Species Details

Calystegia collina ssp. oxyphylla

Mt. Saint Helena morning-glory

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Classification

Scientific Name: Calystegia collina (Greene) Brummitt ssp. oxyphylla Brummitt
Common Name: Mt. Saint Helena morning-glory
Family:	Convolvulaceae
Element Code:	PDCON04032
USDA Plants Symbol:	CACOO
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	4.2
Fed List:	None
State List:	None
Global Rank:	G4T3
State Rank:	S3
Other Status:
CRPR Changes:
Add Date:	1984-01-01
Date Edited:	2021-10-04

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Apr-Jun

Elevation:
279 - 1010 meters
915 - 3315 feet

General Habitats:

Chaparral
Lower montane coniferous forest
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Serpentine

Notes

Notes: Threatened by road maintenance. Potentially threatened by wind energy development. See Kew Bulletin 35(2):328 (1980) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	4
	Total EOs	% of EOs
EOs with Threat Listed:	3	33 %
Foot traffic/trampling	2	22%
Road/trail construction/maint.	2	22%
Vandalism/dumping/litter	1	11%
Erosion/runoff	1	11%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					9
A	B	C	D	X	U
2	2	0	0	0	5

Occurrence Status:
Historical >20 Years	9
Recent <=20 Years	0

Presence:
Presumed Extant	9
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Colusa (COL), Lake (LAK), Marin (MRN), Mendocino (MEN), Napa (NAP), San Benito (SBT), Sonoma (SON)

Quads: Name (Quad Code)
Aetna Springs (3812264), Annapolis (3812363), Bartlett Springs (3912226), Cazadero (3812351), Chiles Valley (3812253), Cloverdale (3812371), Detert Reservoir (3812265), Duncans Mills (3812341), Fort Ross (3812352), Highland Springs (3812288), Hopland (3812381), Hough Springs (3912225), Jimtown (3812267), Kenwood (3812245), Leesville (3912224), Mark West Springs (3812256), Middletown (3812275), Mount St. Helena (3812266), San Benito Mtn. (3612036), San Rafael (3712285), The Geysers (3812277), Warm Springs Dam (3812361), Whispering Pines (3812276), Wilbur Springs (3912214)

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

CNPS Rare Plant Inventory