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CEGL003113 Achnatherum speciosum Shrub Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Desert Needlegrass Shrub Grassland
Colloquial Name: Desert Needlegrass Shrub Grassland
Hierarchy Level: Association
Type Concept: This association occurs in the valleys and lower slopes of the Mojave Desert. It is a shrubland with desert needlegrass as the dominant in the herb layer that often intergrades into creosotebush scrub. Stand composition varies. Achnatherum speciosum is the sole dominant or important grass in the ground layer. Other plants in the herb layer may include Nassella lepida, Achnatherum hymenoides, Nassella cernua, Poa secunda, and Elymus elymoides. Grasses are <1 m and cover is open. The shrub layer often contains Hymenoclea salsola.
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 occurs in the valleys and lower slopes of the Mojave Desert.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688814
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G1Q
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 3 Desert & Semi-Desert Class | C03 | 3 |
| Subclass | 3.B Cool Semi-Desert Scrub & Grassland Subclass | S11 | 3.B |
| Formation | 3.B.1 Cool Semi-Desert Scrub & Grassland Formation | F033 | 3.B.1 |
| Division | 3.B.1.Ne Western North American Cool Semi-Desert Scrub & Grassland Division | D040 | 3.B.1.Ne |
| Macrogroup | 3.B.1.Ne.1 Yellow Rabbitbrush - Blackbrush / Indian Ricegrass Dry Shrubland & Grassland Macrogroup | M171 | 3.B.1.Ne.1 |
| Group | 3.B.1.Ne.1.c James'' Galleta - Indian Ricegrass - Needle-and-Thread Semi-Desert Grassland Group | G311 | 3.B.1.Ne.1.c |
| Alliance | A1290 Desert Needlegrass Grassland Alliance | A1290 | 3.B.1.Ne.1.c |
| Association | CEGL003113 Desert Needlegrass Shrub Grassland | CEGL003113 | 3.B.1.Ne.1.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Achnatherum speciosum (Sawyer et al. 2009) [41.090.01]
= Achnatherum speciosum Shrub Association (Evens et al. 2014)
= Achnatherum speciosum Shrub Association (Evens et al. 2014)
- 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.
- 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.
- Sawyer, J. O., and T. Keeler-Wolf. 1995. A manual of California vegetation. California Native Plant Society, Sacramento. 471 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.