By Professor Lindley. 



2S1 



listemon lanceolatus 20, and the Cape plants, Pentzia flabelli- 

 formis, and Salvia aurea, from 14 to 15 years without being killed. 

 This fact is unparalleled in the records of British gardens, even in 

 the case of that of Mrs. Hamilton Nesbitt, in East Lothian, of 

 which some account will be found in the Transactions of the So- 

 ciety, Vol. VII. p. 31. It is obvious, that such exceptions must be 

 left out of all calculations, as to the capability of plants becoming 

 naturalized in a given climate. 



Of Australian plants, none seem to have been able to bear so 

 much as even -f 12°, except Billardiera longiflora, which is recorded 

 at Glasgow to have borne — 1° at the foot of a south wall, and a 

 Eucalyptus, called alpina, which escaped at Norwich ; it will, 

 however, be probably found that this circumstance is, in both cases, 

 attributable to some unexplained cause. It, therefore, seems use- 

 less to attempt to naturalize New Holland plants in the midland and 

 northern parts of England. On the coast of South Wales, where the 

 thermometer did not fall below + 15°, Leptospermum lanigerum is 

 the only species which appears to have survived ; at Carclew, in Corn- 

 wall, where the climate seems generally to be very mild, although 

 the temperature is reported to have been + 12°, almost all the New 

 Holland and Van Diemen's Land plants either perished outright 

 or were irrecoverably damaged ; the only exceptions being Acacia 

 stricta, affinis, sophora, and diffusa, Callitris cupressiformis, Corraea 

 alba, Callistemon lanceolatus, Grevillea rosmarini folia, Leptos- 

 permum ambiguum, and Sollya heterophylla. It is only in such 

 favoured spots as Mr. Fox's garden at Falmouth, and in the mild 

 climate of Ireland, that any considerable number of Australian 

 plants have proved really hardy, and even in those places a great 

 many species died. 



Upon the plants of Neiv Zealand there is little to remark, except 

 that there seems no probability of their (in many cases) acquiring a 

 permanent station in these islands. Phormium tenax, the New 

 Zealand flax plant, escaped in a swamp at Carclew, a circumstance 



