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ARBORETUM AND FRUTICETUM.

PART III,

pine from the Duke of Northumberland, and that the trees producedwere exactly similar to the Scotch pine. Pallas assures us that thepine of Livonia and Lithuania differs not from the P. sylvestris :masts, he says, are not made of any peculiar species, as foreigners,and more especially the French, think; but they are all of the P. syl-vestris . Those trees are chosen that have a yellow bark, and a tallstraight trunk, free from branches. ( Dcsf. Hist, des Arb., ii. p. 619.)In 1814, this variety was again brought into notice by the late Pro-fessor Thouin, who published a tract on the subject, recommendingits culture, on account of the superiority of its wood to that of thecommon French variety of P. sylvestris . M. Puvis {He I’Agnc.du Gatinais, &c.) describes the pin de Riga as growing beside thepin de Haguenau , on M. Vilmorin’s estate at Barres, and rivallingthat variety in dimensions. The following are Mr. Lawson’s remarkson this variety: — “ From the superior quality of the timber ofP. sylvestris imported from Riga under the name of red pine, todistinguish it from that of H'bies communis, or white deal, it has beenconsidered advisable to procure seeds from the natural forests in theneighbourhood of that place, and to the plants produced from suchseeds the above name is applied. They may at least be consideredas possessed of equal merits with such as are derived from the bestnative forests in the Highlands of Scotland .” {Agric. Manual, p. 331.)Seeds and plants of this variety may be obtained of Mr. Lawsonand M. Vilmorin; and there are specimen plants of it in the Hor-ticultural Society’s Garden, in the arboretum at Kew, and atMessrs. Loddiges.

Other Timber Tree Varieties. The names of several might be given frombooks; but, as we could neither accompany them by descriptions orsynonymes, nor refer to any place where living plants may be seen, weconsider that it would be of very little use. P. s. altissima, in the Hor-ticultural Society’s Garden, is a strong-growing variety, resemblingthe pin de Haguenau , and is probably identical with it, though raisedfrom Caucasian seeds; but P. altissima is a name more generally appliedto P. Laricio than to P. sylvestris .

b. Varieties curious or ornamental.

1 P. s. 6 genevensis. The Geneva wild Pine . —There is a plant of this varietyin the Horticultural Society’s Garden, a portrait of which is givenin our last Volume, by which it appears to be a low crooked tree,with numerous twisted branches, extending considerably at the base.There is a good specimen at Dropmore. We have already suggestedthat this may possibly be the commonest and most worthless varietyof P. sylvestris which attains a timber-like size in France . (Seep. 2155.)

1 P. s. 7 monophylla Hodgins. — The leaves are long and glaucous, andthose of each sheath are generally attached to each other through-out their length; though when the points are taken between thefinger and thumb, and the apparently single leaf twisted, it gene-rally separates into two, and sometimes into three leaves. Wehave only seen one plant in the Horticultural Society’s Garden, towhich it was sent by Mr. Hodgins, nurseryman, Dunganstown, nearWicklow, about 1830.

I P. s. 8 scaribsa; P. scariosa Lodd. Cat.,e d. 1836.— A French varietViintroduced about 1820; but the plant at Messrs. Loddiges’s is small,and scarcely appears different from the species.

1 P. s. 9 intermedia. —This is a Russian variety, of which there is a plantin the Horticultural Society’s Garden, having slender young shootsdepressed towards the stem, and leaves shorter and less glaucousthan those of the species.