Taxon Details

Eriogonum intrafractum

jointed buckwheat

View Report Copy Link Calflora eFlora CCH CalPhotos iNaturalist

Taxon Summary:

Eriogonum intrafractum, commonly known as jointed buckwheat, is a perennial herb in the Polygonaceae that is found only in California. It occurs within Mojavean desert scrub, growing at elevations from 610 to 1950 meters. Eriogonum intrafractum is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Eriogonum intrafractum Cov. & Mort.
Common Name: jointed buckwheat
Family:	Polygonaceae
Element Code:	PDPGN08360
USDA Plants Symbol:	ERIN5
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Oct

Elevation:
610 - 1950 meters
2000 - 6400 feet

General Habitats:

Mojavean desert scrub (carbonate)

Microhabitat Details:

Microhabitat:

Notes

Notes: See Journal of the Washington Academy of Sciences 26:305 (1936) for original description, and Phytologia 66(4):359 (1989) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	6
	Total EOs	% of EOs
EOs with Threat Listed:	4	29 %
Grazing	2	14%
Non-native animal impacts	1	7%
Non-native plant impacts	1	7%
Other	1	7%
Over-collecting/poaching	1	7%
Foot traffic/trampling	1	7%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					14
A	B	C	D	X	U
2	2	0	1	0	9

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	3

Presence:
Presumed Extant	14
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Inyo (INY)

Quads: Name (Quad Code)
Echo Canyon (3611646), Fall Canyon (3611772), Grotto Canyon (3611751), Panamint Butte (3611743), Thimble Peak (3611771), Wahguyhe Peak (3611781), Wildrose Peak (3611731)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory