Species Details

Howellanthus dalesianus

Scott Mountain howellanthus

Download Report Calflora eFlora CCH CalPhotos

Aaron Schusteff 2008

Steve Matson 2011

Classification

Scientific Name: Howellanthus dalesianus (Constance) Walden & R. Patt.
Common Name: Scott Mountain howellanthus
Family:	Hydrophyllaceae
Element Code:	PDHYD0C140
USDA Plants Symbol:	HODA2
Synonyms/Other Names: Phacelia dalesiana

Conservation Status

CA Rare Plant Rank:	4.3
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-08-25

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Jul(Aug)

Elevation:
1025 - 2105 meters
3365 - 6905 feet

General Habitats:

Lower montane coniferous forest
Meadows and seeps
Subalpine coniferous forest
Upper montane coniferous forest

Microhabitat Details:

Microhabitat:

Serpentine

Notes

Notes: Possibly threatened by logging and grazing. See Phacelia dalesiana in TJM (1993) and TJM 2. See Leaflets of Western Botany 2:51 (1937) for original description, and Madroño 57(4):268-273 (2010) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	8
	Total EOs	% of EOs
EOs with Threat Listed:	38	83 %
Logging	26	56%
Grazing	11	23%
Road/trail construction/maint.	7	15%
Foot traffic/trampling	5	10%
Recreational use (non-ORV)	3	6%
Erosion/runoff	2	4%
ORV activity	2	4%
Other	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					46
A	B	C	D	X	U
2	22	4	0	0	18

Occurrence Status:
Historical >20 Years	46
Recent <=20 Years	0

Presence:
Presumed Extant	46
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

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

Quads: Name (Quad Code)
Carrville (4112216), Chicken Hawk Hill (4112214), Lake McCloud (4112221), Mount Eddy (4112234), Mumbo Basin (4112225), Scott Mountain (4112236), Seven Lakes Basin (4112224), South China Mtn. (4112235), Tangle Blue Lake (4112226), Whisky Bill Peak (4112215), Ycatapom Peak (4112217)

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

Other:

USFS Potential Species of Conservation Concern Profile