Species Details

Wolffia brasiliensis

Brazilian watermeal

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2014 Jeff Greenhouse

Species Description:

Wolffia brasiliensis, commonly known as Brazilian watermeal, is a perennial herb (aquatic) in the Araceae that is found in California and elsewhere. It occurs within Marshes and swamps, growing at elevations from 20 to 100 meters. Wolffia brasiliensis is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification

Scientific Name: Wolffia brasiliensis Wedd.
Common Name: Brazilian watermeal
Family:	Araceae
Element Code:	PMLEM03020
USDA Plants Symbol:	WOBR
Synonyms/Other Names:
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S2
Other Status:
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2021-07-14

Ecology and Life History

Lifeform: perennial herb (aquatic)

Blooming Period: Apr-Dec

Elevation:
20 - 100 meters
65 - 330 feet

General Habitats:

Marshes and swamps (shallow freshwater)

Microhabitat Details:

Microhabitat:

Notes

Notes: Potentially threatened by competition. See Madroño 36(4):283-286 (1989) for first CA occurrence.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	2
	Total EOs	% of EOs
EOs with Threat Listed:	2	33 %
Altered flood/tidal/hydrologic regime	1	16%
Waterway bank protection/maintenance	1	16%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					6
A	B	C	D	X	U
0	1	0	0	0	5

Occurrence Status:
Historical >20 Years	4
Recent <=20 Years	2

Presence:
Presumed Extant	6
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Alabama (AL), Arkansas (AR), California (CA), Connecticut (CT), Delaware (DE), District of Columbia (DC), Florida (FL), Georgia (GA), Illinois (IL), Indiana (IN), Iowa (IA), Kansas (KS), Kentucky (KY), Louisiana (LA), Maryland (MD), Massachusetts (MA), Michigan (MI), Minnesota (MN), Mississippi (MS), Missouri (MO), Montana (MT), Nebraska (NE), New Jersey (NJ), New York (NY), North Carolina (NC), Ohio (OH), Oklahoma (OK), Oregon (OR), Pennsylvania (PA), South Carolina (SC), Tennessee (TN), Texas (TX), Utah (UT), Vermont (VT), Virginia (VA), Washington (WA), West Virginia (WV), Wisconsin (WI)

California Counties and Islands: Name (Code)
Butte (BUT), Glenn (GLE), Sutter (SUT), Yuba (YUB)

Quads: Name (Quad Code)
Camp Far West (3912113), Hamilton City (3912261), Llano Seco (3912158), Ord Ferry (3912168), Pennington (3912137)

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.

Regional Map

Map

Presumed Extant

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory