Print Report

CEGL002960 Hyptis emoryi Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Desert-lavender Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association is currently only described from Joshua Tree National Park, California. Additional global information will be added as it becomes available. Stands form a sparse to open shrubland with 0-1% cover for the tree stratum, 8-21% cover for the shrub stratum, and <1-3% cover for the herb stratum. Total vegetative cover ranges from 8-21%. This association is dominated by Hyptis emoryi. Characteristic shrub species include Hymenoclea salsola, Bebbia juncea, Encelia farinosa, and Larrea tridentata. The characteristic herb species is Mirabilis laevis var. villosa. Ambrosia dumosa and Chamaesyce sp. often occur in the shrub and herb layers. Stands are common in narrow and steep, high-energy, rocky washes throughout the mountain ranges in the eastern portions of the park. They are found at low to mid elevations (400-900 m [1400-2800 feet]) on convex, linear, concave, and undulating slopes of drainages on rocky highlands, washes, and arroyos. Soils are typically sandy. Ground cover is comprised of 0-10% bedrock, 0-15% boulder, 0-20% stone, 19-47% cobble, 10-31% gravel, and 10-65% fines cover. Litter consists of 1-10% cover. This association experiences low levels of disturbance from competition from exotics.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: No Data Available

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This association is only described from Joshua Tree National Park, California, and Lake Mead National Recreation Area, Nevada. However, similar stands have been sampled in Anza-Borrego Desert State Park (Keeler-Wolf et al. 1998a) and in the southern portion of the eastern Mojave Desert (Thomas et al. 2004).

Nations: US

States/Provinces:  CA, NV




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Hyptis emoryi (Sawyer et al. 2009) [33.190.01]
= Hyptis emoryi Association (Evens et al. 2012)
= Hyptis emoryi Association (Evens et al. 2014)

Concept Author(s): Evens et al. (2012)

Author of Description: Evens et al. (2012)

Acknowledgements: No Data Available

Version Date: 08-20-18

  • Evens, J. M., D. Roach-McIntosh, and D. Stout. 2012. Vegetation descriptions for Joshua Tree National Park. Unpublished report submitted to USDI, National Park Service, Mojave Desert Inventory and Monitoring Network. California Native Plant Society, Sacramento, CA.
  • Evens, J. M., K. Sikes, D. Hastings, and J. Ratchford. 2014. Vegetation alliance descriptions for Lake Mead National Recreation Area, Death Valley National Park and Mojave National Preserve. Unpublished report submitted to USDI National Park Service, Mojave Desert Network Inventory and Monitoring Program. California Native Plant Society, Sacramento, CA.
  • Keeler-Wolf, T., C. Roye, and K. Lewis. 1998a. Vegetation mapping and classification of the Anza-Borrego Desert State Park, California. Unpublished report on file at California Natural Diversity Database, California Department Fish and Game, Sacramento.
  • La Doux, T., C. Lea, and E. Babich. 2013. A summary of the Joshua Tree National Park Vegetation Mapping Project: NPS Vegetation Inventory Program. Natural Resource Technical Report NPS/JOTR/NRTR--2013/723. National Park Service, Fort Collins, CO. 839 pp.
  • Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
  • Thomas, K. A., T. Keeler-Wolf, J. Franklin, and P. Stine. 2004. Mojave Desert Ecosystem Program: Central Mojave vegetation mapping database. U.S. Geological Survey, Western Regional Science Center. 251 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.