170 PINUS 



seed. With few exceptions it is desirable to get them planted in their 

 permanent places as young as possible. 



A few pines well known by name are not given detailed description 

 in the following pages because their garden value is nil ; the three 

 following species may be briefly mentioned : 



P. PALUSTRIS, Miller (P. australis, Michaux\ is the true PITCH-PINE of 

 the south-eastern United States, and one of the most valuable timber trees 

 of the world. Its leaves are in threes, and measure from 8 to 18 ins. long, 

 standing out stiffly all round the branches like the bristles of a sweep's brush. 

 A remarkable pine, up to 120 ft. high in nature, but too tender to succeed 

 well in our climate. 



P. TAEDA, Linnczus. LOBLOLLY PINE. This is from the same region as 

 palustris, and can only be grown in the mildest parts of our islands. It is a 

 three-leaved pine, the leaves 5 to 9 ins. long, and is chiefly distinguished 

 amongst that group by the non-resinous winter-buds clothed with fringed 

 scales recurved at the top. 



P. TORREYANA, Parry, is found only in two places in South California. 

 It is a distinct species, with leaves in fives and up to I ft. long, but too tender 

 for our average climate. It has several times been killed at Kew. One of 

 the natural sites of the tree is now under public protection. 



As indicating broadly the affinities and leading distinctions of the species 

 here dealt with, the following rough classification is given. Those marked 



* are most to be recommended for gardens : 



I. LEAVES SOLITARY. 

 Monophy licit 



II. LEAVES IN PAIRS. 



(a) Buds cylindrical, resinous. 



Banksiana. Leaves I to if ins. long ; cones bent at the end. 

 *Muricata. Leaves 3 to 5 ins. long. 



Virginiana. Leaves \\ to 3 ins. long ; young shoots purple-violet. 



Pungens. Leaves stiff, sharply pointed ; young shoots brown. 

 *Sylvestris. Leaves glaucous ; bark of trunk scaling, reddish. 



Densiflora. Leaves green ; bark of trunk scaling, reddish. 



* Montana. Leaf-sheath up to f in. long ; bud -scales appressed. 

 Contorta. Leaf-sheath about \ in. long ; bud-scales appressed. 

 Murrayana. Like contorta, but with scaling bark on trunk. 



(b) Buds broadly ovoid \ resinous. 



* Laricio. Leaf-sheath \ in. long : leaf 4 to 7 ins. long. 



* Thunbergii. Leaf-sheath \ in. long ; leaf 2 to \\ ins. long ; bud resinous at base 



only. 



Resinosa. Leaf-sheath in. long. 

 Leucodermis. Leaves stiff; young shoots shining brown, turning grey the second 



year. 



(c) Buds non-resinous. 



* Pinaster. Bud-scales with fringed margins and recurved points. 

 * Pinea. Bud-scales as in Pinaster ; leaves much shorter. 



Brttti ' \ Young shoots pale, and leaves more slender than in either of above. 

 Echinata. Young shoots blue- white ; leaves often in threes. 

 * Edulis. Young shoots blue-white ; leaves often in threes ; leaf-sheath rosette-like. 



