Liverworts (Marchantiophyta) are small, non-vascular plants with a fascinating lifecycle typical of the bryophytes, which include mosses and hornworts. Due to their small size and growth habit, these primitive beauties are often overlooked, but they’re actually quite common. I often find them growing in the “splash” zone of shady seeps and brooks, typically clinging to rock surfaces. There are two types of liverworts: thallose liverworts, whose scaly, flat surfaces branch out in a “Y” pattern; and leafy liverworts, which have overlapping, leaf-like scales arranged in at least two rows. The photo above is of snakeskin liverwort (Conocephalum salebrosum), a thallose liverwort I found growing in a seep along the Mon River Trail. As you might surmise, liverworts make dramatic show plants in terrariums, especially if you can get them to sprawl over a rock surface.