Native Plants
![](../_images/smarty_plants.gif)
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
![](../_images/mr_smarty_plants_logo_web_200w.jpg)
rate this answer
![](../_images/star_00.gif)
Thursday - September 06, 2012
From: Beaumont, TX
Region: Southwest
Topic: Plant Identification
Title: Visual difference between Strophostyles umbellata and S. helvola
Answered by: Nan Hampton
QUESTION:
I know that Strophostyles umbellata is perennial and S. helvola is an annual, but can you tell me how to visibly distinquish between S. umbellata and S. helvola.ANSWER:
You are right that Strophostyles umbellata (Pink fuzzybean) is a perennial and Strophostyles helvola (Amberique-bean) is an annual. Here are the differences that separate the two according to Correll and Johnston's Manual of the Vascular Plants of Texas:
"Bracts at base of individual flowers blunt, half as long as the calyx tube or less; leaflets without conspicuous lobes at base, 3 to 8 times as long as wide.....S. umbellata.
Bracts at base of individual flowers acute, as long as the calyx tube or longer; leaflets lobed at base or (if not lobed) the leaflets 1 to 3 times as long as wide......S. helvola.
Here are more photos and information, including the botanical descriptions, from Missouri Plants for S. umbellata and S. helvola . Note that the description on the Missouri Plants page for S. umbellata says that there are three species of Strophostyles [Strophostyles leiosperma (Slickseed fuzzybean), as well as S. umbellata and S. helvola] in Missouri and that the best way to distinguish between the three is by noting the differences in the bracts.
From the Image Gallery
More Plant Identification Questions
Identity of tall plant with blooms similar to squash in Ohio
September 05, 2012 - Trying to identify a mystery plant. Have found nothing similar on the internet. Can I send a picture and if so, how? The plant is over 5 feet tall with many branches and has blooms similar to squas...
view the full question and answer
Identification of tree bought from a magazine ad
August 11, 2013 - I recently submitted the following question to Ask An Expert. They were unable to identify the plant. I hope you will be able to.
Can you help me by either identifying this plant or advising me a...
view the full question and answer
Observation of Kalmia angustifolia in George Washington National Forest in Virginia
March 19, 2015 - On Feb. 7th, 2015 I observed a variety Kalmia on the crest of a ridge, recently burned off, in the George Washington National Forest. I think it may be sheep laurel (Kalmia angustiflora), which coloni...
view the full question and answer
Tree that looks like cedar elm but with smooth bark
August 09, 2014 - What tree looks like a cedar elm, but has smooth bark?
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
Support the Wildflower Center by Donating Online or Becoming a Member today. |