Native Plants

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Smith, R.W.

Utricularia intermedia

Utricularia intermedia Hayne

Flatleaf Bladderwort, Mountain Bladderwort

Lentibulariaceae (Bladderwort Family)

Synonym(s):

USDA Symbol: UTIN2

USDA Native Status: L48 (N), AK (N), CAN (N), GL (N), SPM (N)

In all species of Utricularia the bladders are elaborate traps. When a small organism brushes hairs near a bladder pore, the pores tiny door opens inward and water rushes inside, carrying the organism with it. The door quickly closes, the trapping process taking 1/460 second. Enzymes digest the victim. Comparatively large organisms, such as mosquito larvae, may be caught in the door; if the door is repeatedly triggered, they are then digested little by little. Utricularia intermedia has bladders on special branches distinct from the leaves.

From the Image Gallery

3 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb

Bloom Information

Bloom Color: Yellow
Bloom Time: Jul , Aug

Distribution

USA: AK , CA , CT , IA , ID , IL , IN , MA , MD , ME , MI , MN , MT , ND , NH , NJ , NV , NY , OH , OR , PA , RI , UT , VT , WA , WI , WY
Canada: NB , NL , NS

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	OBL	OBL	OBL		OBL	OBL		OBL	OBL	OBL

This information is derived from: U.S. Army Corps of Engineers. (2023). 2022 National Wetland Plant List, version 3.6. U.S. Army Engineer Research and Development Center, Vicksburg, MS. https://wetland-plants.usace.army.mil/. Click here for map of regions.

Web Reference

Webref 30 - Calflora (2018) Calflora
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Utricularia intermedia in USDA Plants
FNA: Find Utricularia intermedia in the Flora of North America (if available)
Google: Search Google for Utricularia intermedia

Metadata

Record Modified: 0000-00-00
Research By: TWC Staff

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