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

Short to Medium Height Grasses for Iowa
January 20, 2011 - What short to medium height native grass can be planted in late fall at the same time I sow my wildflower seed?
view the full question and answer

Post freeze care for Texas native grasses
January 05, 2008 - Can you tell me the best post-freeze care for Tx native grasses in my garden: lindheimer muhly, gulf muhly, inland sea oats. Mexican feather grass. Do I cut them back? Burn them? Leave them alone? T...
view the full question and answer

Tufted hairgrass seed for Houston TX
August 06, 2009 - From Houston-Texas I am looking for a seed grass called tufted hairgrass ( deschampsia caespitosa ), if you can tell me where to find this kind of seed. Thank you for helping.
view the full question and answer

Care of buffalo grass after wet season
August 15, 2007 - I'm asking for your advice on what to do with my buffalo grass lawn. With all this rain, I've managed to pull the weeds as they pop up in my front yard, and it looks good, except for a couple of...
view the full question and answer

Suggestions for Texas native plants for memorial
June 30, 2005 - A dear friend of ours has passed and we would like some ideas of a native Texas plant we could plant in memory of her. It will be grown in the hill region near Houston. Thank you.
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
© 2014 Lady Bird Johnson Wildflower Center