CNPS

CNPS Rare Plant Inventory



Taxon Details

Acanthoscyphus parishii var. parishii

Parish's oxytheca

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Photo of Acanthoscyphus parishii var. parishii
© 2014 Keir Morse 		Photo of Acanthoscyphus parishii var. parishii
© 2014 Keir Morse 		Photo of Acanthoscyphus parishii var. parishii
© 2014 Keir Morse

Taxon Summary:

Acanthoscyphus parishii var. parishii, commonly known as Parish's oxytheca, is a annual herb in the Polygonaceae that is found only in California. It occurs within Chaparral, and Lower montane coniferous forest, growing at elevations from 1220 to 2600 meters. Acanthoscyphus parishii var. parishii is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

  Classification

Scientific Name:
Acanthoscyphus parishii (Parry) Small var. parishii
Common Name:
Parish's oxytheca
Family: Polygonaceae
Element Code: PDPGN0J044
USDA Plants Symbol:
Synonyms/Other Names:
Name Status: JEF, FNA, POWO,
IPNI, Tropicos

  Conservation Status

CA Rare Plant Rank: 4.2
Fed List: None
State List: None
Global Rank: G4?T3T4
State Rank:
 S3S4
Other Status: SB_CalBG/RSABG
CRPR Changes:
added to 4.2 on 2007-04-05
Add Date: 2007-04-05
Date Edited: 2022-12-06

  Ecology and Life History

Lifeform: annual herb
Blooming Period: Jun-Sep
JFMAMJJASOND
Elevation:
1220 - 2600 meters
4005 - 8530 feet
General Habitats:
  • Chaparral
  • Lower montane coniferous forest
Microhabitat Details:
Microhabitat:
  • Gravelly (sometimes)
  • Sandy (sometimes)

  Notes

Notes:
See Oxytheca parishii var. parishii in The Jepson Manual (1993). See Proceedings of the Davenport Academy of Natural Sciences 3: 176 (1882) for original description and Harvard Papers in Botany 9: 143-230 (2004) for revised nomenclature.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 0
Total EOs % of EOs
EOs with Threat Listed: 0 0 %
THREAT LIST:

  Occurrence Data from the CNDDB

Total Occurrences: 0
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 0
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 0
Presence:
Presumed Extant 0
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Los Angeles (LAX), San Bernardino (SBD), Ventura (VEN)
Quads: Name (Quad Code)
Acton (3411842)?, Alamo Mountain (3411868), Big Bear Lake (3411628), Chilao Flat (3411831), Crystal Lake (3411737), Harrison Mtn. (3411722), Keller Peak (3411721), Lake Arrowhead (3411732), Mescal Creek (3411746), Mount San Antonio (3411736), Mt. Baldy (3411726), Mt. Wilson (3411821), Pacifico Mountain (3411841), Reyes Peak (3411963), Telegraph Peak (3411735), Waterman Mtn. (3411738)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

CNPS Status Review: Proposed Addition to California Rare Plant Rank 4.2 (2007)

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Suggested Citation:
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 20 July 2025].
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