Transactions of the Horticultiiral Society. 51 



clivities of the Rocky Mountains, between the parallel of 4-6° 

 and 52° N. latitude. This magnificent species ought to have 

 a place in the gardens of the curious, were it only on account 

 of it dissimilarity to any of the genus." 



Seeds brought to England by Mr. Douglas in October, 

 1827 ; and the plants raised and flowered in the garden of the 

 Horticultural Society in 1828. 



R. cereum. A more humble bush than either of the two 

 former, and of a slender habit, but still attaining the height of 

 5 or 6 ft., with white smooth bark on the old branches, and 

 the young shoots covered with a brown viscid scentless glu- 

 tinous substance. Flowers white, and berries red. Hardy, 

 and of easy culture, but not very beautiful. Seeds received 

 in October, 1826; the plants raised from which flowered in 

 April, 1828. 



" On dry exposed decayed granite rocks or schist, through- 

 out the chain of the river Columbia, from the Great Falls 

 45° 46' 17" N. lat. to the source of that stream in the Rocky 

 Mountains, 52° T 9". This is a common shrub, flowering in 

 March and April, and ripening its fruit in June." 



R. petiolare. Resembles U. nigrum, particularly in its 

 fruit. Seeds brought to the Horticultural Society in October, 

 1827; but they had not flowered when Mr. Douglas com- 

 posed his paper, in April, 1829. We understand they have 

 since flowered, and that the colour is not conspicuous. 



" In deposits of decayed vegetable soil, washed down by 

 the torrents from higher altitudes of the mountains, among 

 coppice wood on the western base of the Rocky Mountains, 

 from the 48° to the 52° N. lat. this species is frequently met 

 with ; and it is equally common on similar altitudes ancl situ- 

 ations in the high mountains of North-west America." 



R. divaricatum. A robust bush of erect habit, 6 or 8 ft. 

 high, with whitish flowers and black berries ; pleasant to the 

 taste. Flowered in the garden of the Horticultural Society 

 in April, 1828. " A common bush on the banks of streams 

 near Indian villages, on the North-west coast of America, 

 from the 45° to the 52° N. lat." 



R. irriguum. A tall strong species, sometimes 10 ft. high, 

 with white bark, cordate leaves, bell-shaped flowers [colour?], 

 and spherical berries half an inch in diameter [colour?]; 

 smootli, juicy, with a very pleasant flavour : " A constant 

 inhabitant of moist mountain rocks, near springs and streams, 

 flowering in May and ripening its fruit in July. On the Blue 

 Mountains in 46'^ 33' it is very common ; also on hills on the 

 banks of Spokan River. Of all the species which came under 

 my observation during my journeys in America, this is the 



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