Sometimes considered a problem weed, liverwort (Marchantia) is a moss-like plant that thrives in moist environments and is one of the oldest plants in the world. There are around 9,000 liverwort ...

We’re talking bryophytes and seedless vascular plants, the categories that include mosses and ferns, liverworts, and more. So let’s get low— to the ground, that is. This is gonna be mossome.