Biology is Key by Trees Are Key published on 2019-04-17T20:53:30Z As we wrap up the fourth season of #TreesAreKey (can you believe it’s been four years since we started this exploration?) I'm looking back at some of my favorite episodes and they have something in common. The commonality also happens to be one of the subjects that I love to teach for our Certified Arborist Prep Courses… Tree biology, in particular, applied tree biology. Species Spotlight Baldcypress Taxodium distichum is a deciduous Texas native tree. One of the few deciduous conifers of North America, baldcypress is a large tree to over 100 feet tall and a straight trunk to 8 feet in diameter, with numerous ascending branches. Young trees display a narrow, conical outline, but old trees have a swollen, fluted base, a slowly tapering trunk, and a broad, open, flat top. In swamps they develop distinctive woody growths from the root system called "knees."