En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Taxonomic question about Viola missouriensis and Viola affinis.

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 
See a list of all Smarty Plants questions
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.

Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Monday - March 28, 2011

From: Round Rock, TX
Region: Southwest
Topic: Plant Identification
Title: Taxonomic question about Viola missouriensis and Viola affinis.
Answered by: Joe Marcus and Nan Hampton

QUESTION:

I have tentatively identified a violet as either Viola affinis or V. missouriensis. However, the pages for those species are dated 2007 and 2009, respectively, in the NPIN, while it reads that V. missouriensis has been subsumed under V. affinis and is no longer considered a separate species. The Missouri Violet page says it's synonymous with V. sororia var. missouriensis, so I guess that is a possible plant ID as well. What's the most current classification? I'd like to be accurate instead of confused. Thanks!

ANSWER:

The taxonomy of the genus Viola has been in flux for some time.
 
The entire paragraph on the Viola affinis (Sand violet) page in NPIN (Native Plant Information Network) about it being subsumed by V. missouriensis was an error.  It has been removed.  When we did the research on that page, we clearly entered information dealing with another taxon.  The lists of synonyms and range were also erroneous and have now been corrected.
 
The NPIN record for Viola missouriensis (Missouri violet) was for the most part correct, but some of the states in its known range were not listed.  Those errors have also been corrected.
 
The taxonomic authority for USDA Plants Database (and the Lady Bird Johnson Wildflower Center) is The Synthesis of North American Flora, the database of the Biota of North America Project (BONAP).  It is my understanding that ARS-GRIN (Agricultural Research Service-Germplasm Resources Information Network) and ITIS (Integrated Taxonomic Information System) use a variety of taxonomic references.
 
Now to what’s what.  Both USDA Plants Database and The Flora of North America recognize Viola missouriensis as an accepted name.  ITIS lists it as a synonym of Viola affinis (the accepted name according to ITIS).  ARS-GRIN has it as a synonym of V. sororia var. missouriensis.
 
On the other hand, ARS-GRIN lists Viola affinis as a synonym of V. sororia var. affinis.  As previously mentioned, ITIS considers A. affinis an accepted name.  USDA Plants also has it as a good name but The Flora of North America project does not yet address that taxon (It’s a work in progress).
 
Who to believe?  The simple answer is, believe us.  However, the correct name for any species is the most recent validly published name for that taxon.  The question of validity sometimes takes a few years to sort out.  Our authority, The Synthesis of North American Flora, takes a conservative approach to name changes to allow the scientific community time to evaluate and comment on new combinations and revisions to the scientific record.  We think that’s a wise approach.

Thank you for pointing out the inconsistencies for these species in our Native Plant Database so that we could correct them.  Our goal is for the information we provide to be as accurate as possible.

 

More Plant Identification Questions

ID of plant that looks like a pine cone?
October 29, 2009 - I have a plant that i was told it was a Pine Cone plant. When it blooms it looks just like a pine cone. but i can't fine anything on it.
view the full question and answer

Is the Ashe juniper native from Round Mountain TX
June 23, 2010 - Some friends and I disagree on something, and I hope you will settle the argument. Are the cedars found in the Texas hill country (ashe juniper) native or not?
view the full question and answer

Identity of vine growing in Kentucky.
August 11, 2013 - I have a vine I can't identify. The leaf is heart shaped and the vine is fuzzy. The blooms is just now starting to bloom. They are small red and some white in it. The bloom sort of remind you of a c...
view the full question and answer

Identifying tiny plant from Philadelphia PA
August 07, 2011 - I would like help identifying a tiny plant. I tried using using the plant identification page, but I don't know enough about this plant and plant terminology to use it. I would like to send you som...
view the full question and answer

Identification of a Globe Mallow
March 14, 2008 - Mr. SP, Two or three years ago I purchased a mallow at the Wildflower Center that (I was told) had not yet been identified. I have looked at your pictures of Sphaeralcea hastulata which has the same ...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center