Taxon Report
Mertensia longiflora Greenelong bluebells |
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Taxon Summary
Mertensia longiflora, commonly known as long bluebells, is a perennial herb in the Boraginaceae that is found in California and elsewhere. It occurs within Great Basin scrub, and Lower montane coniferous forest, growing at elevations from 1525 to 2200 meters. Mertensia longiflora 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: |
Mertensia longiflora Greene |
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Common Name: |
long bluebells |
| Family: | Boraginaceae |
| Element Code: | PDBOR0N0D0 |
| USDA Plants Symbol: | MELO4 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 1525-2200 (5005-7220) |
| General Habitats: | Great Basin scrub, Lower montane coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G4? |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 11 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 9 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Lassen (LAS), Modoc (MOD) | |
| Quads: Name (Quad Code) | |
| Barrel Springs (4111988), Cedarville (4112052), Fort Bidwell (4112072), Halls Canyon (4112131), Jess Valley (4112023), Johnstonville (4012045), Lake Annie (4112081), McGinty Reservoir (4112075), Payne Peak (4112053), Shields Creek (4112043), Soup Creek (4112033), Tunnison Mtn. (4012055), Weed Valley (4112087) | |
Threat List Data from the CNDDB
| Threat List Total: | 2 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 2 | 18 % | |
| Logging | 2 | 18% |
| Grazing | 1 | 9% |
Selected References
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Pittonia 3:261 (1898) |
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Mertensia longiflora profile for potential Species of Conservation Concern evaluation (2018) |
| USFS Potential Species of Conservation Concern Profile |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].