. 



C. H. WADDE!.!,. 



Saintfield, 



Arum maculatum again. 



Not being a confirmed botanist I have not taken the particular notice 

 of the marking on the leaves of Arum viacidatiim until the correspon- 

 dence in recent issues of the Irish Naturalist drew my attention to the 

 subject. During a walk a few weeks past in the neighbourhood of 

 Rathfarnham I noticed a plant which bore leaves with distinct white, 

 or creamy white blotches, resembling in a marked degree the variegation 

 on the leaves of that useful cultivated store plant, Caladium argyrites. 

 Further search revealed quite a number of plants with similar markings 

 interspersed amongst ethers with the usual green leaves. As all 

 appeared to be growing under the same conditions of soil, aspect, 

 moisture, and exposure, it seems difficult to account for the diff"erence 

 in the leaves except on the assumption that the plants bearing them are 

 of two distinct varieties. If this is so would it not also explain the 

 occurrence of the purple or brown blotches from which the plant derives 

 its specific name? Further observation, and experiments in raising 

 seedlings from the three forms, appears to be necessary to elucidate this 

 interesting point. 



W. F. GUNN. 



Dublin. 



