Taxon Report
Arctostaphylos parryana Lemmon ssp. tumescens Keeley, Boykin, & Massihiinterior manzanita |
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Taxon Summary
Arctostaphylos parryana ssp. tumescens, commonly known as interior manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Chaparral (montane), and Cismontane woodland, growing at elevations from 2100 to 2310 meters. Arctostaphylos parryana ssp. tumescens is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.Classification
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Scientific Name: |
Arctostaphylos parryana Lemmon ssp. tumescens Keeley, Boykin, & Massihi |
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Common Name: |
interior manzanita |
| Family: | Ericaceae |
| Element Code: | PDERI042A1 |
| USDA Plants Symbol: | ARPAT |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial evergreen shrub |
| Blooming Period: Feb-Apr | Feb-Apr |
| Elevation: | 2100-2310 (6890-7580) |
| General Habitats: | Chaparral, Cismontane woodland |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 4.3 |
| Global Rank: | G4T3T4 |
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State Rank: |
S3S4 |
| State List: | None |
| Fed List: | None |
| Other Status: | USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 0 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX), Riverside (RIV), San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| Acton (3411842), Anza (3311656), Chilao Flat (3411831), Idyllwild (3311666), Juniper Hills (3411748), Moonridge (3411627), Onyx Peak (3411626), Pacifico Mountain (3411841), Waterman Mtn. (3411738) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | 0 % | |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 24 December 2025].