Taxon Report

Calystegia felix Provance & A.C. Sanders

lucky morning-glory

Print Report

Taxon Summary

Calystegia felix, commonly known as lucky morning-glory, is a annual rhizomatous herb in the Convolvulaceae that is found only in California. It occurs within Meadows and seeps (sometimes alkaline), and Riparian scrub (alluvial), growing at elevations from 30 to 215 meters. Calystegia felix is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Calystegia felix Provance & A.C. Sanders
Common Name:	lucky morning-glory
Family:	Convolvulaceae
Element Code:	PDCON040P0
USDA Plants Symbol:	CAFE11
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual rhizomatous herb
Blooming Period: Mar-Sep	Mar-Sep
Elevation:	30-215 (100-705)
General Habitats:	Meadows and seeps, Riparian scrub
Microhabitat:	Alkaline (sometimes), Loam (sometimes)
Microhabitat Details:	Historically associated with wetland and marshy places, but possibly in drier situations as well. Possibly silty loam and alkaline

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 3.1 to 1B.1 on 2017-12-11 added to 3.1 on 2014-07-16

Occurrence Data from the CNDDB


Total Occurrences:	10
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	1
Unknown (U)	9

Location


California Endemic: True
California Counties and Islands: Name (Code)
Los Angeles (LAX), Riverside (RIV), San Bernardino (SBD)
Quads: Name (Quad Code)
Hollywood (3411813), Los Alamitos (3311871), Ontario (3411716), Prado Dam (3311786), Whittier (3311881)

Threat List Data from the CNDDB


Threat List Total:	4
EOs with Threat Listed:	Total EOs	% of EOs
	6	60 %
Development	5	50%
Other	2	20%
Altered flood/tidal/hydrologic regime	1	10%
Biocides	1	10%

Notes



Discovered in Chino in 2011; originally identified as C. sepium ssp. binghamiae. All recent occurrences are in irrigated landscapes; historically known from natural wetlands and marshes. Historical occurrences in LAX Co. should be searched for; needs field surveys. Not in TJM (1993) or TJM 2. See Madroño 59(1):25-27 (2012) for information on discovery (as C. sepium ssp. binghamiae), and Phytokeys 32:1-26 (2013) for original description.
Threats:
Threatened by transmission line development, housing development, and urbanization. Potentially threatened by hydrological alterations, weeding, and herbicide application.
Taxonomy:

Selected References

Proposed Addition to CRPR 3.1, G1QC (2014)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 8 November 2025].