Selaginella rupestris, the northern selaginella[3] sometimes locally known as ledge spike-moss or rock spike-moss, is a species of spike-moss occurring in dry rocky places in eastern North America, including one locality in Greenland.

It has a wide but sporadic range.

In the absence of water, it rolls into a ball for which, it is also known as bird nest moss.

It is listed as imperiled and threatened in the State of Indiana.

[4] This lycophyte-related article is a stub.