Taxon Report
Polygonum hickmanii H.R. Hinds & R. MorganScotts Valley polygonum |
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Classification
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Scientific Name: |
Polygonum hickmanii H.R. Hinds & R. Morgan |
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Common Name: |
Scotts Valley polygonum |
| Family: | Polygonaceae |
| Element Code: | PDPGN0L310 |
| USDA Plants Symbol: | POHI14 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: May-Aug | May-Aug |
| Elevation: | 210-250 (690-820) |
| General Habitats: | Valley and foothill grassland |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 2 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Santa Cruz (SCR) | |
| Quads: Name (Quad Code) | |
| Felton (3712211), Laurel (3712118) | |
Threat List Data from the CNDDB
| Threat List Total: | 8 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 2 | 100 % | |
| Development | 2 | 100% |
| Non-native plant impacts | 2 | 100% |
| Other | 2 | 100% |
| Road/trail construction/maint. | 1 | 50% |
| Altered flood/tidal/hydrologic regime | 1 | 50% |
| ORV activity | 1 | 50% |
| Erosion/runoff | 1 | 50% |
| Insufficient population/stand size | 1 | 50% |
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 January 2025].