CNPS

CNPS Rare Plant Inventory



Taxon Details

Calystegia atriplicifolia ssp. buttensis

Butte County morning-glory

  View Report   Copy Link Calflora eFlora CCH CalPhotos iNaturalist
Photo of Calystegia atriplicifolia ssp. buttensis
©2018 Sierra Pacific Industries 		Photo of Calystegia atriplicifolia ssp. buttensis
©2018 Sierra Pacific Industries 		Photo of Calystegia atriplicifolia ssp. buttensis
©2009 Dean Wm. Taylor, Ph.D.

Taxon Summary:

Calystegia atriplicifolia ssp. buttensis, commonly known as Butte County morning-glory, is a perennial rhizomatous herb in the Convolvulaceae that is found only in California. It occurs within Chaparral, Lower montane coniferous forest, and Valley and foothill grassland, growing at elevations from 565 to 1524 meters. Calystegia atriplicifolia ssp. buttensis is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

  Classification

Scientific Name:
Calystegia atriplicifolia Hallier f. ssp. buttensis Brummitt
Common Name:
Butte County morning-glory
Family: Convolvulaceae
Element Code: PDCON04012
USDA Plants Symbol: CAATB
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: G5T3
State Rank:
 S3
Other Status:
CRPR Changes:
changed from 1B.2 to 4.2 on 2009-04-30
Add Date: 1984-01-01
Date Edited: 2023-06-06

  Ecology and Life History

Lifeform: perennial rhizomatous herb
Blooming Period: May-Jul
JFMAMJJASOND
Elevation:
565 - 1524 meters
1855 - 5000 feet
General Habitats:
  • Chaparral
  • Lower montane coniferous forest
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
  • Roadsides (sometimes)
  • Rocky

  Notes

Notes:
Possibly threatened by logging and road maintenance. Can be variable. Plants from DNT Co. intermediate to ssp. atriplicifolia, and plants from MEN Co. (600A) need confirmation. See Kew Bulletin 35(2):327 (1980) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 10
Total EOs % of EOs
EOs with Threat Listed: 75 62 %
THREAT LIST:
Road/trail construction/maint. 48 39%
Logging 45 37%
Biocides 16 13%
Other 9 7%
ORV activity 2 1%

  Occurrence Data from the CNDDB

Total Occurrences: 121
Element Occurrence Ranks:
A B C D X U
3 34 16 4 0 64
Occurrence Status:
Historical >20 Years 61
Recent <=20 Years 60
Presence:
Presumed Extant 121
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Butte (BUT), Del Norte (DNT), Mendocino (MEN)?, Shasta (SHA), Tehama (TEH)
Quads: Name (Quad Code)
Barkley Mtn. (4012126), Bell Springs (3912385), Big Bend (4112118), Butte Meadows (4012115), Chalk Mtn. (4012187), Cohasset (3912186), Devils Parade Ground (4012116), Devils Rock (4012271), Goose Gap (4012281), Hatchet Mtn. Pass (4012177), Hiouchi (4112471), Ishi Caves (4012117), Jonesville (4012114), Kimshew Point (3912184), Montgomery Creek (4012178), Onion Butte (4012125), Paradise East (3912175), Paradise West (3912176), Roaring Creek (4012188), Shoeinhorse Mtn. (4112211), Stirling City (3912185)
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 Rank Change from CRPR 1B.2 to 4.2 (2009)

Go to top


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 26 January 2025].
}