Flora of New York/Clade Lycophytes

Class Lycopodiopsida contains the lycophytes (clubmosses, firmosses and quillworts).[1][2]
tracheophytes
lycophytes
Lycopodiales : Lycopodiaceae
Lycopodielloideae

Lycopodiella spp. (5 bog cubmosses)

Pseudolycopodiella caroliniana (slender bog clubmoss)

Lycopodioideae

Dendrolycopodium spp. (3 tree cubmosses)

Diphasiastrum spp. (8 ground cedars)

Spinulum spp. (3 bristly clubmosses)

Lycopodium spp. (2 running clubmosses)

Huperzioideae

Huperzia spp. (4 firmosses)

Isoetales : Isoetaceae

Isoetes spp. (8 quillworts)

Selaginellales : Selaginellaceae

Selaginella spp. (3 spikemosses)

euphyllophytes

Polypodiopsida (ferns)

spermatophytes (seed plants)