one way to explain it is the tree those skinny roots stabbing into volcanic rock the first thing to grow isn’t always pretty the limbs are barren sticks there are no flowers or fragrant music it is simply phloem and xylem emerging from the crust an igneous womb — Emerging From the Muck, “Restless Continent,” Aja Couchois Duncan ( @aja_couchois_duncan ), last stanza . . . phloem and xylem are the two types of transport tissue in vascular plants - the blood of wood