Taxon Report
Acanthoscyphus parishii (Parry) Small var. goodmaniana (Ertter) RevealCushenbury oxytheca |
 © 2018 Michael Charters |
Taxon Summary
Acanthoscyphus parishii var. goodmaniana, commonly known as Cushenbury oxytheca, is a annual herb in the Polygonaceae that is found only in California. It occurs within Pinyon and juniper woodland (carbonate, and talus), growing at elevations from 1219 to 2377 meters. Acanthoscyphus parishii var. goodmaniana is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Acanthoscyphus parishii (Parry) Small var. goodmaniana (Ertter) Reveal |
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Common Name: |
Cushenbury oxytheca |
| Family: | Polygonaceae |
| Element Code: | PDPGN0J043 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: May-Oct | May-Oct |
| Elevation: | 1219-2377 (4000-7800) |
| General Habitats: | Pinyon and juniper woodland |
| Microhabitat: | Carbonate, Sandy |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G4?T1 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 21 |
| Element Occurrence Ranks: | |
| Excellent (A) | 5 |
| Good (B) | 4 |
| Fair (C) | 3 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 8 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| Big Bear City (3411637), Butler Peak (3411731), Fawnskin (3411638), Fifteenmile Valley (3411741), Onyx Peak (3411626) | |
Threat List Data from the CNDDB
| Threat List Total: | 6 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 15 | 71 % | |
| Mining | 15 | 71% |
| Road/trail construction/maint. | 6 | 28% |
| ORV activity | 3 | 14% |
| Improper burning regime | 2 | 9% |
| Altered flood/tidal/hydrologic regime | 1 | 4% |
| Non-native plant impacts | 1 | 4% |
Notes
| Threatened by carbonate mining, non-native plants, powerline maintenance, and vehicles. See Brittonia 32: 70-102 (1980) for original description, Harvard Papers in Botany 9(1): 144 (2004) for revised nomenclature, and Phytologia 66(4): 386-387 (1989) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
Selected References
| Recovery Plan for Acanthoscyphus parishii var. goodmaniana (Cushenbury oxytheca) (USFWS 1997) |
| USFWS Critical Habitat (2002) On BIOS viewer |
| USFWS Critical Habitat Shapefile (2002) |
Citation
California Native Plant Society, Rare Plant Program. 2026. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 4 April 2026].