En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Difference between <i>Styrax platanifolius</i> and <i>Styrax patanifolius</i> ssp. <i>texanus</i>

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 Plant Identification Questions

Smarty Plants on Hesperaloe parviflora
August 22, 2005 - On your home website there is an orange flower that is tall and has tall leaves. is it a cactus? Thanks.
view the full question and answer

Identity of and how to get rid of plant in planter in Indiana
May 17, 2013 - We moved to Mooresville Ind. (Brooklyn area) 3 yrs ago. In one of the 12x12 planters out back, these one THINGS keep cutting back and spreading everywhere. They are tall, hollow stem, seems like ther...
view the full question and answer

Plant identification
July 15, 2010 - I bought a double knock-out rose bush and planted it in my yard. A year later a weed-like plant started growing beside it. It has very thorny leaves, stems and stalk. Little purple flowers are grow...
view the full question and answer

Plant identification, possibly Datura
September 07, 2007 - I have a wide green-leafed plant that has white flowers. This plant also has some thorny fruits in the shape of mines that float on the ocean. At the moment it is 2 feet high. I'm beginning to wo...
view the full question and answer

Mystery shrub in Michigan
July 18, 2011 - I live in the upper peninsula of Michigan and noticed a shrub in the woods that has large clusters of small red, what I would call berries on it. Can you give me some n...
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