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2 Leaf margins fringed with paired disclike scales; soral involucres 5-15 per leaf; leaf blades 2 cells thick between the veins | |
2 Leaf margins fringed with dark stellate hairs; soral involucres 1-6 per leaf; leaf blades 1 cell thick between the veins. | |
3 Midvein extending to the apex of the leaf blade; involucral lips not distinct from the blade in color; leaves usually < 1 cm long; soral involucres usually 1 per leaf; [widespread in our area] | |
3 Midvein absent or not extending past the midpoint of the leaf blade; involucral lips dark-margined; soral involucres 1-6 per leaf; [of FL peninsula]. | |