144 THE BOOK OF EVERGREENS. 



51. P. longifolia, Roxburgh. LONG-LEAVED PINE. 

 This species forms a splendid plant for pot culture, but 

 is entirely too tender for out-door cultivation in our climate. 

 It is a native of the Himalayas, growing from 40 to 100 

 feet in height. It produces an abundant supply of very 

 fragrant resin, and on this account the young plants are 

 very liable to be destroyed by field mice. A few years 

 since we had several fine specimens in a cold frame, along 

 with other species of the Conifer ; but upon examination 

 in the spring found every vestige of bark eaten from our 

 plants of P. longifolia^ whilst the others remained un- 

 touched. 



52. P, Parryana, Gordon. Is from the Sierra Nevada 

 in Upper California, forming a large-sized tree with long, 

 slender, wavy leaves, and bright, glossy, yellow cones. It 

 resembles P. Benthamiana, and may prove hardy here. 



53. P, patula, Schiefle. Is one of the most ex- 

 quisitely beautiful trees known to botanists, and in a large 

 pot or tub forms an excellent representation of a fountain. 

 It is quite abundant in some parts of Mexico, particularly 

 in the colder regions, where it grows to the height of from 

 60 to 80 feet, and forms the most perfect specimen of a 

 graceful, drooping Conifer that one can imagine. 



A specimen of this species in our own collection, after 

 having arrived at the height of 6 feet, was accidentally 

 overlooked in watering, and consequently soon perished ; 

 thus, by a dearly bought experience, we learned a useful 

 lesson in regard to growing Conifers in pots. 



Var. stricta, Bentham, and var, macrocarpa, Schiede. 

 The former with shorter and stiffer foliage, and the lat- 

 ter with very large cones, are possibly not more handsome 

 than the graceful form of the species. 



54. P. Pine can a , Gordon. Is another of the graceful 

 Pines for which. Mexico is so justly celebrated. It gen- 



