CNPS Inventory Plant Detail

Hesperocyparis stephensonii

Common Name:	Cuyamaca cypress
Family:	Cupressaceae
Synonyms:	Callitropsis stephensonii, Cupressus stephensonii
Element Code:	PGCUP040B0
Full Name:	Hesperocyparis stephensonii (C. B. Wolf) Bartel
USDA PLANTS Symbol:

Biology
Lifeform: perennial evergreen tree Blooming Period: Habitat: gabbroic. • Closed-cone coniferous forest • Chaparral • Cismontane woodland • Riparian forest

Rarity Status
Rare Plant Rank: 1B.1 Rare, threatened, or endangered in California and elsewhere .1: Seriously endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S1 S1: Critically Imperiled. Global Rank: G1 G1: Critically Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Historic >20 yrs	Recent <=20 yrs
5	0

Presence:

Present Extant	Possibly Extirpated	Extirpated
4	0	1

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 The Jepson Manual (1993), but genetic evidence does not support this interpretation.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1980-01-01
Last Update: 2011-12-29

Location

Elevation: 1035 - 1705 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
San Diego (SDG)

Quads: name (DWR code) USGS code
Cuyamaca Peak (020A) 32116H5, Tule Springs (020B) 32116H6, Descanso (020D) 32116G5

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

539

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Wildlife: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society. Sacramento, CA. Accessed on .

-116.5,32.875