Species Details

Limosella australis

Delta mudwort

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Photo of Limosella australis
© 2020 Richard Sage
Photo of Limosella australis
© 2020 Richard Sage
Photo of Limosella australis
© 2015 Jean Pawek
CA Rare Plant Rank: 2B.1
Fed List: None
State List: None
Global Rank: G4G5
State Rank:
S2
Other Status:
CRPR Changes:
changed from 2.1 to 2B.1 on 2013-06-12
Add Date: 1994-01-01
Date Edited: 2022-03-01
Lifeform: perennial stoloniferous herb
Blooming Period: May-Aug
JFMAMJJASOND
Elevation:
0 - 3 meters
0 - 10 feet
General Habitats:
  • Marshes and swamps (brackish, freshwater)
  • Riparian scrub
Microhabitat Details: Usually mud banks
Microhabitat:
  • Streambanks (usually)
Notes:
Threatened by stream bank alteration, levee maintenance, erosion, recreational activities, and foot traffic. Also occurs on the Atlantic Coast, where threatened by habitat destruction. Native status in CA is inconclusive; definitive study needed. Treated as naturalized in TJM (1993) and TJM 2. See Prodromus Florae Novae Hollandiae 1:443 (1810) for original description.
Threats:
Taxonomy:
Threat List Total: 10
Total EOs % of EOs
EOs with Threat Listed: 36 61 %
THREAT LIST:
Recreational use (non-ORV) 25 42%
Erosion/runoff 14 23%
Foot traffic/trampling 6 10%
Altered flood/tidal/hydrologic regime 3 5%
Vandalism/dumping/litter 3 5%
Total Occurrences: 59
Element Occurrence Ranks:
A B C D X U
5 30 11 2 0 11
Occurrence Status:
Historical >20 Years 34
Recent <=20 Years 25
Presence:
Presumed Extant 59
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA), Connecticut (CT), Delaware (DE), Maine (ME), Maryland (MD), Massachusetts (MA), New Hampshire (NH), New Jersey (NJ), New York (NY), North Carolina (NC), Pennsylvania (PA), Rhode Island (RI), Virginia (VA), Washington (WA), West Virginia (WV)
California Counties and Islands: Name (Code)
Contra Costa (CCA), Sacramento (SAC), San Joaquin (SJQ), Solano (SOL)
Quads: Name (Quad Code)
Antioch North (3812117), Bouldin Island (3812115), Bruceville (3812134), Clifton Court Forebay (3712175), Courtland (3812135), Dozier (3812137), Holt (3712184), Honker Bay (3812118), Isleton (3812125), Jersey Island (3812116), Rio Vista (3812126), Terminous (3812114), Thornton (3812124), Vine Hill (3812211), Woodward Island (3712185)
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.
Presumed Extant
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