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 - December 28, 2007

From: Austin, TX
Region: Southwest
Topic: Trees
Title: Inflorescence of the American sycamore (Platanus occidentalis)
Answered by: Nan Hampton

QUESTION:

What kind of flower inflorescence do sycamores have?

ANSWER:

The flowers on Platanus occidentalis (American sycamore), unlike the familiar fruits, are small and inconspicuous. The trees are monoecious, i.e., both male and female flowers, although on different stalks, are together on the same tree. Here is a description of the flowers from the Alabama Forestry Service:

"FLOWERS: Appear on the growth of the season when the leaves are about l/4 developed,
monoecious, borne in capitate heads, staminate and pistillate flower heads on different
stalks; staminate are axillary and dark red; pistillate terminal, greenish, often tinged with
red."

You can see more photos of P. occidentalis, from Ontario Trees & Shrubs.
 

More Trees Questions

Is the fruit on Texas olive (Cordia boissieri) edible?
October 17, 2010 - I planted Cordia boissieri (Texas olive) in my garden and its thriving. Now I'm getting fruit from the tree; they are grape-sized waxy and soft. Is this fruit edible (by humans)? Should it be ...
view the full question and answer

Pruning of Bauhinia lunarioides
May 29, 2008 - I have a Bauhinia variegata..when is the best time to prune it? it tends to grow horizontally..where do you clip off the limbs?
view the full question and answer

Changing color of crape myrtle blooms
July 08, 2008 - I have 5 well established crape myrtle trees whose blooms are a very light lavender/pink color. I would like to know if there is any way to deepen or change the color of the blooms. I would prefer a m...
view the full question and answer

Small to medium drought-tolerant trees for Southern California
June 01, 2012 - I am looking for drought tolerant trees to line one side of our 70 foot driveway. We live in Southern California. Currently, we have queen palms, but I would like something more native or drought to...
view the full question and answer

Need a native tree for full sun in Hockley, TX
October 27, 2009 - What native trees should I plant for full sun. I am building on a 1/2 acre previously used as grazing land on the original Katy prairie. I need one large shade tree, a few smaller ornamentals, and a...
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