Unlike most of the plants with which we're familiar, this is a nonvascular plant. One common name for this species is “Snakeskin liverwort,” and the reason should be apparent from the image. This is difficult to photograph because the plants are kept very wet in the greenhouse, so to reduce the glare and reflections from all light sources, this was a close-up to start with and highly cropped to capture the “snakeskin” pattern.
Retired economics professor (“dismal scientist”). Married 40+ years to the love of my life; we have two grown daughters, both married, two granddaughters and a...