Explore Plants

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
    
 

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

Tuesday - July 23, 2013

From: Houston, TX
Region: Southwest
Topic: Poisonous Plants, Vines
Title: Is Bignonia capreolata (Crossvine) known to cause skin irritation
Answered by: Nan Hampton

QUESTION:

Is Crossvine (Bignonia capreolata L.) known to cause a rash? We are trying to identify the source of a rash-after-gardening, and have not seen any of the big three (poison ivy, poison oak, poison sumac). We do have some invasive vines growing in from a back alley, mostly morning glory. Some of the plants seem to be trumpet vine while some are similar in flower but have different leaves. The descriptions of cross vine seem closest so far to the vine in the locations of the work that preceded the rash.

ANSWER:

I could find no source that said Bignonia capreolata (Crossvine) caused dermatitis of any sort.  However, I did find several other vines that could be candidates.

The Botanical Dermatology Database (BoDD) says:

"A number of texts refer to dermatitis caused by handling the flowers or leaves of Campsis radicans ... but there appear to be no properly documented case reports."

The Samuel Roberts Noble Foundation also says that Campsis radicans causes dermatitis in some people.  They give one of its common names as "cow-itch vine". DermatologistsBlog.com also says that Campsis radicans can cause rash in some people.

The tubers can cause dermatitis in some people according to Xeriscape-Today.  

The BoDD gives information for several Cissus sp. that say they can cause dermatitis, but Cissus triofoliata is not mentioned.

According to the Poison Ivy, Oak, & Sumac Information Center, Cissus trifoliata can cause dermatitis in some people.

You can find more about people who are allergic to Cissus trifoliata on the blog Window on a Texas Wildscape.

University of California's Safe and Poisonous Garden Plants lists Gelsemium sempervirens with two toxicity classes:

1.  Major Toxicity: These plants may cause serious illness or death.

4.  Dermatitis: The juice, sap, or thorns of these plants may cause a skin rash or irritation.

 

From the Image Gallery


Trumpet creeper
Campsis radicans

Trumpet creeper
Campsis radicans

Trumpet creeper
Campsis radicans

Carolina jessamine
Gelsemium sempervirens

Carolina jessamine
Gelsemium sempervirens

More Vines Questions

Vine for Patio Wall in D.C.
June 03, 2013 - I have a concrete patio wall 4 feet tall and 9 feet long in Washington, D.C. The wall runs east to west and there is a patio above it. I am looking for vines to cover it so that I would not have to lo...
view the full question and answer

Flowers for monarch butterflies in Bastrop, Gonzales and Travis Counties of Texas
March 05, 2013 - Hi Mr./s. Smarty Plants, What are some flowers that grow naturally on a Bastrop, Travis, or Gonzales county riverside that monarch butterflies commonly feed on? Thank you
view the full question and answer

Identity of a thorny vine in Florida
June 02, 2009 - Area: panhandle of FL Problem: thorny vine with large potato like roots, rapid growing and very invasive. grows in summer time. thanks
view the full question and answer

Identification of vine from Las Vegas NV
July 11, 2012 - I'm interested in identifying the vine shown by the leaf in this photo: https://picasaweb.google.com/lh/photo/zR3R4JSPYcCI4ESczNXWM4h8z33Cq5cyZNqSSYf9hx0?feat=directlink My mother-in-law got one o...
view the full question and answer

Identification of large egg-like objects on vines in Texas
April 17, 2010 - This past weekend we were at our deer lease in Hext,TX. My children and I went exploring along the banks of the San Saba river and found what we originally thought were some type of turtle or turkey e...
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.