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Range of Pinus praetermissa (Farjon & Styles 1997). Basemap from Expedia Maps.

 

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Conservation status

Pinus praetermissa

Styles et McVaugh 1990

Common names

Taxonomic Notes

Syn: Pinus oocarpa var. microphylla Shaw 1909 (Farjon & Styles 1997).

J. A. Pérez de la Rosa has recently (2009) described a new species, Pinus georginae, that closely resembles P. praetermissa. It is endemic to the southern Rio Ameca basin in Jalisco, Mexico. Thus far I have no further information.

Description

Trees 12-15(-20) m tall and 30 cm dbh. Branchlets flexible, slender, reddish brown, 2-4.5 mm thick. Leaves in fascicles of 5, 8-16 cm long, 0.5-0.7 mm wide, light green, ascending on the branchlets, minutely serrulate; stomata on all faces; fascicle sheaths persistent, 11-14 mm long, light reddish brown greying with age. Immature cones "almost exactly simulating those of Pinus oocarpa;" broadly ovoid and short-acute, symmetrical, light brown, smooth or sometimes with protuberant apophyses, 5.5-7 cm long on peduncles 3-3.5 cm long and 3-4 mm thick; cones opening widely, so about as long as wide. Cone scales not crowded toward the base (as in P. oocarpa) but more uniformly spreading-ascending or recurved: up to ca 25 of the small basal scales persistent on the peduncle when the cone falls. leaving a scar up to 3 cm across at the base of the cone: seed-wing thickened (1-1.5 mm thick) above the base.

Distribution and Ecology

Mexico.

Zone 9 (cold hardiness limit between -6.6°C and -1.1°C) (Bannister and Neuner 2001).

Big tree

Oldest

Dendrochronology

Ethnobotany

Observations

Remarks

Citations

Pérez de la Rosa, J. A. 2009. Pinus georginae (Pinaceae), a new species from western Jalisco, Mexico. Brittonia 61(1):56-61.

Styles, B. T. and R. McVaugh. 1990. A Mexican pine promoted to specific status: Pinus praetermissa. Contr. Univ. Mich. Herb. 17: 307-312. Available: biodiversitylibrary.org/page/12874999, accessed 2011.05.17.

See also

Last Modified 2012-11-23