14 PINES 



North American trees refers to what has been called 

 by others the Colorado variety of Ayacahuite, a 

 tree growing on higher slopes, and with the natural 

 resultant of sporting shorter leaves and smaller 

 cones, as the P. Strobiformis. It seems rather a 

 dull performance to give a Greco-Roman name to 

 such a stranger, and to a variety of a tree that 

 enjoys such a crisp-sounding vernacular appellation 

 of its own. 



With the remark that the Lambertiana carries the 

 hall-mark of its identity in the grassy green colour 

 of its leaves, and that the Buonapartea or Veitchii^ 

 a variety of the Ayacahuite, elects to have its cone 

 scales incurved rather reflexed to assert an indepen- 

 dence, we approach towards the end of our dis- 

 sertation on the subject of these white, soft-wood 

 Pines, the Strobi Group. 



To sum up some points of difference : the P. Ayaca- 

 huite must be dissociated from the P. Excelsa by the 

 conspicuous down it exhibits on the twigs, a symptom 

 in marked contrast to the smooth surface noticeable 

 on P. Excelsa branchlets. 



From the Pinus Strobus it can be identified by its 

 longer leaves and dense pubescence. We might also 

 notice that whereas there is every probability of an 

 abundance of cones in the vicinity of the Weymouth, 

 the mighty cone of the Ayacahuite is still a rare 

 sight with us. 



For a prompt recognition of the Lambertiana, the 

 colour-test observance should be relied on. The 

 bright yellow-grass-green hue of its leaves is quite^ 

 unlike any other colour scheme of the group. 



Before leaving the subject of the Ayacahuite, there 

 is still another Pine, the P. Armandi, that may easily 

 delude the more unsophisticated, in the absence of 

 cone clue, into the belief that he is sampling an 

 Ayacahuite. It is written down as not belonging to 



