CNPS

CNPS Rare Plant Inventory

Species Details

Castilleja ambigua var. meadii

Mead's owls-clover

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Classification

Scientific Name:
Castilleja ambigua Hook. & Arn. var. meadii J.M. Egger & J.A. Ruygt
Common Name:
Mead's owls-clover
Family: Orobanchaceae
Element Code: PDSCR0D404
USDA Plants Symbol: CAAMM
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank: 1B.1
Fed List: None
State List: None
Global Rank: G4T1
State Rank:
 S1
Other Status:
CRPR Changes:
added to 1B.1 on 2013-01-03
Add Date: 2013-01-03
Date Edited: 2021-10-04

Ecology and Life History

Lifeform: annual herb (hemiparasitic)
Blooming Period: Apr-May
Elevation:
450 - 475 meters
1475 - 1560 feet
General Habitat:
  • Meadows and seeps
  • Vernal pools
General Micro Habitat:
Micro Habitat:
  • Clay
  • Gravelly
  • Volcanic

Notes

Notes:
Known only from the Atlas Peak area; needs field surveys. Threatened by non-native plants. Potentially threatened by vineyard development. Not in TJM 2. See Phytoneuron 2012-68:1-12 (2012) for original description.
Threats:
Taxonomy:
Other:

Occurrence Data from the CNDDB

Total Occurrences: 3
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 3
Occurrence Status:
Historical >20 Years 1
Recent <=20 Years 2
Presence:
Presumed Extant 3
Possibly Extirpated 0
Presumed Extirpated 0

Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Napa (NAP)
Quads: Name (Quad Code)
Capell Valley (3812242), Yountville (3812243)
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
Print this Map
Counties   Quads

Selected References

CNPS Status Review: CRPR List Addition on 2013-01-03
Suggested Citation:
California Native Plant Society, Rare Plant Program. 2022. Rare Plant Inventory (online edition, v9-01 1.5). Website https://www.rareplants.cnps.org [accessed 1 December 2022].