Taxon Details

Johanneshowellia puberula

downy buckwheat

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Taxon Summary:

Johanneshowellia puberula, commonly known as downy buckwheat, is a annual herb in the Polygonaceae that is found in California and elsewhere. It occurs within Pinyon and juniper woodland (carbonate, and sandy or gravelly), growing at elevations from 1300 to 2900 meters. Johanneshowellia puberula is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification

Scientific Name: Johanneshowellia puberula (S. Watson) Reveal
Common Name: downy buckwheat
Family:	Polygonaceae
Element Code:	PDPGN084X0
USDA Plants Symbol:	JOPU
Synonyms/Other Names: Eriogonum puberulum
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G4?
State Rank:	S1
Other Status:
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: annual herb

Blooming Period: May-Sep

Elevation:
1300 - 2900 meters
4265 - 9515 feet

General Habitats:

Pinyon and juniper woodland (carbonate, sandy or gravelly)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known in CA from only two occurrences in the Cottonwood Mtns. See Phytologia 66(4):383 (1989) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%

Occurrence Data from the CNDDB

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

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	0

Presence:
Presumed Extant	2
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Nevada (NV), Utah (UT)

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

Quads: Name (Quad Code)
Tin Mountain (3611784), White Top Mtn. (3611774)

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