PINUS CEMBROIDES. 321 



old and picturesque trees are to be seen in the parks of family seats 

 throughout the country. The chief if not the sole use of the Cembra 

 Pine in Great Britain is for ornamental planting, for which it is a 

 distinct and beautiful tree whether standing singly or in groups. Its 

 growth is slow, rarely exceeding a foot in one season under the most 

 favourable circumstances ; it requires but little room, and is always 

 well furnished with foliage which emits a pleasant fragrance during the 

 growing season. 



Pinus cembroides. 



A bushy tree with a short stem rarely more than a foot in 

 diameter and a broad round-topped head, usually 15 20 feet high, but in 

 the sheltered canons on the mountains of Arizona occasionally 50 60 

 feet high. Branchlets slender, orange-brown, and covered with deciduous 

 hairs, gradually growing darker till the end of four or five years, 

 when they are almost black and roughened with the scars of the fallen 

 leaves. Leaves geminate or ternate, persistent three four years, 

 incurved with callous tips, 1 2 inches long, dark green ; basal sheath 

 scarious, about 0'25 inch long. Staminate flowers about 0*25 inch 

 long in short compact clusters, with yellow crested anthers and surrounded 

 by an involucre of four bracts. Cones sub-globose, sessile or very 

 shortly stalked, 2 2 -5 inches in diameter ; fertile scales rounded at 

 the apex, much thickened and quadrangular on the back with a 

 prominent horizontal keel. Seeds 0*5 0*75 inch long with a narrow 

 light brown wing. Sargent, Silva of North America, XL 47, t. 550. 



Pinus cembroides, Zuccarini, Abhand. Acad. Munich, I. 392 (1832). Endlicher' 

 Synops. Conif. 182. Gordon in Journ. Hort. Soc. Loud. I. 236, with fig. Carriere, 

 Traite Conif. ed. II. 460. Parlatore, D. C. Prodr. XVI. 397. Masters in Journ. 

 R. Hort. Soc. XIV. 227. 



P. Llaveana, Schlechtendal in Linnaea, XII. 488 (1838). 



P. osteosperma, Engelmann, Bot. App. 89, to Wislizenus' Memoir. 



Pinus cembroides is widely distributed over the drier mountain 

 systems of south-western North America between the 18th and 35th 

 parallels of north latitude, covering the higher slopes often unmixed 

 up to 6,500 feet elevation, and towards its southern limit in Mexico 

 up to 10,000 feet. From Arizona and Lower California it spreads 

 southwards over the mountains of northern Mexico as far as 

 Orizaba. 



It is the longest known in this country of a group of Pines including 

 four species characterised by their low stature, short leaves, and small 

 globose cones of which the central scales only are fertile and bear 

 large edible seeds which are largely consumed throughout the dry region 

 which these Pines inhabit, and where they are known under the, 

 common name of Pinons or Nut Pines. The four species are Pinus 

 cembroides, P. edulis, P. monophylla and P. Parryana ; the three 

 first-named were introduced many years ago, but owing doubtless to 

 climatic causes they refuse to grow for any length of time and have 

 now nearly or quite disappeared from British gardens. P. Parryana is 

 a later introduction, and although native of a warmer climate than that 

 of Great Britain, grows in Devon and Cornwall much better than the 

 other three, and on account of its distinctness is deserving of further 



