— 400 — 



The characters that distinguish the typical arvensis from 

 the typical tricolor are the following (the first named characters 

 are the most significant) : 



Viola arvensis typica: parviflora stigma non labellatum, petala 

 albida, stipulae pinnatifidae, stylus non maculatus. 



Viola tricolor typica: grandiflora, stigma non labellatum, petala 

 violacea (lutea, rosea, alba), stipulae palmatisectae, stylus 

 maculatus. 



Viola tricolor maritima (typica): Folia parva, carnosula, 

 caules atropurpurei, caespitosi, prostrati. 



VIII. Notes on the Geographical Distribution of V. arvensis 

 and V. tricolor in Denmark. 



On a journey through Jutland in early summer 1921, under- 

 taken with the support from the Botanisk Rejsefond in order 

 to examine the variation of the Danish Viola-species belonging 

 to the Melanium section, I had occasion to make some observ- 

 ations concerning the distribution of the types. 



One of my routes stretched from Aabenraa in Eastern South- 

 Jutland to Flensborg Fjord. From here it ran across South- Jut- 

 land to Tønder and Højer on the west coast. Further northwards 

 along the coast to Hjerpsted and from here eastwards to Visby. 



Another route stretched from Varde westwards through the 

 heathery countries to the North Sea and northwards through 

 the dunes along the coast and through the heathery countries 

 to Nymindegab at the southern end of Ringkøbing Fjord. From 

 Ringkøbing westwards through the fertile Holmsland between 

 Ringkøbing Fjord and Stadil Fjord and southwards through the 

 sandy isthmus Holmsland Klit between Ringkøbing Fjord and 

 the North Sea. Further northwards along the dunes almost to 

 Nissum Fjord and eastwards to Ulfborg. 



A third route stretched from Viborg through the reclaimed 

 heathery territories in Mid- Jutland north eastwards to Hobro at 

 the east coast and northwards to East- Himmerland, which is 

 very abundant in lime. The lime in most places is very near 

 to the surface of the ground, and at several places it juts out 

 in lime-hills. Southwards again through East- Jutland via Had- 

 sund to Randers and south-east to Kalø and Mols with the sandy 



