CHAP. II. 



BRITISH ISLANDS. 



125 



In 1826 and 1827. 

 Douglas//. 

 circinatum. 



macroph^llum. 

 Amel&nchier florida. 



parvifolia. 

 Arbutus procera. 

 y^rctostaphylos tomentosa. 

 BMeris ^4quif61ium. 



glumacea. 

 Caprifolium ciliosum. 



Douglas//. 



hispidulum. 

 Carya nigro-cathartica. 

 *Ceanothus collinus. 



*ellipticus. 

 Garrya elliptica. 

 Gaulther/a Shallon. 

 *aurus occidentalis. 

 Plnus Lambertra/zff. 



ponderosa. 

 Pursh/fl tridentata. 

 Rlbes viscosissimum. 



Rlbes niveum. 



petiolare. 



sanguineum. 

 7?ubus nutkrmus. 



spectabilis. 

 iSalvia carnosa [Audibert/a in- 



ctlna.] 



<Spirae x a ^riaefolia. 

 Faccinium ovatum. 



In 1831. 



A^bies amabilis. 



grandis. 



MenzieszV. 



nobilis. 



Clematis Douglas//. 

 Pinus monticola. 



mont. var. with red cones. 



Sab'mmna. 

 JPyrus rivularis. 

 Rlbes glutin6sum. 



TTzalvaceum. 



speciosum. 



In 1832. 



Z/upinus albifrons. 

 Pin us S&binidna var. 



irnguum, 

 lacustre. 



aureum. 

 cereum. 

 divaricatum. 

 echinatuni. 



In 1833. 

 Pinus insignis. 



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

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

 and Cratae v gus, not included in the above list, have vegetated, 

 but are not enumerated, as they have not yet flowered,* 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 Hortus 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. 



