Huperzia appressa
Huperzia appressa growing on Åklinuten in Norway's Blefjell range at an elevation about 1,300 metres (4,300 ft)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Lycophytes
Class:	Lycopodiopsida
Order:	Lycopodiales
Family:	Lycopodiaceae
Genus:	Huperzia
Species:	H. appressa
Binomial name
Huperzia appressa (Desv.) Á. Löve & D. Löve
Synonyms
List Huperzia arctica (Tolm.) Sipliv. Huperzia selago subsp. arctica (Tolm.) Á.Löve & D.Löve Huperzia selago subsp. appressa (Bach.Pyl. ex Desv.) D.Löve Huperzia selago var. appressa (Bach.Pyl. ex Desv.) Ching Lycopodium appressum (Bach.Pyl. ex Desv.) Petrov Lycopodium selago subsp. appressum (Bach.Pyl. ex Desv.) Hultén Lycopodium selago f. appressum (Bach.Pyl. ex Desv.) Gelert Lycopodium selago var. appressum Bach.Pyl. ex Desv. Lycopodium selago subsp. arcticum Tolm. Urostachys selago var. appressus (Bach.Pyl. ex Desv.) Herter ex Nessel

Huperzia appressa, commonly known as Appalachian firmoss, is a non-flowering species of plant in the family Lycopodiaceae. It has been reported from the United States, Canada, China, Russia, and several European countries. It is a terrestrial plant up to 10 cm tall, with dichotomously branched stems.^[1][2]