PINACE.E 419 



Var. uncinata, Willkomm. 



P. uncinata, Ramond. 



A tree 60-80 ft. high, with a girth of 6-9 ft., differing from 

 the type in the apex of the cone-scales being pyramidal and 

 deflexed with hook-like processes. It is the western form of the 

 species and occupies extensive areas in the mountains of France 

 and Spain, ^ usually at sub-alpine altitudes up to the limit of tree 

 growth. 



The species may be distinguished from other two-leaved 

 pines with resinous, cylindric buds by the greater length of the 

 leaf -sheath and usually by its bushy habit. 



The timber of the variety uncinata is of economic importance 

 and is used for general building purposes in the Pyrenees, the 

 best wood being similar to Scots pine. Elsewhere the timber of 

 P. montana has little value except as fuel. It is of no importance 

 outside its own region, owing to the limited supply and difficulties 

 of extraction. Pine oil, used for medicinal purposes, is distilled 

 from the leaves. 



P. montana and its varieties are grown in the British Isles for 

 cover and for decorative planting, whilst the variety uncinata has 

 been given some attention for plantmg under forest conditions 

 in very cold and exposed places, particularly on mountains in 

 Scotland, to provide shelter for more important trees. It has 

 also been used to some extent for planting on upturned turves on 

 boggy land in Scotland with a fair measure of success. Its ability 

 to withstand wind and considerable cold are its chief recom- 

 mendations. Light sandy gravelly or loamy soils. 



Elwes and Henry, loc. cit. v, 1127 (1910). 



Pinus Montezumae, Lambert. (Fig. 93.) 

 Rough-branched Mexican Pine. 



Pinus Devoniana, Lindley; P. Russelliana, Lindley; P. macrophylla, 

 Lindley; P. filifolia, Lindley ; P. Grenvillese, Gordon ; P. Wincestex'iana, 

 Gordon. 



A tree 70 ft. high in Mexico. Bark reddish brown, rough and 

 irregularly fissured. Young shoots without down, reddish-brown, 

 prominently ridged, covered with the persistent scale leaves. 

 Winter huds ovoid, pointed, about 1 in. long, composed of narrow- 

 lance-shaped, chestnut-brown, fringed scales. Leaves usually 

 in fives, but varying from 3-8 in a cluster according to the vigour 

 of the tree or the climatic conditions under which it has been 

 grown, crowded on the branchlets, lasting about 3 years, bluish- 

 green, erect or spreading, 7-10 in. long, margins minutely toothed, 

 apex a horny point ; resin canals median ; basal sheaths 1 j-2 in. 

 long. Cones solitary or clustered, varying much in size and 



1 Trans. Roy. Scot. Arh. Soc. xxi, 10-15, figs. 1-9 (1908). 



