using value of enum in g:select when enum is attribute of selection object

Example:

batchTag is an enumerated type attribute of a batchRange, with values like so:

JAN1 "January Biweekly 1",
JAN2 "January Biweekly 2",

etc.

I want to display the VALUE of the batchTag in the select, IOW, the select should contain

"January Biweekly 1"
"January Biweekly 2" ...

not

JAN1
JAN2
FEB1
FEB2
FEB3 ...

I have tried several things in the g:select to do this, but without any success. I thought perhaps "it" would be available as part of the g:select (as it is clearly an iteration) and tried to reference it.batchTag.name for the optionValue, but that did not work. Any suggestions?

Thank you!