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

Friday - November 18, 2011

From: Elmendorf, TX
Region: Southwest
Topic: General Botany, Plant Identification, Shrubs, Trees
Title: Difference between Styrax platanifolius and Styrax patanifolius ssp. texanus
Answered by: Nan Hampton

QUESTION:

What is the difference between a Styrax platanifolius and a Styrax platanifolius texanus?

ANSWER:

The botanical description of Styrax platanifolius (Sycamoreleaf snowbell) and its four subspecies—Styrax platanifolius ssp. platanifolius (Sycamoreleaf snowbell), Styrax platanifolius ssp. stellatus (Hairy sycamore-leaf snow-bell), Styrax platanifolius ssp. texanus (Texas snow-bell) and Styrax platanifolius ssp. youngiae can be found in the online version of Flora of North America at eFloras.org

The major difference appears to be in the abaxial surface (i.e., underside) of the leaves of Styrax platanifolius ssp. platanifolius which are described thusly:

"...abaxial surface with white stellate-tomentose pubescence in addition to scattered, orange-brown or dark-brown, stalked stellate hairs on some leaves, surface completely covered and obscured by pubescence..."

("Stellate-tomentose" means covered with a soft, tangled mat of short star-shaped hairs.)

The adxial (upper) surface is described as being glabrous (without hairs).  Also, the leaf margins are described as "often weakly undulate."

The leaf pedicels are described as being white stellate-tomentose and the flower calyces are "thinly and evenly white stellate-tomentose, margins and teeth densely glandular..."

You can read more about the differences between Styrax platanifolius and its subspecies at the eFloras site.

If you click on Texas on the USDA Plants Database distribution map for each subspecies of Styrax platanifolius, you can see where it occurs in the state.

 

 

From the Image Gallery


Sycamoreleaf snowbell
Styrax platanifolius

Sycamoreleaf snowbell
Styrax platanifolius ssp. platanifolius

Hairy sycamore-leaf snow-bell
Styrax platanifolius ssp. stellatus

Texas snow-bell
Styrax platanifolius ssp. texanus

More Shrubs Questions

Canadian Marine West Coast Plants
December 15, 2011 - What type of plants are found in the Canadian marine west coast climate?
view the full question and answer

Montana native plants to create a garden with edible plants
January 14, 2013 - Hi Smarty Plants We are looking to create a native herb, vegetable, root, fruit, flower and ground cover garden for the area of Hot Springs, Sanders County, Montana. Our zone is 4 and soil is mostly ...
view the full question and answer

Container plants for Yakima WA
May 11, 2013 - My condo complex has purchased large, pottery pots for around our pool. I need to choose low maintenance plants. hopefully something that takes limited water, etc.
view the full question and answer

Carolina allspice (Calycanthus floridus) in Jasper TX
October 27, 2011 - Carolina allspice (calycanthus floridus) grows in my yard in East Texas. It is native to the eastern U.S., but I notice there is a variety whose distribution extends through Louisiana. Since I live in...
view the full question and answer

Planting native blueberry bushes in Tennessee
July 07, 2008 - I have long wished to have wild blueberry bushes at my home. They are native to mountainous regions of my state, but I don't know whether or not it is reasonable to expect to be able to grow them wh...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center