Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Pinaceae

Scientific Name: Abies vejarii var. macrocarpa
Species Authority: Martínez
Parent Species:
Taxonomic Source(s): Farjon, A. 2010. A Handbook of the World's Conifers. Koninklijke Brill, Leiden.
Taxonomic Notes: This variety is only distinguished by the larger size of its cones. Further collections are necessary to fully evaluate its taxonomic status.

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2013
Date Assessed: 2012-05-30
Assessor(s): Farjon, A.
Reviewer(s): Thomas, P., Perez de la Rosa, J. & Rushforth, K.
As this variety is known from only two localities with a very small area of occupancy, and as wildfires represent a credible threat, an assessment of Vulnerable under the D2 criterion is appropriate.

Geographic Range [top]

Range Description: Endemic to Mexico, occurring in Coahuila (Mesa de las Tablas) and Nuevo León (Cerro Potosí). The extent of occurrence is less than 2,000 km2 and the area of occupancy of the two known subpopulations is less than 10 km2.
Countries occurrence:
Mexico (Coahuila, Nuevo León)
Estimated area of occupancy (AOO) - km2: 10
Number of Locations: 2
Lower elevation limit (metres): 2800
Upper elevation limit (metres): 3300
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Only known from two localities and from a few herbarium collections, this variety is either very rare or not recognized (some collections are sterile and cannot be identified to this variety). Population trends are unknown.
Current Population Trend: Unknown
Additional data:
Continuing decline of mature individuals: Unknown
Population severely fragmented: Yes

Habitat and Ecology [top]

Habitat and Ecology: Found on high mountains (2,800-3,300 m asl) , presumably occurring with (both) other varieties recognized in this species in oak-pine forest.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Unknown
Generation Length (years): 40

Use and Trade [top]

Use and Trade: This taxon is not a commercial timber tree. It is very rare in cultivation.

Threats [top]

Major Threat(s): The most likely threat would be devastating wildfires, that could destroy an entire subpopulation.

Conservation Actions [top]

Conservation Actions: This variety is known from one protected area.

Classifications [top]

1. Forest -> 1.4. Forest - Temperate
suitability: Suitable  major importance:Yes
2. Land/water management -> 2.3. Habitat & natural process restoration

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education
  Included in international legislation:No
  Subject to any international management/trade controls:No
7. Natural system modifications -> 7.1. Fire & fire suppression -> 7.1.1. Increase in fire frequency/intensity
♦ timing: Ongoing ♦ scope: Minority (<50%) ♦ severity: Rapid Declines ⇒ Impact score: Medium Impact: 6 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
  • 2. Species Stresses -> 2.1. Species mortality

1. Research -> 1.2. Population size, distribution & trends
3. Monitoring -> 3.1. Population trends

Bibliography [top]

Farjon, A. 2010. Conifer Database (June 2008) In Species 2000 & ITIS Catalogue of Life: 2010 Annual Checklist (Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., eds). Reading, UK. Available at:

Farjon, A. 2010. A Handbook of the World's Conifers. Koninklijke Brill, Leiden.

IUCN. 2013. IUCN Red List of Threatened Species (ver. 2013.1). Available at: (Accessed: 12 June 2013).

Citation: Farjon, A. 2013. Abies vejarii var. macrocarpa. The IUCN Red List of Threatened Species 2013: e.T20460959A20461991. . Downloaded on 07 October 2015.
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