CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record heteranthera_dubia - Sat, Dec. 4, 2021, 05:16 ET b
Heteranthera dubia
common namewater star-grass
CalPhotos image
more photos
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life formperennial herb aquatic
CA Rare Plant Rank
List 2B.2
LIST 2B: Rare, threatened, or endangered in California, but more common elsewhere.
     0.2: Fairly endangered in California
state rank
S2      ranking system key
global rank
G5     G5: demonstrably secure to ineradicable
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (12):
San Francisco South (448B) 3712264, San Francisco North (466C) 3712274, Inverness (485D) 3812217, Williams (546B) 3912222, Sanborn Slough (561C) 3912138, Hogback Ridge (661B) 4012184, Fall River Mills (678C) 4112114, Alturas (692A) 4112045, Rattlesnake Butte (692B) 4112046, Canby (693A) 4112047, Washington Mountain (693B) 4112048, Boles Meadows East (710A) 4112067
quad data info

Counties, states, regions:
Butte (BUT), Colusa (COL), Lassen (LAS), Mendocino (MEN), Modoc (MOD), Marin (MRN), San Francisco (SFO), Shasta (SHA), San Mateo (SMT), Alabama (AL), Arkansas (AR), Arizona (AZ), Colorado (CO), Conneticut (CT), District of Columbia (DC), Delaware (DE), Florida (FL), Georgia (GA), Iowa (IA), Idaho (ID), Illinois (IL), Indiana (IN), Kansas (KS), Kentucky (KY), Louisiana (LA), Massachusetts (MA), Maryland (MD), Maine (ME), Michigan (MI), Minnesota (MN), Missouri (MO), Mississippi (MS), Montana (MT), North Carolina (NC), North Dakota (ND), Nebraska (NE), New Hampshire (NH), New Jersey (NJ), New Mexico (NM), New York (NY), Ohio (OH), Oklahoma (OK), Oregon (OR), Pennsylvania (PA), South Dakota (SD), Sonora - Mexico (SO), Tennesee (TN), Texas (TX), Virginia (VA), Vermont (VT), Washington (WA), Wisconsin (WI), West Virginia (WV)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Marshes and swamps (MshSw)(alkaline, still or slow-moving water)/Requires a pH of 7 or higher, usually in slightly eutrophic waters
blooming period Jul-Oct  
elevation range30 - 1495 meters
Many occurrences historical and some possibly extirpated; needs field surveys. See Observationum Botanicarum 3(9):59 (1768) for original description and The Metaspermae of the Minnesota Valley, pp. 138 (1892) by C. MacMillan for taxonomic treatment.
full nameHeteranthera dubia (Jacq.) MacMill.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  HEDU2 Element Code  PMPON03010
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
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Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Sat, Dec. 4, 2021 from

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