Taxon Report
Mammillaria grahamii Engelm. var. grahamiiGraham fishhook cactus |
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Taxon Summary
Mammillaria grahamii var. grahamii, commonly known as Graham fishhook cactus, is a perennial stem in the Cactaceae that is found in California and elsewhere. It occurs within Sonoran desert scrub (gravelly, and rocky), growing at elevations from 300 to 900 meters. Mammillaria grahamii var. grahamii is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Mammillaria grahamii Engelm. var. grahamii |
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Common Name: |
Graham fishhook cactus |
| Family: | Cactaceae |
| Element Code: | PDCAC0A021 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial stem |
| Blooming Period: Apr-Sep | Apr-Sep |
| Elevation: | 300-900 (985-2955) |
| General Habitats: | Sonoran desert scrub |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G4T4 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; SB_USDA |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 10 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 1 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 9 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| Gene Wash (3411432), Savahia Peak (3411435), Whipple Mts. SW (3411434), Whipple Wash (3411433) | |
Threat List Data from the CNDDB
| Threat List Total: | 1 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 10 % | |
| Road/trail construction/maint. | 1 | 10% |
Selected References
| CRPR List Addition on 2010-04-06 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 7 December 2025].