Utricularia macrorhiza
 
Greater Bladderwort

Whole Plant

6.5 km North on Silica Sands Road, East of Hudson Bay
10-July-2021

Note the leaves are usually, but not always, divided into two primary branches at the base.  Each primary branch is then unequally dichotomously divided several times resulting in a pseudo-pinnate appearance.  A single leaf with two primary branches is labeled SL in the picture.

Macrorhiza: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 

plants coarse; NOT [plants delicate]

stems either submersed or floating; NOT [stems creeping on bottom in shallow water]

stem at least 0.5 mm thick; NOT [stem less than 0.5 mm thick]

leaves readily seen; NOT [leaves obscure]

leaves finely dissected; NOT [leaves thread-like, simple]

leaves terete, capillary; NOT [leaves flattened]

leaves and bladders born on the same branch; NOT [leaves and bladders born on separate branches]

bladders readily seen;  NOT [bladders minute]

bladders abundant; NOT [bladders few]

flowers 15-25 mm long; NOT [flowers 3-10 mm long]

 

Utricularia: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus. 

plants floating on or submersed in water; NOT [land plants]

leaves not in a basal rosette

leaves usually dissected; NOT [leaves entire]

leaves bearing small bladders

flowers several in a raceme above water; NOT [flowers solitary]

calyx with 2 sepals; NOT [calyx with 5 sepals]

flowers yellow; NOT [flowers bluish violet]

 

Lentibulariaceae: Answers to key questions in Budd's Flora  leading to this family. 

herbs; NOT [shrubs or trees]

plants green or with some chlorophyll

plants aquatic

flowers NOT in heads or spikes

corolla irregular; NOT [corolla regular]

corolla spurred

ovary superior; NOT [ovary inferior]