Taxon Report

Phacelia stebbinsii Const. & Heckard

Stebbins' phacelia

Print Report


  Classification
Scientific Name:
 Phacelia stebbinsii Const. & Heckard
Common Name:
 Stebbins' phacelia
Family: Hydrophyllaceae
Element Code: PDHYD0C4D0
USDA Plants Symbol: PHST6
Synonyms/Other Names:

Ecology and Life History
Lifeform: annual herb
Blooming Period: May-Jul May-Jul
Elevation: 610-2010 (2000-6595)
General Habitats: Cismontane woodland, Lower montane coniferous forest, Meadows and seeps
Microhabitat:
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G3
State Rank:
 S3
State List: None
Fed List: None
Other Status: USFS_S
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 79
Element Occurrence Ranks:
   Excellent (A) 9
   Good (B) 40
   Fair (C) 4
   Poor (D) 0
   None (X) 0
   Unknown (U) 26

Location
California Endemic:  True
California Counties and Islands: Name (Code)
El Dorado (ELD), Nevada (NEV), Placer (PLA)
Quads: Name (Quad Code)
Blue Canyon (3912036), Bunker Hill (3912014), Cisco Grove (3912035), Devil Peak (3812085), Duncan Peak (3912025), Dutch Flat (3912027), Graniteville (3912046), Greek Store (3912015), Homewood (3912012), Loon Lake (3812083), Meeks Bay (3912011), Michigan Bluff (3912016), Norden (3912033), Pollock Pines (3812075), Riverton (3812074), Robbs Peak (3812084), Royal Gorge (3912024), Soda Springs (3912034), Tunnel Hill (3812086), Wentworth Springs (3912013), Westville (3912026)

Threat List Data from the CNDDB

Threat List Total: 13
EOs with Threat Listed: Total EOs % of EOs
39 49 %
Logging 17 21%
Other 14 17%
Recreational use (non-ORV) 10 12%
Road/trail construction/maint. 7 8%
ORV activity 4 5%
Improper burning regime 3 3%
Mining 3 3%
Non-native plant impacts 3 3%
Biocides 2 2%
Erosion/runoff 2 2%
Foot traffic/trampling 1 1%
Grazing 1 1%
Vandalism/dumping/litter 1 1%

Notes
Potentially threatened by logging. Possibly threatened by trail maintenance and non-native plants. See Brittonia 22(1):25-30 (1970) for original description.
Threats:
Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 January 2025].