346 



PARKS AND PLEASURE-GROUNDS, 



in regular whorls ; of 129 and 132, densely set. The color of 125 is a 

 silvery green ; of 124, glaucous; of 115, 116, 123, light-green; of 121 

 and 129, vivid green ; and of 126, 128, 130, dark green. The length of 

 the leaves varies, generally from 2 to 8 inches, but in 124, 125, 128, 130, 

 it ranges from 10 to 12 inches. P. insignis, Sabiniana, macrocarpa, and 

 ponderosa are of very rapid growth. P. Tceda, radiata, and tuberculata 

 stan,d the sea-breeze well in their native countries, and are expected to 

 prove acquisitions to parks near the sea-coast in the United Kingdom. 

 P. Sabiniana requires a rich loam ; Qerardiana thrives among rocks 

 and crags ; Tceda in very barren ground, but attains its greatest perfec- 

 tion in swampy soils. P. insignis and rigida afford effective shelter. 

 The timber of P. rigida is valuable, and that of P. ponder osa is expected 

 to prove so. The light silvery color of P. Sabiniana and macrocarpa 

 will be as marked in ornamental scenery, during the whole year, as the 

 summer garb of the Huntingdon willow ; and the light green of P. Teo- 

 cote, patula, and Gerardiana, as that of the summer greens of the decid- 

 uous trees. 



Pinus. — Group 10. Pinaster. 

 (Leaves in pairs, rarely in threes.) 



137. P. pungens, 100 ft. 



138. P. muricata, 40 ft. 



139. P. inops, 4Q-50 ft. 



140. P. mitis, 50-60 ft. 



141. P. variabilis, 30-40 ft. 



142. P. Pinaster, 50-60 ft. 



143. P. Escarena. 



144. P. Lemoniana. 



145. P. minor. 



146. P. variegata. 



147. P. Pumilio, 5-10 ft. 



148. P. uncinata, 30-50 ft. 



Mugho, Lindl. 



149. P. rotundata. 



150. P. humilis. 



151. P. obliqua. 



152. P. sylvestris, 40-80 ft. 



153. P. rubra, 60-70 ft. 



154. P. argentea. 



155. P. sylvestris monophylla. 



157. p. Altaica. 



158. P. globosa. 



159. P. tortuosa. 



*160. P. densirlora, 40 ft. - 



161. P. Massoniana, s h, 

 *162. P. Merkusii, 100 ft. 



163. P. Banksiana, 40 ft. 



164. P. resinosa, 80 ft. 



165. P. Laricio, 100-150 ft. 



166. P. Calabrica. 



167. P. Caramanica. 



1 6b. P. subviridis. 



169. P. pygmaea, 



170. P. Austriaca, 100-120 ft. 



171. P. Pyrenaica, 60-70 ft. 



172. P. Pallasiana, 60-80 ft. 



Taurica, Hort. 



173. P. Halapensis, h? 30-40 ft. 



174. P. maratima, h? 



175. P. Brutea, h? 



156. P. Haganoviensis. 



All the trees of this group have more or less pyramidal forms when 

 young ; many of them have, or approach to, the form of a rounded 



