Species Details

Hesperocyparis stephensonii

Cuyamaca cypress

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Classification

Scientific Name: Hesperocyparis stephensonii (C. B. Wolf) Bartel
Common Name: Cuyamaca cypress
Family:	Cupressaceae
Element Code:	PGCUP04013
USDA Plants Symbol:	HEST10
Synonyms/Other Names: Cupressus stephensonii C. B. Wolf Callitropsis stephensonii

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	None
Global Rank:	G1
State Rank:	S1
Other Status:	SB_CalBG/RSABG; USFS_S
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2022-01-05

Ecology and Life History

Lifeform: perennial evergreen tree

Blooming Period:

Elevation:
1035 - 1705 meters
3395 - 5595 feet

General Habitats:

Closed-cone coniferous forest
Chaparral
Cismontane woodland
Riparian forest

Microhabitat Details:

Microhabitat:

Gabbroic

Notes

Notes: Threatened by alteration of fire regimes, specifically frequent wildfires; the 1950 Conejo fire extirpated plant over part of its range. Possibly threatened by mining Cleveland NF has adopted species management guidelines. Protected in part at King Creek RNA (USFS). A synonym of C. arizonica ssp. arizonica in TJM (1993), but genetic evidence does not support this interpretation.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	1
	Total EOs	% of EOs
EOs with Threat Listed:	3	60 %
Improper burning regime	3	60%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					5
A	B	C	D	X	U
0	0	0	0	1	4

Occurrence Status:
Historical >20 Years	3
Recent <=20 Years	2

Presence:
Presumed Extant	4
Possibly Extirpated	0
Presumed Extirpated	1

Location

California Endemic:

California Island:

States: Name (Code)
Baja California (BA), California (CA)

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

Quads: Name (Quad Code)
Cuyamaca Peak (3211685), Mount Laguna (3211674), Tule Springs (3211686)

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