PINES WITH FIVE LEAVES IN A SHEATH. 173 



Pinus Torreyana. — A tall Pino sparingly branched and having 

 its foliage tufted at the extremities of the branches. The leaves are 

 from 8 to 10 inches long, stiff, and pungent ; the cones resemble 

 and are as large as those of the Stone Pine, P. pinea. It is a 

 native of lower California, where it was first discovered by Dr. Parry, 

 and named by him in compliment to Dr. Torrey, the eminent American 

 Botanist ; ' it was subsequently found by Mr. William Lobb, who sent 

 cones and dried specimens to England in 1860, when it was described 

 by Dr. Lindley as a new species under the name of P. loplwsperma. 



Section III. — Pines with Five Leaves in a Sheath. 



In this section Pinus Gembra and P. Strobus may be regarded 

 as the types of the kinds sufficiently hardy for landscape and 

 ornamental planting; the former representing a group of four or 

 five species * in which a pyramidal compact habit, profusion of 

 foliage, and small erect cones bearing wingless seeds, are the most 

 obvious characteristics, while the latter represents several large and 

 tall trees t with spreading branches, long leaves, elongated tapering 

 cones that are quite pendulous when full grown, and bearing winged 

 seeds. Besides these, there are several Mexican species occasionally 

 met with in gardens in the south and west of England which are 

 tender, and rarely arrive at maturity in this country.]: The timber 

 of the hardy Pines in this section is distinguished by its whiteness, 

 softness, and fineness in grain, that of P. Strobus being the most 

 in repute on account of its durability and cheapness; this is the 

 "White Pine" of American commerce. The resinous products are 

 abundant, but are of less commercial importance than those of the 

 Pines in the other sections. The species are very unequally distri- 

 buted; P. Gembra and P. Strobus have extensive ranges in the 

 eastern and western continents respectively. P. excelsa is confined to 

 the Himalayas, and under the name of P. Peuce to the mountains of 

 Roumelia and Macedonia in south-west Europe; there are two species 

 in Japan and northern China, and four in California and the Eocky 

 Mountains; all the others are natives of Mexico, with the exception of 

 P. occidentalis (St. Domingo), P. filifolia, and P. tenuifolia (Guatemala). 



* Pinus Cemhra, P. flexilis, P. koraiensis, and P. parviflom. 



+ Firms excelsa, P. Zambertiana, P. monticola, and P. Strobus. 



% They form a separate siib-section, of which Pinus pseudo-strobus may be regarded as the 

 type. 



