Species Details

Calystegia purpurata ssp. saxicola

coastal bluff morning-glory

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Species Description:

Calystegia purpurata ssp. saxicola, commonly known as coastal bluff morning-glory, is a perennial herb in the Convolvulaceae that is found only in California. It occurs within Coastal bluff scrub, Coastal dunes, Coastal scrub, and North Coast coniferous forest, growing at elevations from 0 to 105 meters. Calystegia purpurata ssp. saxicola is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Calystegia purpurata (Greene) Brummitt ssp. saxicola (Eastw.) Brummitt
Common Name: coastal bluff morning-glory
Family:	Convolvulaceae
Element Code:	PDCON040D2
USDA Plants Symbol:	CAPUS
Synonyms/Other Names:
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G4T2T3
State Rank:	S2S3
Other Status:	BLM_S; SB_UCSC
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: (Mar)Apr-Sep

Elevation:
0 - 105 meters
0 - 345 feet

General Habitats:

Coastal bluff scrub
Coastal dunes
Coastal scrub
North Coast coniferous forest

Microhabitat Details:

Microhabitat:

Notes

Notes: Threatened by development, foot traffic, and non-native plants. See Bulletin of the Torrey Botanical Club 30(9):495 (1903) for original description, and Annals of the Missouri Botanical Garden 52(2):214 (1965) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	8
	Total EOs	% of EOs
EOs with Threat Listed:	20	48 %
Non-native plant impacts	10	23%
Road/trail construction/maint.	6	14%
Foot traffic/trampling	5	11%
Grazing	5	11%
Development	4	9%
Other	3	7%
Recreational use (non-ORV)	1	2%
Erosion/runoff	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					42
A	B	C	D	X	U
3	11	7	1	0	20

Occurrence Status:
Historical >20 Years	18
Recent <=20 Years	24

Presence:
Presumed Extant	42
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Contra Costa (CCA), Marin (MRN), Mendocino (MEN), Sonoma (SON)

Quads: Name (Quad Code)
Albion (3912327), Arched Rock (3812342), Bodega Head (3812331), Drakes Bay (3812218), Duncans Mills (3812341), Fort Bragg (3912347), Gualala (3812375), Mendocino (3912337), Plantation (3812353), Point Arena (3812386), Point Bonita (3712275), Richmond (3712283)?, Saunders Reef (3812376), Stewarts Point (3812364), Tomales (3812228), Valley Ford (3812238)

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

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CNPS Rare Plant Inventory