298 Proceedings of the Ohio State /Icademy of Science. 



1. Selaginella rupestris (L) Spring. Rock Selaginella. 



Low, evergreen, tufted plants with occasional sterile runners 

 and subpinnate branches, commonly curved when dry. Leaves 

 rigid, appressed-imbricated, linear or linear-lanceolate, convex 

 on the back, tipped with a distinct transparent point ; cones ses- 

 sile at the ends of the branches, strongly quadrangular. On 

 dry rocks and sandy ground. Licking, Fairfield, and Hocking 

 counties. 



2. Selaginella dpus (L.) Spring. Creeping Selaginella. 



Annual, light green, delicate plants with creeping, much- 

 branched flaccid stems, angled on the face. Leaves minute, 

 4-ranked, membranous, of two kinds, spreading into two planes; 

 cones obscurely quadrangular. In moist, shady places. Lake 

 and Trumbull counties. 



