362 THE GENUS XYSMALOBITIM. 



Trifolium arvense L. Sparingly at Clogber Head. — T. hybridum 

 L. Common in fields. 



ValerianelUt Auricula Dietr. In corn-fields by the sea. 



Silybum Marianum Gaertn. Road-side. 



Cuscuta Trifoiii Bab. Clover-field. 



Cynogiossum officinale L. Waste places by sea-shore. 



Mertensia maritima Don. Sparingly on shores of Dundalk Bay. 



Hyoscyamus niger L. Sea-shore. 



Orobanche Hederce Duby. Plentiful in Castle Woods. — 0. minor 

 L. In same field with Cuscuta Trifoiii. The farmer did not know 

 the name of either plant, but said they both appeared in his fields 

 about three years ago. They are plentiful there now. 



Utricularia minor L. Ardee Bog and Flack. 



Obione jwrtulacoides Moq. Salt-marsh. 



Hydrocharis ^lorsus-rana L. Plentiful. 



Anacharis Alsinastrum Bab. Pond at Barmeath. 



Kpipactis palustris L. Marshy ground. 



Allium, carinatum L. (Fries). A dozen or more plants growing 

 on a grassy bank near Maine House, 1^ mile from Castlebellingham. 

 There used to be a garden next the bank, but it was ploughed up in 

 1880, and the field has been arable land ever since ; so the Allium 

 seems to be naturalized now, though it might have been cultivated 

 once. There may be more plants, as I did not search the ground 

 carefully. I have not observed it elsewhere in the district. 



Juncus obtusiflorus Ehrh. Marshy ground near the sea. 



Potamogeton obtusifolius Mert. & Koch. Flack. 



Cladium Mariscus B. Br. Marshy ground. 



Carex externa Good. Salt-marsh at Clogber Head. 



The three following I have found in other districts : — 



Viola lutea Huds. Dry grassy top of Dunmurry Hill, Co. Kil- 

 dare, 1887. 



Geum rivale L. Damp woods at Rathaugan, Co. Kildare, 1887. 



Atriplex arenaria Woods. Sea-shore near Newcastle, Co. Down, 

 1890. 



THE GENUS XYSMALOB1UM. 



By G. F. Scott Elliot, M.A., F.L.S. 



This small genus is closely related to Gomphocarpm, and 

 may be regarded as an offshoot from the section Pachycarpw. 

 The eleven species represented in the Kew and British Museum 

 Herbaria show a very interesting distribution. None are (so 

 far as one can judge from the imperfect labels of most col- 

 lectors) found in the dry south-western part of Cape Colony, or 

 in the arid plains of the Karroo ; but the mountain-summits of 

 Caffraria, the table-land of the Transvaal, Basutoland, Griqualand 

 East, Natal, Zululand, and the Shire Highlands are all inhabited 

 by one or more of the wide-ranging species. Two species are 



