red currant (<a href="https://en.wikipedia.org/wiki/Redcurrant" class="extiw" title="en:Redcurrant">ribes rubrum</a>) leaf veins
<a href="//commons.wikimedia.org/wiki/User:SimonWaldherr" title="User:SimonWaldherr">SimonWaldherr</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>