En Español

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
Not Yet Rated

Wednesday - January 24, 2007

From: Portland, OR
Region: Northwest
Topic: General Botany, Trees
Title: Alleotrophic effects of caffeine found in Ilex species
Answered by: Joe Marcus

QUESTION:

I'm doing research for my biology class on the alleotrophic effects of caffeine. I'm planning to use Ilex vomitoria as the caffeine-producing plant. As the control I want to use another non-caffeine-producing holly, but I'm having trouble finding a source that states which hollies do or do not produce caffeine. Could you please help me?

ANSWER:

We do not know of any resource that specifically documents the caffeine content of various Ilex species. However, in designing your experiment, you will probably need to know not only what species contain caffeine, but which plant parts contain the compound and in what concentrations. So you will likely need to first measure the caffeine content of your test plants anyway. Moreover, you will need to determine by what mechanism your test plants impart their allelotrophic effects. This will also be important to know before you can study the allelotrophic effect of the test plants.

 

More Trees Questions

Obtaining bark of Larix laricina from Hyderabad India
January 26, 2012 - I am in need of Larix laricina (Bark) for my research work. Please let me know how to procure it.
view the full question and answer

Native wild plum trees for Johnson County, Texas
December 24, 2012 - What native wild plums will grow in southern Johnson County? And where can I find the trees locally? Thank you
view the full question and answer

Mediterranean Pines indigenous to Verde Valley AZ
January 01, 2012 - Are the tall, thin Mediterranean/Pencil Pines growing in the Verde Valley in Arizona indigenous to the area? They are so plentiful, but are not identified as an indigenous evergreen. If not, how did...
view the full question and answer

Soapberry Transplant shock symptoms
July 21, 2006 - Please suggest a cause & cure for general yellowing of the leaves of Western Soapberry when planted in the ground 20 miles NW of Austin (thin, poor clay over limestone). Trees still in containers are...
view the full question and answer

Evergreen ornamental tree choice in northern Indiana
June 10, 2009 - Can you please advise on growing Lemon Cypress trees outdoors in zones 5/6 zip code 46311
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center