Taxon Report

Spergularia macrotheca (Hornem. ex Cham. & Schltdl.) Heynh. var. longistyla Rossbach

long-styled sand-spurrey

Print Report

Taxon Summary

Spergularia macrotheca var. longistyla, commonly known as long-styled sand-spurrey, is a perennial herb in the Caryophyllaceae that is found only in California. It occurs within Marshes and swamps, and Meadows and seeps, growing at elevations from 0 to 255 meters. Spergularia macrotheca var. longistyla is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Spergularia macrotheca (Hornem. ex Cham. & Schltdl.) Heynh. var. longistyla Rossbach
Common Name:	long-styled sand-spurrey
Family:	Caryophyllaceae
Element Code:	PDCAR0W062
USDA Plants Symbol:	SPMAL2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Feb-May	Feb-May
Elevation:	0-255 (0-835)
General Habitats:	Marshes and swamps, Meadows and seeps
Microhabitat:	Alkaline
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G5T2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	added to 1B.2 on 2017-06-16

Occurrence Data from the CNDDB


Total Occurrences:	22
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	1
Fair (C)	0
Poor (D)	0
None (X)	1
Unknown (U)	19

Location


California Endemic: True
California Counties and Islands: Name (Code)
Alameda (ALA), Contra Costa (CCA), Napa (NAP), Solano (SOL)
Quads: Name (Quad Code)
Altamont (3712166), Benicia (3812212), Briones Valley (3712282), Byron Hot Springs (3712176), Calistoga (3812255), Clifton Court Forebay (3712175), Fairfield South (3812221), Livermore (3712167), Midway (3712165), Newark (3712251), Niles (3712158), Richmond (3712283), San Leandro (3712262), San Quentin (3712284), Tassajara (3712177), Vine Hill (3812211)

Threat List Data from the CNDDB


Threat List Total:	2
EOs with Threat Listed:	Total EOs	% of EOs
	3	14 %
Development	2	9%
Non-native plant impacts	1	4%

Notes



Threatened by development, habitat alteration, agriculture, and hydrological alterations. Possibly threatened by competition and non-native plants. See Rhodora 42(495):70-79 (1940) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2017-06-16

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].