Lycopodium obscurum Linnaeus, Species Plantarum 2: 1102. 1753.

"Habitat in Philadelphia." RCN: 7969.

Lectotype ( Øllgaard in Biol. Skr. 34: 59. 1989): Kalm, Herb. Linn. No. 1257.12 (LINN) .

Current name: Lycopodium obscurum L. ( Lycopodiaceae).