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Wildlife, Animals, and Plants |
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INTRODUCTORY
FEIS ABBREVIATION:PINPONA SYNONYMS:Pinus arizonica Engelm. [76,106] NRCS PLANT CODE [129]:PINAR5 COMMON NAMES:Arizona pine TAXONOMY:Pinus ponderosa var. arizonica (Engelm.) Shaw (Pinaceae) is the most widely accepted scientific name for Arizona pine [48,77,92]. It is 1 of 3 varieties of ponderosa pine (P. ponderosa Laws.): the other 2 are Pacific ponderosa pine (P. p. var. ponderosa) and interior ponderosa pine (P. p. var. scopulorum) [48,76]. The taxonomy of the ponderosa pine complex is not completely resolved. Although distinct, ponderosa pine infrataxa show differences on broad latitudinal clines. Dodge [43] described the species as "a continuation of a large group of populations from the Central American Highlands to British Columbia." There are morphological and distributional overlaps among the varieties, and disagreement among authorities regarding the geographical boundaries of ponderosa pine infrataxa including Arizona pine [35,48,83,106]. Ponderosa pine populations that extend northward into western Texas from Coahuila are classified either as P. p. var. scopulorum [48] or P. arizonica var. stormiae Mart. [74,76,106]. In this summary, "ponderosa pine" refers to the species as a whole. "Southwestern ponderosa pine" refers to both Arizona pine and interior ponderosa pine of the Southwest. Pacific ponderosa pine and interior ponderosa pine are discussed in separate Fire Effects Information System summaries. Information on ponderosa pine in Texas is included in the interior ponderosa pine summary. Intraspecies hybridization and introgression occur between Arizona and interior ponderosa pines. Arizona and interior ponderosa pines also hybridize and introgress with Apache pine (P. engelmannii); 3-taxa hybrids (interior ponderosa × Arizona × Apache pine) occur occasionally [48,105]. LIFE FORM:Tree FEDERAL LEGAL STATUS:No special status OTHER STATUS:No entry AUTHORSHIP AND CITATION:Howard, Janet L. (2002, February). Pinus ponderosa var. arizonica. In: Remainder of citation
Related categories for SPECIES: Pinus ponderosa var. arizonica | Arizona Pine |
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