undergreen

English

undergreen (uncountable)

(poetic) Greenery that is underneath.
- J. Russell Tayler, The Madness of Sir Tristram
  Yet we, that listened in the sighing wood, / With soiled gowns crouching in the undergreen, / Were not quite sure, until he said "Isoude!"
- 2009, Kenneth Irby, ‎Kyle Waugh, ‎Cyrus Console, The Intent On: Collected Poems, 1962-2006 (page 540)
  and in the cottonwoods not yet turned, the green and the undergreen whirl at the length of our petioles