Taxon Report
Eriastrum harwoodii (T.T. Craig) D. GowenHarwood's eriastrum |
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Taxon Summary
Eriastrum harwoodii, commonly known as Harwood's eriastrum, is a annual herb in the Polemoniaceae that is found only in California. It occurs within Desert dunes, growing at elevations from 125 to 915 meters. Eriastrum harwoodii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Eriastrum harwoodii (T.T. Craig) D. Gowen |
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Common Name: |
Harwood's eriastrum |
| Family: | Polemoniaceae |
| Element Code: | PDPLM030B1 |
| USDA Plants Symbol: | ERHA5 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Mar-Jun | Mar-Jun |
| Elevation: | 125-915 (410-3000) |
| General Habitats: | Desert dunes |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_CalBG/RSABG; SB_USDA |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 80 |
| Element Occurrence Ranks: | |
| Excellent (A) | 4 |
| Good (B) | 19 |
| Fair (C) | 9 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 47 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Imperial (IMP), Riverside (RIV), San Bernardino (SBD), San Diego (SDG) | |
| Quads: Name (Quad Code) | |
| Arica Mountains (3411418), Borrego Mountain SE (3311611), Cadiz Lake (3411534), Cadiz Lake NW (3411544), Cadiz Summit (3411554), Cadiz Valley SE (3411513), Calumet Mine (3411545), Calumet Mountains (3411535), Chubbuck (3411533), Clark Lake (3311633), Clarks Pass (3411515), Cowhole Mountain (3511518), Crescent Peak (3511542), Crucero Hill (3511612), Danby Lake (3411521), Desert Hot Springs (3311685), East of Broadwell Lake (3411671), East of Granite Pass (3411511), East of Victory Pass (3311573), Glasgow (3411587), Indian Spring (3511527), Kelso Dunes (3411586), Kingston Peak (3511568), Martinez Mtn. (3311653), Milligan (3411532), Morongo Valley (3411615), New Dale (3411516), Old Dad Mtn. (3511517), Pinto Wells (3311584), Rice (3411417), Roosevelt Mine (3311457), Seventeenmile Point (3511528), Sidewinder Well (3311562), Skeleton Pass (3411553) | |
Threat List Data from the CNDDB
| Threat List Total: | 8 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 39 | 49 % | |
| ORV activity | 35 | 43% |
| Non-native plant impacts | 25 | 31% |
| Development | 23 | 28% |
| Grazing | 10 | 12% |
| Vandalism/dumping/litter | 5 | 6% |
| Other | 1 | 1% |
| Erosion/runoff | 1 | 1% |
| Foot traffic/trampling | 1 | 1% |
Notes
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Threatened by mining, non-native plants, and vehicles. Potentially threatened by solar energy development. Possibly threatened by grazing and trampling. Not in TJM |
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Threats: |
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Taxonomy: |
Selected References
| CRPR List Addition on 2008-07-22 |
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].