Adams. — Species of Pinus now growing in New Zealand. 217 



specific distinctions. One very remarkable fact is that our Rocky Mountain 

 lodgepole pine (P. Murrayana) is a distinctly narrow-crowned tree, while 

 the Pacific Slope form of it is distinctly a broad-crowned tree, there being 

 no other essential differences." 



Here in New Zealand we have another very marked difference in the two 

 trees, as imder the same conditions the coastal or broad-top tree grows 

 everywhere much faster than the mountain or spire-shaped tree. 



Two trees measured here, and fairly representing the best growth of each, 

 give the following result : P. contorta, 49 ft.~, and P. Murrayana, 32 ft. In 

 the plantations here there are probably fifty trees of each of the same age, 

 so that the difference in the rate of growth is not accidental. 



Pinus densifiora S. & Z. 



A tree planted under this name in 1890 is now 18 ft. high. A common 

 forest-tree in Japan, this tree has not proved successful here. 



Pinus edulis Engelm. 



This New Mexican pine is represented in my collection by several 

 trees, some of which are now 12 ft. high, and bear cones. The seeds are 

 edible. 



Pinus halepensis Mill. 



This was early introduced into New Zealand, as trees were growing in 

 1868 both at Governor's Bay, Canterbury, and at the Hutt, Wellington, 

 and were then nearly 4 ft. high. A tree of this species was 36 ft. 6 in. in 

 height in 1885 at Governor's Bay. 



Pinus laricio Poir. 



This tree is grown successfully in many places in New Zealand. A tree 

 planted at Greendale in 1877 is now 62 ft. high, and of a fine form. 



Pinus leucodermis Antoine. 



The white bark is the chief feature which distinguishes this pine from 

 P. austriaca. By some it is considered only a variety of that pine. A 

 tree raised from seed in 1904, presented to me by Dr. L. Cockayne, F.R.S., 

 is now 6 ft. 6 in. high. 



*&•' 



Pinus monophylla Torr. & Frem. 



This western American pine was cultivated in Duncan's nursery (Christ- 

 church) many years ago, but I do not know whether there are any living 

 examples in New Zealand at the present time. This should properly not 

 come in this class, v/ith two leaves in a sheath, since it has merely one and 

 not two. In habit it is a low round-headed tree 8 ft. to 45 ft. high. Its 

 usual habitat is very dry stations of a desert character. 



Pinus montana Mill. 



This was early introduced in one or other of its forms, and large bushes 

 of this species are growing in the Christchurch Botanical Gardens. 



Pinus mugho Poir. 



Some consider this only a variety of the last species. At Greendale 

 P. mugho grows much faster than P. montana. 



