CHAP. II, 



BRITISH ISLANDS, 



125 



In 1826 and 1827. 

 ^bies Douglas//. 

 A^cer circinatum. 



macrophyllum. 

 Amelanchicr florida. 



parvifolia. 

 Arbutus procera. 

 ^rctostaphylos tomentosa. 

 Berberis /4quifolium. 



glumacea. 

 Caprifolium ciliosum. 



Douglas//. 



hispidulum. 

 Carya nigro-cathartica. 

 *Ceanothus collinus. 



# ellipticus. 

 Garrya elliptica. 

 Gaulther/a Shallon. 

 # Z,aurus occidentals. 

 Pinus Lambert/a//tf. 



ponderosa. 

 Purshm tridentata. 

 Ribes viscosissimum. 



aureum. 



cereum. 



divaricatum. 



echinatum. 



Ribes niveum. 



petiolare. 



sanguineum. 

 Pubus nutkanus. 



spectabilis. 

 Salvia carnosa [Audibert/a in- 



cana.] 

 iSpirae v a ariaefolia. 

 Faccinium ovatum. 



In 1831. 



^ v bies amabilis, 



grandis. 



Menzies//, 



nobilis. 

 Clematis Douglas//. 

 Pinus monticola. 



mont. var. with red cones. 



Sabin/tfW. 

 Pyrus rivularis. 

 Ribes glutinosum. 



malvaceum, 



speciosum. 



In 1832. 

 Pupinus albifrons. 

 Pinus Sabin/awa var. 



In 1833. 

 lacustre. Pinus insignis. 



Of the above specimens, which were all introduced by seeds, the 

 three marked with a * did not vegetate. Some species of Posa 

 and Crataegus, not included in the above list, have vegetated, 

 but are not enumerated, as they have not yet flowered j and 

 consequently have not yet been named or identified. 



To enable our readers to take a general view of the various 

 details respecting introductions given in the preceding pages, we 

 shall next endeavour to generalise them ; first, numerically; and, 

 secondly, geographically. For the first object, we have had 

 from our Hortas Britannicus an enumeration made of the num- 

 ber of species introduced in each decade, from the beginning of 

 the 16th century to the end of the year 1830. We do not give 

 this enumeration as perfectly accurate; because many of the 

 species in our catalogue, as in every other, are doubtful ; but it 

 is not of much consequence whether it be perfectly accurate or 

 not ; it is sufficiently so to show the ratio of the increase of the 

 introductions, from the earliest periods of which we have any 

 record of them, up to the present time. 



