Taxon Details

Azolla microphylla

Mexican mosquito fern

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Taxon Summary:

Azolla microphylla, commonly known as Mexican mosquito fern, is a annual/perennial herb in the Azollaceae that is found in California and elsewhere. It occurs within Marshes and swamps (ponds, and slow water), growing at elevations from 30 to 100 meters. Azolla microphylla is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

Classification

Scientific Name: Azolla microphylla Kaulf.
Common Name: Mexican mosquito fern
Family:	Azollaceae
Element Code:	PPAZO01030
USDA Plants Symbol:	AZMI
Synonyms/Other Names: Azolla mexicana
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	4.2
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S4
Other Status:
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: annual/perennial herb

Blooming Period: Aug

Elevation:
30 - 100 meters
100 - 330 feet

General Habitats:

Marshes and swamps (ponds, slow water)

Microhabitat Details:

Microhabitat:

Notes

Notes: Too common? Difficult to distinguish from A. filiculoides, which is common. See American Fern Journal 34(3):69-84 (1944) for a review of New World Azolla.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	0 %

Occurrence Data from the CNDDB

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

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	0

Presence:
Presumed Extant	0
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Arizona (AZ), Arkansas (AR), Baja California (BA), California (CA), Colorado (CO), Idaho (ID), Illinois (IL), Iowa (IA), Isla Guadalupe, Baja (GU), Kansas (KS), Minnesota (MN), Missouri (MO), Montana (MT), Nebraska (NE), Nevada (NV), New Mexico (NM), Oklahoma (OK), Oregon (OR), Texas (TX), Utah (UT), Washington (WA), Wisconsin (WI)

California Counties and Islands: Name (Code)
Butte (BUT), Colusa (COL), Glenn (GLE), Inyo (INY), Kern (KRN), Lake (LAK), Modoc (MOD), Monterey (MNT), Nevada (NEV), Plumas (PLU), San Bernardino (SBD), San Joaquin (SJQ), Santa Cruz (SCR), Tulare (TUL)

Quads: Name (Quad Code)
Alturas (4112045), Biggs (3912146), Camp Far West (3912113), Cholame Valley (3512073), Crescent Mills (4012018), Felton (3712211), Fountain Springs (3511888), Genesee Valley (4012016), Independence (3611872), Keene (3511825), Kelseyville (3812287), Llano Seco (3912158), Loma Rica (3912134), Manzanar (3611862), Miracle Hot Springs (3511855), Nelson (3912157), Oil Center (3511848), Oiler Peak (3511835), Oroville (3912155), Palermo (3912145), Paradise West (3912176), Princeton (3912241), Sausalito School (3511982), Silverwood Lake (3411733), Taylorsville (4012017), Tejon Ranch (3511816), Thornton (3812124), Tupman (3511933), Walker Pass (3511861), Wolf (3912112)

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