CNPS Inventory Plant Detail

Ceanothus roderickii

Common Name:	Pine Hill ceanothus
Family:	Rhamnaceae
Synonyms:
Element Code:	PDRHA04190
Full Name:	Ceanothus roderickii Knight
USDA PLANTS Symbol:	CERO4

Biology
Lifeform: perennial evergreen shrub Blooming Period: April - June Habitat: Serpentinite or gabbroic (nutrient-deficient forms of gabbro-derived soils characterized by low concentrations of available K, P, S, Fe, and Zn).. • Chaparral • Cismontane woodland

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: FE Endangered (10/18/96) State Listing Status: CR Rare (07/82) 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
3	5

Presence:

Present Extant	Possibly Extirpated	Extirpated
8	0	0

Notes

Threatened by residential development, road widening, vehicles, illegal dumping, and alteration of fire regimes. Possibly threatened by herbivores and non-native plants. See Four Seasons 2(4):23-24 (1968) for original description, Madroño 54(1): 13-21 (2007) for information on the effect of fire on the species, and Madroño 58(1):1-21 (2011) for information on the edaphic ecology and genetics on the species.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1974-01-01
Last Update: 2011-10-17

Location

Elevation: 245 - 630 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
El Dorado (ELD)

Quads: name (DWR code) USGS code
Shingle Springs (510B) 38120F8, Clarksville (511A) 38121F1, Pilot Hill (527D) 38121G1

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

217

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

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

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