Taxon Details

Githopsis diffusa ssp. filicaulis

Mission Canyon bluecup

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Taxon Summary:

Githopsis diffusa ssp. filicaulis, commonly known as Mission Canyon bluecup, is a annual herb in the Campanulaceae that is found only in California. It occurs within Chaparral, Coastal scrub, and Riparian woodland, growing at elevations from 30 to 1570 meters. Githopsis diffusa ssp. filicaulis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Githopsis diffusa A. Gray ssp. filicaulis (Ewan) Morin
Common Name: Mission Canyon bluecup
Family:	Campanulaceae
Element Code:	PDCAM07023
USDA Plants Symbol:	GIFI3
Synonyms/Other Names: Githopsis filicaulis Ewan
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G5T1Q
State Rank:	S1
Other Status:
CRPR Changes: changed from 3.1 to 1B.2 on 2026-01-21
Add Date:	1980-01-01
Date Edited:	2026-01-21

Ecology and Life History

Lifeform: annual herb

Blooming Period: (Apr)May(Jun)

Elevation:
30 - 1570 meters
100 - 5150 feet

General Habitats:

Chaparral
Coastal scrub
Riparian woodland

Microhabitat Details:

Microhabitat:

Clay
Gabbroic
Granitic
Gravelly
Metamorphic
Openings
Rocky
Seeps
Serpentine
Vernally Mesic

Notes

Notes:
Threats: Approximately one quarter of its historical occurrences are possibly extirpated by urbanization and mining.
Taxonomy: Distinguished from other subspecies of G. diffusa by its extremely narrow, thread-like stems (upper stems 0.2-0.4 mm in diameter) and white to pale pink corollas 1.5-5 mm long.

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					3
A	B	C	D	X	U
0	0	0	0	0	3

Occurrence Status:
Historical >20 Years	3
Recent <=20 Years	0

Presence:
Presumed Extant	3
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Riverside (RIV), San Diego (SDG)

Quads: Name (Quad Code)
El Cajon Mtn. (3211687), Sage (3311658), San Vicente Reservoir (3211688)

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 Status Review:	CNPS Status Review: Proposed change from CRPR 3.1, G5T1Q / S1 to 1B.2, G5T2 / S2 (2026)
Original Description:	Rhodora 41: 312 (1939)
Revised Nomenclature:	Systematic Botany 8(4): 465 (1983)

CNPS Rare Plant Inventory