Il6 YORKSHIRE NATURALISTS' UNION. 



The horizontal distribution of the two species looked at 

 from the point of river-basin distribution is somewhat similar: 

 S. aquatica standing recorded from all five vice-counties, and 

 S. nemorum from all except the East Riding (S.E. Yorks.), and 

 yet the area — projected on the flat — occupied by S. nemonmi 

 is much the larger. Their areas overlap one another, but the 

 vertical range of S. nemorum is the wider, not attaining its 

 limit upwards in the doughs and vales amongst the hills until 

 1500 or 1600 feet is reached, whereas S. aquatica is more 

 a plant of the central plain and lower lands up to 400 feet 

 only. S. netnortmi on the other hand descends on the banks 

 of the larger rivers as low as 100 feet. 



Spergula arvensis var. b. vulgaris Bc^nn. In a turnip field 

 east of Wetherby. F. A. Lees. M.W, York. 



This form, in spite of its varietal name implying its 

 commonness, is much scarcer apparently — or perhaps only 

 more thinly scattered — than var. a. sativa Boenn; and maybe 

 known at once from that gray-green clammy glandulous plant 

 by the brighter hue of its less viscid foliage, and by its seeds 

 (which form a beautiful object for the microscope) being very 

 imperfectly winged, and covered with curious club-shaped 

 papillae, pinky white when immature, turning brownish black 

 as the seed becomes quite ripe. Members should keep on 

 the look out for this singular variety during the next summer, 

 as its Yorkshire distribution has yet to be satisfactorily made 

 out. It is said to be more a plant of potato or fodder-fields 

 than of those of the cereals. 



Claytonia alsinoides Sims. 



Alien. In a wood at Marsden. W. West. S.W. York. 



Geranium pyrenaicum Z. Bank by the highroad-side a little 

 out of Coneysthorpe towards Malton. M. B. Slater. 



N.E. York. 



G. columbinum L. Sandy lanes above the bridge at Spofforth; 

 bank at Flint Mill near Wetherby; and by the roadside near 

 Kirk Deighton. F. A. Lees and J. Jackson. M.W. York. 



Trans. Y.N.U., 1880 (pub. 1882). Series E 



