Sorbus arranensis rupicola") which is still found on Holy Isle. This hybrid species interbred with the rowan/mountain ash ("Sorbus aucuparia") to produce "S. arranesis". The bastard mountain ash ("Sorbus pseudofennica") arose from a further cross between "S. arranensis" and the mountain ash ("S. aucuparia"). Smart showed by using physical characteristics that the species were separate and not a result of random variation. Some overlap does however occur and this suggests that some hybridising may occur between the two species. Sorbus arranensis Sorbus arranensis, sometimes referred to as the Scottish or Arran whitebeam is a species of plant in the family Rosaceae. It
Sorbus aucuparia include 'Apricot Queen', 'Brilliant Yellow', 'Chamois Glow', 'Pink Queen', and 'Salmon Queen'. The leaves were fermented with leaves of sweet gale and oak bark to create herb beer. Fruit are eaten as a mash in small amounts against lack of appetite or an upset stomach and stimulate production of gastric acid. In folk medicine they are used as a laxative, against rheumatism and kidney disease, and as a gargled juice against hoarseness. Wood of "S. aucuparia" is used for cartwright's work, turner's work, and woodcarving. Wood can be used from trees as young as 20 years. The sapwood is golden