Selaginella, subgenus Tetragonostachys Keys
While mostly when you see a moss like plant that is exactly what it is called: A MOSS! But not all moss looking plants are mosses!! The
most notable one about is Irish Moss, which is an Angiosperm or a flowering plant!
But if you have ever hiked about and seen some moss like plants growing on rocky hillsides in full sun then you just might be looking at a member of Selaginella of the subgroup (subgenus) called Tetragonostachys.
These are really great little plants. While it has been a while since I did extensive research on them I have not taken the opportunity until now to post up on the net some PDF field keys that I constructed for their identification. These keys are by state and are only for those states with a minimal; number of species.
If you are interested in using them check the link below to my thread on the Botany section that will link you to the keys.
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