Salf-Hardy Plants in Arran. 391 



2. The Twiggy or Manna Gum (E. viminalis). — This 

 may be called the weeping blue gum, for M'liile it differs 

 from the blue gum in the leaves being small and roundish, 

 and in the branches being very slender, the leaves much 

 resemble the blue gum in perfume, bloom, and in hue, 

 though this is somewhat more of a plum colour. This 

 species is hardy ; a large tree grows at "Whittinghame, 

 East Lothian, and a young specimen has been planted this 

 year at Lamlash. It is named viriiinaUs, from its slender 

 branches, and " manna gum," from manna being obtained 

 from it. 



3. The Almond-leaved Gum {^E. amygdalino). — This is 

 said to be one of the tallest trees in the world, growing, in 

 some instances, to the height of more than 450 feet, A 

 tree of this species has grown at Cromla, Corrie, for about 

 fourteen years. It is somewhat slow in growth, being only 

 about 25 feet in height and 13 inches in girth. This is 

 more hardy than the blue gum, but not so hardy as some 

 other species. It is named from the leaves resembling 

 those of the almond tree. This and the blue gum are 

 the species from which the oil of commerce is principally 

 obtained. 



4. The White Gum {E. iwMcifiora, syn. coriacea). — In 

 1879 I received seeds of this species from Mr Bailey, 

 Government Botanist, Queensland ; it had been gathered 

 on the Blue Mountains, New South Wales, and was sown 

 at once. The following year it was planted at Craigyard, 

 Lamlash. It is already 18i feet in height, and 7i inches 

 in girth, and probably will one day be the tallest tree of 

 any kind in Scotland. It is so hardy that not a leaf was 

 browned in the severe winter of 1880-81. The leaves are 

 large, approaching the size of those of the blue gum, and 

 are covered with a whitish bloom. It received its name 

 from the whiteness of the trunk after the annual shedding 

 of the bark. It is a native of Tasmania, and the white 

 trunks give a peculiar character to the forests of that great 

 island. 



5. The Alpine Gum {E. cdpina). — This tree is an 

 interesting and important addition to the forestry of 

 Arran, as it is quite different in habit from any of the 

 gums formerly introduced. The leaf is large, thick, and 



