Taxon Details

Ivesia pickeringii

Pickering's ivesia

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Taxon Summary:

Ivesia pickeringii, commonly known as Pickering's ivesia, is a perennial herb in the Rosaceae that is found only in California. It occurs within Lower montane coniferous forest, and Meadows and seeps, growing at elevations from 800 to 1510 meters. Ivesia pickeringii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Ivesia pickeringii Gray
Common Name: Pickering's ivesia
Family:	Rosaceae
Element Code:	PDROS0X0D0
USDA Plants Symbol:	IVPI
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	BLM_S; SB_CalBG/RSABG; USFS_S
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Aug(Oct)

Elevation:
800 - 1510 meters
2625 - 4955 feet

General Habitats:

Lower montane coniferous forest
Meadows and seeps

Microhabitat Details:

Microhabitat:

Clay
Mesic
Seeps (usually)
Serpentine (usually)

Notes

Notes: Threatened by grazing, logging, mining, road maintenance, and habitat loss. Klamath NF has adopted species management guidelines. See Proceedings of the American Academy of Arts and Sciences 6:531 (1865) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	8
	Total EOs	% of EOs
EOs with Threat Listed:	9	69 %
Logging	5	38%
Road/trail construction/maint.	5	38%
Grazing	4	30%
Other	3	23%
Erosion/runoff	2	15%
Improper burning regime	1	7%
Mining	1	7%
Non-native plant impacts	1	7%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					13
A	B	C	D	X	U
4	4	3	0	0	2

Occurrence Status:
Historical >20 Years	5
Recent <=20 Years	8

Presence:
Presumed Extant	13
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Siskiyou (SIS), Trinity (TRI)

Quads: Name (Quad Code)
Callahan (4112237), China Mtn. (4112245), Covington Mill (4012287), Scott Mountain (4112236), Tangle Blue Lake (4112226), Weed (4112244), Whisky Bill Peak (4112215)

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