Species Details

Montia howellii

Howell's montia

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Classification

Scientific Name: Montia howellii Wats.
Common Name: Howell's montia
Family:	Montiaceae
Element Code:	PDPOR05070
USDA Plants Symbol:	MOHO
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G3G4
State Rank:	S2
Other Status:
CRPR Changes: changed from 2B.2 to 2B.2 on 2020-11-19 changed from 2.2 to 2B.2 on 2006-04-17
Add Date:	1994-01-01
Date Edited:	2022-04-05

Ecology and Life History

Lifeform: annual herb
Blooming Period: (Feb)Mar-May
Elevation: 0 - 835 meters 0 - 2740 feet
General Habitat: Meadows and seeps North Coast coniferous forest Vernal pools
General Micro Habitat:
Micro Habitat: Roadsides (sometimes) Vernally Mesic

Notes

Notes: Rediscovered in CA in 1999 by Clare Golec. Did plant occur in DNT Co.? Candidate for state listing in OR.
Threats: Threatened by logging, road construction, road maintenance, vehicles, and competition. Possibly threatened by non-native plants.
Taxonomy: Sometimes mistaken for M. fontana or M. dichotoma.
Other:

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					123
A	B	C	D	X	U
11	55	32	12	6	7

Occurrence Status:
Historical >20 Years	15
Recent <=20 Years	108

Presence:
Presumed Extant	117
Possibly Extirpated	5
Presumed Extirpated	1

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR), Washington (WA)

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

Quads: Name (Quad Code)
Arcata North (4012481), Arcata South (4012471), Bald Hills (4112328), Blocksburg (4012336), Briceland (4012318)*, Bridgeville (4012347), Broken Rib Mtn. (4112386), Buckeye Mtn. (4012432), Bull Creek (4012431), Capetown (4012443), Eureka (4012472), Ferndale (4012453), Fields Landing (4012462), Fort Seward (4012326), Fortuna (4012452), French Camp Ridge (4112327), Harris (4012316), Hennessy Peak (4012375), High Divide (4112481), Hupa Mountain (4112317), Hydesville (4012451), Iaqua Buttes (4012368), Ironside Mtn. (4012374), Korbel (4012378), Larabee Valley (4012346), Lord-ellis Summit (4012387), Mad River Buttes (4012367), Maple Creek (4012377), McWhinney Creek (4012461), Miranda (4012327)*, Myers Flat (4012337), Orick (4112431), Owl Creek (4012358), Panther Creek (4112318), Redcrest (4012348), Salyer (4012385)*, Scotia (4012441), Taylor Peak (4012442), Weitchpec (4112326), Willow Creek (4012386), Yager Junction (4012357)

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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Counties Quads

Selected References

CNPS Status Review:	Proposed Change from California Rare Plant Rank 2 to 4.2
CNPS Status Review:	Proposed Change from California Rare Plant Rank 2B.2, G3G4 / S2 to 4.3, G4 / S3
Original Description:	Proceedings of the American Academy of Arts and Sciences 18:191 (1883)
Species Account:	Montia howellii profile for potential Species of Conservation Concern evaluation (2022)