Difference between revisions of "Pinus ponderosa var. arizonica"
Pines Mexico 24, plates 4, 17, fig. 4. 1909.
Common names: Arizona pine
Basionym: Pinus arizonica in Rothrock, Wheeler, U.S. Geogr. Surv. West 100th Merid. Rep. 6: 260. 1878
Treatment appears in FNA Volume 2.
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|name=Pinus arizonica | |name=Pinus arizonica | ||
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| + | |publication_title=in Rothrock, Wheeler, U.S. Geogr. Surv. West | ||
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Trees </b>to 30m; trunk to 1.2m diam. <b>Twigs</b> mostly purple or red-brown, usually glaucous. <b>Buds</b> slightly resinous. <b>Leaves</b> mainly 4–5 per fascicle, 7–17cm × 1–1.2(–1.5)mm. <b>Pollen</b> cones mostly yellow. <b>Seed</b> cones often asymmetric, 5–8cm; apophyses at abaxial base often strongly raised, frequently mammillate; umbo low, broadly pryamidal, and merely acute or with very short apiculus. <b>Seed</b> body 3–4mm; wing to 15mm. <b>2n</b> =24.</span><!-- |
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|elevation=2100–2500m | |elevation=2100–2500m | ||
|distribution=Ariz.;N.Mex.;Mexico. | |distribution=Ariz.;N.Mex.;Mexico. | ||
| − | |discussion=<p>The least common, least accessible ponderosa pine in the flora is Pinus ponderosa var. arizonica. It has leaves ranging widely in number per fascicle and in length, perhaps an expression of intergradation with P. ponderosa var. scopulorum, with which it is sympatric over broad areas.</p><!-- | + | |discussion=<p>The least common, least accessible ponderosa pine in the flora is <i>Pinus ponderosa </i>var.<i> arizonica</i>. It has leaves ranging widely in number per fascicle and in length, perhaps an expression of intergradation with <i>P. ponderosa </i>var.<i> scopulorum</i>, with which it is sympatric over broad areas.</p><!-- |
| − | --><p>Texas (Chisos Mountains) pines that are referred by some workers to P. ponderosa var. arizonica, belong to P. ponderosa var. scopulorum.</p> | + | --><p>Texas (Chisos Mountains) pines that are referred by some workers to <i>P. ponderosa </i>var.<i> arizonica</i>, belong to <i>P. ponderosa </i>var.<i> scopulorum</i>.</p> |
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name=Pinus ponderosa var. arizonica | name=Pinus ponderosa var. arizonica | ||
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|genus=Pinus | |genus=Pinus | ||
|species=Pinus ponderosa | |species=Pinus ponderosa | ||
|variety=Pinus ponderosa var. arizonica | |variety=Pinus ponderosa var. arizonica | ||
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Latest revision as of 21:22, 5 November 2020
Trees to 30m; trunk to 1.2m diam. Twigs mostly purple or red-brown, usually glaucous. Buds slightly resinous. Leaves mainly 4–5 per fascicle, 7–17cm × 1–1.2(–1.5)mm. Pollen cones mostly yellow. Seed cones often asymmetric, 5–8cm; apophyses at abaxial base often strongly raised, frequently mammillate; umbo low, broadly pryamidal, and merely acute or with very short apiculus. Seed body 3–4mm; wing to 15mm. 2n =24.
Habitat: Slopes, canyons and rims, and tablelands
Elevation: 2100–2500m
Distribution
Ariz., N.Mex., Mexico.
Discussion
The least common, least accessible ponderosa pine in the flora is Pinus ponderosa var. arizonica. It has leaves ranging widely in number per fascicle and in length, perhaps an expression of intergradation with P. ponderosa var. scopulorum, with which it is sympatric over broad areas.
Texas (Chisos Mountains) pines that are referred by some workers to P. ponderosa var. arizonica, belong to P. ponderosa var. scopulorum.
Selected References
None.
Lower Taxa
None.