yellow wood sorrel

(Oxalis stricta)

               
Conservation Status

IUCN Red List

not yet assessed

yellow wood sorrel

NatureServe

N5 - Secure

SNR - Unranked

Minnesota

not listed

Wetland
Indicator
Status

Great Plains

FACU - Facultative upland

Midwest

FACU - Facultative upland

Northcentral & Northeast

FACU - Facultative upland

Nativity

Native

 
Occurrence

Common and widespread

 
Habitat

Dry. Prairies, disturbed sites.

 
Flowering

May to October

     
Flower Color

Yellow

     
Height

6 to 24

     

Identification

This is an 6 to 24, but usually 6 to 12 tall, usually erect, sometimes lying flat on the ground, bushy, perennial forb rising on a central, branching stem from a long, slender rhizome.

The stems have two types of hairs. They are sparsely to moderately covered with short, loosely appressed or upward curving hairs. They are also sparsely to densely covered with long spreading hairs.

The leaves are alternate and on long leaf stalks. They are palmately divided into three leaflets.

The leaflets are to ¾ wide and inversely heart-shaped with the attachment at the narrow end. They are gray-green or green and usually hairless, but sometimes have a fringe of hairs along the margin. The margins are untoothed. The leaflets open and spread outwards during the day. They fold closed along the midrib and droop downward at night. They also close under intense sunlight. They repel water, so that after a rain they look dry with water beads on the surface.

The inflorescence is a branched cluster of 2 to 7 flowers usually held below the leaves. The central flower is flanked by two branches, each bearing 2 or more flowers.

The flowers are about ½ wide on long flower stalks that position them above the leaves. They have 5 petals and 5 much shorter sepals which are visible between the petals. Like the leaves, they close at night.

The fruit is a to ½ capsule held on an erect, unbent stalk.

 
Similar
Species

Southern yellow wood sorrel (Oxalis dillenii) does not grow from a rhizome. The stems have short, appressed or upward curving hairs but do not have long, spreading hairs. The inflorescence may be a single flower or an umbrella-like, unbranched flower cluster, with all flowers arising from the same point. The fruit is a ½ to 1 capsule held on an erect, unbent stalk. In Minnesota it is widespread but much less common.


Distribution Distribution Map   Sources: 2, 3, 4, 5, 7, 28.

Comments

 


Taxonomy

Family:

Oxalidaceae (wood-sorrel)

 
Synonyms

Acetosella chinensis

Acetosella fontana

Oxalis chinensis

Oxalis corniculata var. stricta

Oxalis cymosa

Oxalis diffusa

Oxalis europaea

Oxalis fontana

Oxalis repens var. stricta

 

Oxalis shinanoensis

Oxalis stricta var. decumbens

Oxalis stricta var. piletocarpa

Oxalis stricta var. rufa

Oxalis stricta var. villicaulis

Xanthoxalis cymosa

Xanthoxalis europaea

Xanthoxalis stricta

Xanthoxalis stricta var. piletocarpa

 
Common
Names

common yellow oxalis

erect woodsorrel

sheep sorrel

sourgrass

tall wood sorrel

toad sorrel

 

upright yellow sorrel

upright yellow wood-sorrel

upright yellow woodsorrel

yellow woodsorrel

yellow wood sorrel


 

 

 

 

 

 

 

 

 

Glossary

palmate

Similar to a hand. Having more than three lobes or leaflets that radiate from a single point at the base of the leaf.

 

rhizome

A horizontal, usually underground stem. It serves as a reproductive structure, producing roots below and shoots above at the nodes.

 

sepal

An outer floral leaf, usually green but sometimes colored, at the base of a flower.

       

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MinnesotaSeasons.com Photos

   

Plant

  yellow wood sorrel    
       

Flower

  yellow wood sorrel    
       

Leaves

  yellow wood sorrel   yellow wood sorrel
       
       

 

Camera

     

Slideshows

   
  Yellow Wood Sorrel
Andree Reno Sanborn
 
  Yellow Wood Sorrel  
 
About

also called sour grass

Oxalis europaea

 
     
  Oxalis stricta COMMON WOOD SORREL
Frank Mayfield
 
  Oxalis stricta COMMON WOOD SORREL  
     
  Oxalis stricta | Yellow Woodsorrel (Pt 1 of 2)
SurvivalPlantsMemory
 
   
 
About

Published on Jul 9, 2012

Visit Website: http://www.survivalplantsmemorycourse.com/

Photos used under protection of the "fair use" section (107) of the U.S. copyright act of 1976. http://www.youtube.com/watch?v=S521VcjhvMA&feature=player_embedded

 
     
  Oxalis stricta | Yellow Woodsorrel (Pt 2 of 2)
SurvivalPlantsMemory
 
   
 
About

Published on Jul 9, 2012

NOTE: The mnemonic of another plant (Stellaria media | Chickweed) in this course is based on the "4 essentials of survival ". The mnemonic of this plant is based on the "Rule of 3s". In any extreme situation you can't survive for more than 3 minutes without air, 3 hours without shelter, 3 days without water and 3 weeks without food. Now, assuming you're on land (looking at plants; not in a water survival situation), air in this mnemonic, will represent weather not oxygen.

MNEMONIC EXPLAINED: You love, love, love (3 heart-shaped leaflets) this plant and it loves, loves, loves (3 heart-shaped leaflets) you. It first reminds you of the "Rule of 3s". It then provides those 4 things necessary for survival: perfect weather/air (yellow star-shaped flowers represent clear weather; sunny skies and starry nights; not a cloud in the sky), a tarp shelter (each leaflet represents a tarp and the fold down the middle [it folds at night; at bedtime] represents your ridge line tied between 2 trees), water (the erect seed pod capsules [they bend sharply upward on their stalks], on the plant, represent water bottles with pull spouts on top [a short point]. The bottles/seed pods are erect and have pull spouts so that all of the water won't spill out) and food (the entire plant [above ground] is edible).

 
     

 

slideshow

     

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Other Videos

 
  Stijve klaverzuring Oxalis stricta 19 juli 2010.wmv
laverzuring Oxalis stricta 19 juli 2010.wmv Wim Derks Wim Derks
 
   
 
About

Uploaded on Jul 19, 2010

Oorspronkelijk uit Amerika afkomstig, nu overal ingeburgerd als onkruid op akkers en in tuinen, maar ook wel eens in het bos, zoals hier in Oranjewoud waar ik hem al jaren zie staan.

 
     
  Yellow Woodsorrel (Oxalis Stricta) Seeds Exploding in Slow Motion
RolandJuno
 
   
 
About

Published on Sep 16, 2012

Yellow woodsorrel (oxalis stricta) seed pods that are mature will "fire" their seeds when touched. These weeds are effective at dispersing seeds up to 13 feet away.

Shot with a Casio Exilim EX FC-100 at 240FPS. Audio from "Operation Cue" for 1964 from http://archive.org/details/Operatio1964

 
     
  Yellow Woodsorrel (Oxalis stricta) Popping it's Seeds
Simon Snow
 
   
 
About

Published on Jul 14, 2013

I recently identified my yellow woodsorrel and therefore discovered they they pop and scatter their seeds like members of the impatiens family of plants. I then decided that I must have a slow motion video of it happening.

This is my first attempt.

 
     
  Day Hike ( part 2 ) Yellow Wood Sorrel
MiWilderness
 
   
 
About

Uploaded on Jul 28, 2010

This plant is perfectly edible, but it does contain oxalic acid which can cause problems if consumed in large quantities. I use it as a trail nibble. It tastes real good and is tart like lemons. The tartness is a good sign that the plant may contain oxalic acid.

 
     

 

Camcorder

         

Visitor Sightings

   
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Crystal Boyd
6/2/2013

Location: Pine Bend Bluffs SNA


     
     
 

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