CNPS Inventory Plant Detail

Minuartia howellii

Common Name:	Howell's sandwort
Family:	Caryophyllaceae
Synonyms:	Arenaria howellii
Element Code:	PDCAR0G0F0
Full Name:	Minuartia howellii (Wats.) Mattf.
USDA PLANTS Symbol:	MIHO

Biology
Lifeform: perennial herb Blooming Period: April - July Habitat: serpentinite, xeric. • Chaparral • Lower montane coniferous forest

Rarity Status
CA Rare Plant Rank: 1B.3 Rare, threatened, or endangered in California and elsewhere .3: Not very endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2 S2: Imperiled. Global Rank: G4 G4: Apparently secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 21
Element Occurrence Ranks:

A B C D X U

1 0 0 0 0 20

Population Status:

Historic >20 yrs	Recent <=20 yrs
20	1

Presence:

Present Extant	Possibly Extirpated	Extirpated
21	0	0

Notes
See Proceedings of the American Academy of Arts and Sciences 20:354 (1885) for original description. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1980-01-01 Last Update: 2010-11-29

Location

Elevation: 550 - 1000 meters

California Endemic: no

States: California, Oregon

California Counties and Islands: name (code)
Del Norte (DNT), Siskiyou (SIS)

Quads: name (DWR code) USGS code
Indian Creek Baldy (718A) 41122F7, Broken Rib Mtn. (738B) 41123H6, Shelly Creek Ridge (739A) 41123H7, High Plateau Mtn. (739B) 41123H8, Gasquet (739C) 41123G8, High Divide (740A) 41124H1, Smith River (740B) 41124H2, Hiouchi (740D) 41124G1

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

1103

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-123.75,41.875