Taxon Report

Nama stenocarpa A. Gray

mud nama

Print Report

Taxon Summary

Nama stenocarpa, commonly known as mud nama, is a annual/perennial herb in the Namaceae that is found in California and elsewhere. It occurs within Marshes and swamps (lake margins, and riverbanks), growing at elevations from 5 to 500 meters. Nama stenocarpa is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Nama stenocarpa A. Gray
Common Name:	mud nama
Family:	Namaceae
Element Code:	PDHYD0A0H0
USDA Plants Symbol:
Synonyms/Other Names:	Nama stenocarpum Gray

Ecology and Life History


Lifeform:	annual/perennial herb
Blooming Period: Jan-Jul	Jan-Jul
Elevation:	5-500 (15-1640)
General Habitats:	Marshes and swamps
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G4G5
State Rank:	S1S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.2 to 2B.2 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	34
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	3
Fair (C)	2
Poor (D)	2
None (X)	3
Unknown (U)	24

Location


California Endemic: False
California Counties and Islands: Name (Code)
Imperial (IMP), Kings (KNG), Los Angeles (LAX), Orange (ORA), Riverside (RIV), San Diego (SDG)
Quads: Name (Quad Code)
Yuma East (3211465), Beverly Hills (3411814), Black Star Canyon (3311776), Canada Gobernadora (3311755), El Casco (3311781), El Toro (3311766), Guernsey (3611926), Imperial Beach (3211751), Imperial Reservoir (3211484), Jamul Mountains (3211668), Laguna Beach (3311757), Lakeview (3311771), Little Picacho Peak (3211485), Los Alamitos (3311871), Mesa Grande (3311627), Morro Hill (3311733), National City (3211761), Newport Beach (3311768), Niland (3311525), Otay Mesa (3211658), Plaster City (3211577), San Clemente Island North (3211885), San Luis Rey (3311723), Seal Beach (3311861)*, Seeley (3211576), Torrance (3311873), Tustin (3311767), Yuma West (3211466)

Threat List Data from the CNDDB


Threat List Total:	3
EOs with Threat Listed:	Total EOs	% of EOs
	5	15 %
Development	2	5%
Surface water diversion	2	5%
Road/trail construction/maint.	1	2%

Notes



See Proceedings of the American Academy of Arts and Sciences 10:331 (1875) for original description, and American Journal of Botany 20:415-430, 518-534 (1933) for taxonomic treatment.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 9 April 2025].