+2  A: 
<g:render template="/sample/mytemplate" />

should do it.

Jean Barmash
I'm sorry, but I wasn't clear enough in my question. I wanted to know if there was a way to do it with the tmpl syntax.Similar to<tmpl:mytemplate ...>Except that I don't know what syntax to use for the directory.
Andrew
Grails does not currently have a syntax to use the <tmpl:template ...> namespace, you have to use render instead.
Blacktiger
Thanks for the info.
Andrew