Taxon Details

Horkelia howellii

Howell’s horkelia

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Taxon Summary:

Horkelia howellii, commonly known as Howell’s horkelia, is a perennial herb in the Rosaceae that is . It occurs within Chaparral, and Lower montane coniferous forest, growing at elevations from 60 to 1200 meters. Horkelia howellii is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification

Scientific Name: Horkelia howellii Horkelia howellii (Greene) Rydb.
Common Name: Howell’s horkelia
Family:	Rosaceae
Element Code:	PDROS0W0M0
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	4.3
Fed List:	None
State List:	None
Global Rank:	G4
State Rank:	S3
Other Status:
CRPR Changes: added to 4.3 on 2021-04-23
Add Date:	2021-04-23
Date Edited:	2021-09-30

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Aug

Elevation:
60 - 1200 meters
195 - 3935 feet

General Habitats:

Chaparral
Lower montane coniferous forest

Microhabitat Details:

Microhabitat:

Clay
Serpentine

Notes

Notes:
Threats:
Taxonomy: Previously included in H. sericata.

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

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

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

Presence:
Presumed Extant	0
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM)

Quads: Name (Quad Code)
Bark Shanty Gulch (4112345), Broken Rib Mtn. (4112386), Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Hiouchi (4112471), Orleans (4112335), Orleans Mtn. (4112334), Shelly Creek Ridge (4112387), Somes Bar (4112344)

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