En EspaŅol

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

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

Sunday - February 05, 2006

From: New Braunfels, TX
Region: Southwest
Topic: Trees
Title: Differentiating between red oak, Shumard oak and American sycamore
Answered by: Nan Hampton

QUESTION:

I have a few trees growing in an arroyo and I'm pretty certain that they are either red oak, shumard red oak, or Texas sycamore. The trees are deciduous and have a scaled grey bark which becomes lighter and patchy as one looks up the tree. I have read that both red oak and sycamores do this. Is there a way to identify them by looking at the bark?

ANSWER:

There shouldn't be any confusion between American sycamore, (Platanus occidentalis) and the two oaks. Both the oaks generally have deep vertical ridges on them. The sycamore's older bark is thinner and is not ridged as deeply as the oaks. The sycamore's younger bark is without ridges and often has green, tan and white patches. Also, if your trees are mature sycamores, you should see some of the fruits on the ground or still hanging on the tree. Robert Vines in Trees of Central Texas gives this description of the barks of the three trees:

1. Sycamore (Platanus occidentalis) bark: 'Reddish brown, scaling off in thin plates to expose the conspicuous white, or greenish, new bark."
2. Shumard oak (Quercus shumardii) bark: "Grey to reddish brown, smooth or broken into small tight interlacing ridges.
3. Texas oak (Q. texana) bark: "Dark grey to black with thick short ridges and platelike scales, fissures deep."

You are likely to have a bigger problem distinguishing between the Shumard oak (Quercus shumardii) and the Texas oak (Q. texana, synonym=Q. buckleyi)—also known as Red oak, Spanish oak, or Nuttall oak—by the bark alone; or, for that matter, even after they leaf out and produce acorns. Indeed, Robert Vines (Trees, Shrubs and Woody Vines of the Southwest. 1960. Austin: University of Texas Press) says that "The close relationship of Texas Oak and Shumard Oak has been a botanical classification problem. Some botanists prefer to classify the two as separate species, but others prefer to reduce Texas Oak to a varietal of Shumard Oak and give it the name of Q. shumardii var. texana (Buckl.) Ashe."
 

More Trees Questions

Cypress trees near pool in Winter Park FL
August 17, 2012 - I live in Winter Park (Orlando) Florida. I have been gifted two potted cypress trees that I need to get into the ground. The only place I can plant them is in my backyard in between a stand of non-inv...
view the full question and answer

Distance from existing structures to plant a tree in New York
March 05, 2009 - I would like to plant a large maple or birch near my suburban home. How far away from my home, garage, or any buildings should the seed be planted?
view the full question and answer

Looking for a plant to use as a windbreak for a small orchard in Pineville LA.
February 28, 2011 - We are looking for a good plant to use as a wind break for our small fruit orchard.
view the full question and answer

Cottonwood seed clogging air conditioner in Austin
June 06, 2010 - My husband and I recently moved into a rental house that has a very tall cottonwood tree in the backyard. It has been shedding its seeds all over our yard since the beginning of May and seems to still...
view the full question and answer

Transplanting Colorado blue spruce in Indiana
August 16, 2005 - I live in Indiana. I have a Colorado blue spruce that I would like to transplant to a different part of my yard. What is the best time of year to transplant it? It is only about two foot tall.
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