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Humped bladderwort

Utricularia gibba · Aquatic plants

Humped bladderwort: A stand of it

A stand of it · Photo: Robert Hoard / CC BY

NativeSubmerged

Also called Swollen spurred bladderwort, Cone spur bladderwort

How to identify Humped bladderwort

  • Very fine, hairlike stems forming tangled mats
  • Leaves forked once or twice, each with one or two tiny bladders
  • Small yellow flowers with a humped lower lip

Similar plants

Lesser bladderwort has flat leaf segments and bladders on separate stems, and common bladderwort is much larger.

Growth profile

Growing seasonStarts growing in late spring, flowers from midsummer into early fall, and dies back in fall, overwintering as stem pieces and seed.
Starts growingAbout 55 to 60 F water
LightNeeds clear, shallow water
DepthA few inches to 3 feet
How it spreadsStem fragments and seeds
HabitatShallow, warm pond edges and pools, often creeping over mud or floating among other plants.

Why it matters in a lake

Rare in the region and listed as a plant of conservation interest in Idaho and Oregon. Can form small tangled mats in shallow water.

Where it is found

  • Idaho: Rare
  • Oregon: Occasional
  • Wyoming: Not recorded

Classification

KingdomPlantae
PhylumTracheophyta
ClassMagnoliopsida
OrderLamiales
FamilyLentibulariaceae
Scientific nameUtricularia gibba

Need a hand?

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Idaho / Wyoming (208) 501-4531Oregon (541) 280-0596