PINETUM DANICUM. 



351 



extreme western limits associated and often confounded with the 

 closely allied P. contorta and P. Murrayana of the Pacific region. 



Wood light, soft, not strong, rather close-grained, compact ; bands 

 of small summer cells not broad, very resinous, conspicuous, resin 

 passages few, not large ; medullary rays numerous, obscure ; colour 

 clear light brown or (rarely) orange, the thick sapwood almost white ; 

 specific gravity, 0 "4761 ; ash, 0*23 ; largely used for fuel, railway ties, 

 &c. (C. S. Sargent). 



P. Bcmksiana, Lamb. , published in 1803 in Lambert's first edition 

 of Pines a year prior to Poiret's name of P. rupestris — which name, 

 erroneously preferred by Parlatore, must give way to the former — is 

 probably the only Pine with erect, or at least patulous, cones. The small 

 prickles of the very young cones soon disappear, so that the mature 

 ones are unarmed. They keep a long time closed — often many years. 



Dr. Mayr believes that the wood of P. Banhsiana is not inferior 

 to that of P. silvestris in quality. He therefore believes that the 

 plant, although it never attains a great size, is really worthy of being 

 chosen for forest culture on very poor ground, and he recommends it 

 for that purpose. 



As this Pine grows more to the north than any other species, 

 there can be no doubt at all as to its hardiness. It is perhaps the 

 species which gives the greatest quantity of cones. I think it would 

 be interesting to graft it on a somewhat more vigorous species. 



P. Bartksiana is rare in Danish gardens ; one specimen, however, 

 planted in 1870, measures 21 feet in height and 15 inches in girth. 



It has proved to be hardy in Stockholm. 



P. Beardsleyi, Murr. (P. ponderosa). I find it still necessary to 

 keep this species as distinct, although probably it may turn out to 

 be P. ponderosa. 



Hardy. 



P. Boursierii, Carr. Pev. Hort. 1854, 225 (cum ic), 333, and 

 Tr. Gen. Conif. 398 (not Gord., nor Henk. and Hochst.). P. 

 Boyleana (1), Lindl. Journ. Hort. Soc. ix. (cam ic.) ; Gard. Chron. 

 Jan. 28, 1854. 



Habitat. — California, where it was found by the French Vice- 

 Consul Boursier de la Piviere. 



The first seeds were introduced in 1853. 

 Seems to be hardy. 



P. Brownii. This plant may later on receive another specific 

 name. 

 Hardy, 



P. Bungeana, Zucc. Mss. in Endl. Conif. 166. P. exoorticata, 

 hort. 



Habitat. — North-eastern China ; also much cultivated, especially 

 on the island of Chusan, &c. 



