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

Monday - May 21, 2007

From: Victor, ID
Region: Rocky Mountain
Topic: Grasses or Grass-like
Title: Difference between Pseudoroegneria spicata and Elymus trachycaulus
Answered by: Joe Marcus

QUESTION:

What is the difference between Pseudoroegneria spicata and Elymus trachycaulus.

ANSWER:

The differences are minor. The species of the genus Pseudoroegneria have been included in Elymus by some authorities. The most distinguishable morphological difference is in the awns of the lemmas of the two species. The awns of Pseudoroegneria spicata are typically sharply reflexed and diverge from the culm giving the plant a rather unkempt appearance, while the awns of Elymus trachycaulus - if present - are usually straight and are held more-or-less parallel to the culm. The Grass Manual on the Web is an excellent resource for more information on these and other North American grasses.
 

More Grasses or Grass-like Questions

Water eroding corner in Austin
October 25, 2011 - I live close to the Wildflower Center. My yard slopes - as do my neighbors' yards to one corner in my yard. The result is constant moisture in one corner. The rest of the yard is caliche, rocks (m...
view the full question and answer

Native grasses for organic farm in Elgin TX
July 22, 2014 - Hi there, I am working to restore native grasses on our certified organic farm in Elgin, TX. We raise eggs, grass fed beef, and grass fed lamb. I am having a terrible time finding organic pastur...
view the full question and answer

Buffalograss (Bouteloua dactyloides) for Ontario, Canada
June 17, 2009 - Is there a grower/distributor of Buffalo Grass in Canada? I want to seed it soon. Thanks
view the full question and answer

Non-native zoysia and bermuda grasses in Austin
July 11, 2013 - We have Bermuda grass in the front and Zoysia in the back yards. The back grass is fine but the front yard Bermuda isn't. We have watered once each week during the spring and during the past 3 weeks...
view the full question and answer

Fast-growing ground cover for creekside
May 18, 2014 - Hi Mr. Smarty Plants. I live in Austin Texas and am looking for an aggressively spreading ground cover or grass to plant along a small creek on the back of my property in order to help with soil er...
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