Zamia neurophyllidia 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Cycadopsida Cycadales Zamiaceae

Scientific Name: Zamia neurophyllidia D.W.Stev.

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2c; C1 ver 3.1
Year Published: 2010
Date Assessed: 2009-10-31
Assessor(s): Taylor, A.
Reviewer(s): Donaldson, J.S. & Bösenberg, J.D.
Qualifies as Vulnerable based on decline of >30% over the past three generations due to habitat destruction as well as under criterion C1 based on a population size of 5,000 mature individuals and decline of >10% over three generations. If a hydroelectric project goes ahead, the decline may be >30%.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Little is known of the true extent of the geographic distribution of this species, but the populations that have been surveyed to date occur on steep hills of primary tropical deciduous forest along the Río Changuinola and its tributaries. This falls in the Bocas del Toro region of Panama.
Countries occurrence:
Additional data:
Lower elevation limit (metres):100
Upper elevation limit (metres):400
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Little is known about population numbers
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:4000-5000
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species grows as an understorey plant on steep hills in primary tropical deciduous forest along rivers. The understorey in the areas of the forest with the largest trees (in what could be referred to as protected primary forest) is dominated by plants with trunks well in excess of one metre and often measuring 1.5–2 m tall.
Generation Length (years):30

Threats [top]

Major Threat(s): A hydro-electric dam project that is being planned for the region may have significant negative impacts on several subpopulations.

Conservation Actions [top]

Conservation Actions: This species is listed on Appendix II of the CITES Appendices.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
4. Education & awareness -> 4.3. Awareness & communications

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:Yes
  Subject to any international management/trade controls:Yes
2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.4. Scale Unknown/Unrecorded
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

7. Natural system modifications -> 7.2. Dams & water management/use -> 7.2.11. Dams (size unknown)
♦ timing:Future    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

♦  Unknown
 Local : ✓   National : ✓  International : ✓ 

Bibliography [top]

Hill, K.D. and Stevenson, D.W. 1998-2006. The Cycad Pages. Available at:

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: (Accessed: 2 September 2010).

Jones, D.L. 2002. Cycads of the World (2nd edition). Smithsonian Institute Press, Washington, DC.

Taylor, A.S., Haynes, J.L. and Holzman, G. 2008. Taxonomical, nomenclatural and biogeographical revelations in the Zamia skinneri complex of Central America (Cycadales: Zamiaceae). Botanical Journal of the Linnean Society 158: 399-429.

Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.

Citation: Taylor, A. 2010. Zamia neurophyllidia. The IUCN Red List of Threatened Species 2010: e.T42170A10673004. . Downloaded on 25 September 2018.
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