Print Report

A3859 Arctostaphylos nummularia - Arctostaphylos stanfordiana - Chrysolepis chrysophylla var. minor North Coast Chaparral Alliance

Type Concept Sentence: This alliance consists of maritime chaparral stands where one or more of the following shrubs is dominant: Arctostaphylos bakeri, Arctostaphylos canescens, Arctostaphylos hookeri ssp. montana, Arctostaphylos hooveri, Arctostaphylos nummularia, Arctostaphylos stanfordiana, and/or Chrysolepis chrysophylla var. minor. These are found in northern California coast.


Common (Translated Scientific) Name: Glossyleaf Manzanita - Stanford''s Manzanita - Giant Chinquapin North Coast Chaparral Alliance

Colloquial Name: North Coast Manzanita - Giant Chinquapin Chaparral

Hierarchy Level:  Alliance

Type Concept: This alliance consists of maritime chaparral stands, with one or more of Arctostaphylos bakeri, Arctostaphylos canescens, Arctostaphylos hookeri ssp. montana, Arctostaphylos hooveri, Arctostaphylos nummularia, Arctostaphylos stanfordiana, and/or Chrysolepis chrysophylla var. minor dominating. Associated species may include Adenostoma fasciculatum, Arctostaphylos glandulosa, Arctostaphylos manzanita, Baccharis pilularis, Ceanothus foliosus, Ceanothus confusus, Diplacus aurantiacus, Eriodictyon californicum, Heteromeles arbutifolia, Pickeringia montana, Toxicodendron diversilobum, Vaccinium ovatum, and Quercus wislizeni var. frutescens and/or Quercus berberidifolia. Emergent Pinus attenuata, Pseudotsuga menziesii, Quercus chrysolepis, Quercus wislizeni, or Umbellularia californica trees may be present with sparse cover. Stand occur in northern coastal California.

Diagnostic Characteristics: Dominated by one or more species of California endemic Arctostaphylos or Chrysolepis chrysophylla var. minor, found along the northern California coast. Generally associated species are more northern coastal scrub than southern (e.g., Toxicodendron diversilobum, Vaccinium ovatum, and some of the Ceanothus spp.).

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: The Jepson Manual uses the name Arctostaphylos hookeri ssp. montana, but recent work (Markos et al. 1998) suggests that only the southern subspecies should be maintained in Arctostaphylos hookeri (Parker et al. in review). Coastal stands of Arctostaphylos canescens are included here. The taxonomic relationships of Arctostaphylos hookeri ssp hookeri and Arctostaphylos hookeri ssp. montana need clarification before determining best placement of the associations dominated by those (here in this alliance (A3859), or with ~Arctostaphylos tomentosa ssp. crustacea - Arctostaphylos tomentosa Central Coast & Island Chaparral Alliance (A3858)$$. Stands of Arctostaphylos canescens that occur in the coastal, maritime zone of California and southern Oregon are included in this alliance. Some stands of Arctostaphylos canescens are not coastal maritime, and would be included in other groups and alliances, once those associations have been defined. Todd Keeler-Wolf (pers. comm. 2014) suggests separating Arctostaphylos nummularia.

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

Physiognomy and Structure: No Data Available

Floristics: This alliance consists of maritime chaparral stands, with one or more of Arctostaphylos bakeri, Arctostaphylos canescens, Arctostaphylos hookeri ssp. montana (= Arctostaphylos montana), Arctostaphylos hooveri, Arctostaphylos nummularia (= Arctostaphylos sensitiva), Arctostaphylos stanfordiana, and/or Chrysolepis chrysophylla var. minor dominating. Associated species may include Adenostoma fasciculatum, Arctostaphylos glandulosa, Arctostaphylos manzanita, Baccharis pilularis, Ceanothus foliosus, Ceanothus confusus, Diplacus aurantiacus (= Mimulus aurantiacus), Eriodictyon californicum, Heteromeles arbutifolia, Pickeringia montana, Toxicodendron diversilobum, Vaccinium ovatum, and Quercus wislizeni var. frutescens and/or Quercus berberidifolia. Emergent Pinus attenuata, Pseudotsuga menziesii, Quercus chrysolepis, Quercus wislizeni, or Umbellularia californica trees may be present with sparse cover.

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This alliance is found in northern coastal California, generally north of San Francisco Bay, possibly extending into extreme southern coastal Oregon.

Nations: US

States/Provinces:  CA, OR?




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: includes A.2605

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: > Arctostaphylos (nummularia, sensitiva) (Glossy leaf manzanita chaparral) Alliance (Sawyer et al. 2009) [37.306.00]
> Arctostaphylos bakeri (Stands of Baker manzanita) Special Stands (Sawyer et al. 2009) [37.317.00]
> Arctostaphylos canescens (Hoary manzanita chaparral) Provisional Alliance (Sawyer et al. 2009) [37.311.00]
> Arctostaphylos hooveri (Hoover’s manzanita chaparral) Alliance (Sawyer et al. 2009) [37.312.00]
> Arctostaphylos montana (Mount Tamalpais manzanita chaparral) Alliance (Sawyer et al. 2009) [37.307.00]
> Arctostaphylos stanfordiana (Stanford manzanita chaparral) Provisional Alliance (Sawyer et al. 2009) [37.319.00]

Concept Author(s): M.S. Reid, in Faber-Langendoen et al. (2013)

Author of Description: M.S. Reid

Acknowledgements: No Data Available

Version Date: 12-18-14

  • Faber-Langendoen, D., J. Drake, M. Hall, G. Kittel, S. Menard, C. Nordman, M. Pyne, M. Reid, M. Russo, K. Schulz, L. Sneddon, K. Snow, and J. Teague. 2013-2019b. Screening alliances for induction into the U.S. National Vegetation Classification: Part 1 - Alliance concept review. NatureServe, Arlington, VA.
  • Markos, S., L. C. Hileman, M. C. Vasey, and V. T. Parker. 1998. Phylogeny of the Arctostaphylos hookeri complex (Ericaceae) based on nrDNA data. Madroño 45:187-199.
  • 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.