36 Illustrations of Conifers. 



PINUS GREGGII (Engelmann). 



Pinus patula var. macrocarpa {Masters). 



D. C. Prod. Vol. XVI. pt. 2, p. 896 (1868). 

 Shaw, Pines of Mexico, p. 28 (1909) with figs. 

 Gardeners' Chron. Vol. IX. p. 485 (1891) with fig. 



A tree 30 to 45 feet high, with smooth grey bark. Young shoots 

 glabrous, glaucous. Leaves short, erect, bright green, in clusters 

 of threes, 2| to 4 inches long, with median resin-canals. 



Young cones sub-terminal, pedunculate, single or aggregate, 

 their scales armed with a small and usually deciduous prickle. 

 Mature cones conical, 3^ to 5 inches long, reflexed, oblique, per- 

 sistent ; apophysis swollen, unevenly developed, lustrous, ochre yel- 

 low. The cones just before ripening change from green to shining 

 reddish-brown, not unlike the colour of a dry cone of P. hale- 

 peiisis. 



Pinus Gregg'd occurs wild on the north-eastern Sierras of Mexico 

 near Saltillo, Coahuila, at an altitude of 7,500 feet. It has been 

 much confused with P. patula (figured Vol. I. p. 41) but differs 

 from that species in its short erect leaves and smooth grey bark. 



At Leonardslee, Sussex, a young tree which was obtained from 

 Pallanza is now about 9 feet high, and has stood 20 degrees of frost 

 without injury. 



The illustration represents a specimen obtained from the Botanical 

 Gardens, Naples. 



