Species Details

Ivesia paniculata

Ash Creek ivesia

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Classification

Scientific Name: Ivesia paniculata T.W. Nelson & J.P. Nelson
Common Name: Ash Creek ivesia
Family:	Rosaceae
Element Code:	PDROS0X0S0
USDA Plants Symbol:	IVPA
Synonyms/Other Names:

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_UCSC; USFS_S
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Aug

Elevation:
1500 - 1950 meters
4920 - 6400 feet

General Habitats:

Great Basin scrub
Pinyon and juniper woodland
Upper montane coniferous forest

Microhabitat Details:

Microhabitat:

Gravelly (sometimes)
Rocky (sometimes)
Volcanic

Notes

Notes: Known only from the Ash Valley region. Protected in part at Ash Valley RNA (BLM).
Threats: Threatened by road maintenance, logging, trampling, and grazing.
Taxonomy: Previously included as I. corymbosa, a name that was never validly published.

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	7
	Total EOs	% of EOs
EOs with Threat Listed:	22	85 %
Grazing	18	69%
Road/trail construction/maint.	8	30%
Logging	5	19%
Foot traffic/trampling	5	19%
ORV activity	4	15%
Wood cutting or brush clearing	2	7%
Mining	1	3%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					26
A	B	C	D	X	U
6	12	0	0	1	7

Occurrence Status:
Historical >20 Years	21
Recent <=20 Years	5

Presence:
Presumed Extant	25
Possibly Extirpated	1
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Lassen (LAS), Modoc (MOD)

Quads: Name (Quad Code)
Ambrose Valley (4112027), Ash Valley (4112016), Lane Reservoir (4112017), Letterbox Hill (4112018), Said Valley (4012087), Whitinger Mtn. (4012086)

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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Selected References

Original Description:	Brittonia 33(2):165-167 (1981)
Species Account:	Ivesia paniculata profile for potential Species of Conservation Concern evaluation (2018)
Other:	USFS Potential Species of Conservation Concern Profile
Other:	Fremontia 16(1):15-17 (1988) [BLM management plans]