Pinus arizonica var. cooperi
Pino de Cooper [Spanish], Cooper's pine.
Syn: Pinus cooperi Blanco 1950; P. lutea Blanco ex Martínez 1945 non Walter 1788, nec Gordon & Glendinning 1858; P. lutea var. ornelasi Martínez 1945; Pinus cooperi var. ornelasii (Martínez) Blanco 1950 (Farjon and Styles 1997).
Until I get a proper description posted here, these are my field notes from the mountains of Durango: "I saw P. arizonica var. cooperi earlier. I looked quite a bit and only found one tree. The needles are about the same length as on P. durangensis and the cones are about the same size as on P. durangensis but they are attached to the branch like on P. pseudostrobus and the bark resembles P. ponderosa, though not so pretty. Anyway you look for those things as you're flying down the road trying to pick it out from all the P. durangensis which otherwise resembles it closely."
Also see the map at left, which identifies some occurrences not shown on the map above; and see Thompson et al. (1999). Hardy to Zone 7 (cold hardiness limit between -17.7°C and -12.2°C) (Bannister and Neuner 2001).
The only place I have seen it is at the location shown at left, northeast of El Salto, Durango, at 23.855193°N, 105.309440°W.
This variety is a principal host for the dwarf mistletoes Arceuthobium globosum subsp. globosum, Arceuthobium rubrum, A. vaginatum subsp. vaginatum, and A. verticilliflorum (Hawksworth and Wiens 1996).
Last Modified 2012-11-27