Like much marshland (5)
I believe the answer is:
reedy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">like much marshland</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for reedy that I've seen before include "Like some of the wind" , "Long and thin" , "Like oboe's sound?" , "Like some pipes" , "Piping, fluting" .)