P. montezumae has stiff, woody cone scales and cones not much over 8cm. Pinus ayacahuite has more flexible cones scales and the cones are generally 20-25cm long. Pinus wallichiana 'Zebrina'. Leaves are very long to 8 in. On older trees needles are clustered at the tips and resemble clumps of ornamental grass.
Shoots often droop under the weight of the long needles.
Pinus bungeana 53. Pinus cembroides and its various botanical varieties 55. Pinus jeffreyi 59. Variations in the forestry trade have been extrensively improved with genes from many other species from Asia, Europe, North America, and Mexico. Pinus serotina is similar is perhaps best considered a subspecies of P. rigida.