Your help is appreciated.    We depend on donations to help keep this site free and up to date for you. Can you please help us?

Huperziaceae

This family contains exactly one genus, Huperzia.

See list of 3 species in this genus
  • 1a. Trophophylls dimorphic, those in the apical portion of the shoot noticeably shorter and more ascending than those near the base [Fig. 1]; gemmiphores borne throughout the apical portion of plant; lateral leaves of gemmae 0.5–1.1 (–1.2) mm wide, narrow-acute to acute at the apex; shoots determinate, the entire stem turning yellow on senescence
  • 1b. Trophophylls nearly monomorphic, those near the apex neither conspicuously smaller nor more ascending than those near the base; gemmiphores borne in a single whorl at the apex of a season’s growth; lateral leaves of gemmae 1.3–2.5 mm wide, obtuse to rounded at apex; shoots indeterminate, the base eventually turning yellow and rotting away
    • 2a. Trophophylls obovate, definitely widest beyond the middle, with 1–8 evident 
teeth [Fig. 2], lacking stomates on the adaxial surface; shoots with evident winter 
bud constrictions
    • 2b. Trophophylls lanceolate to narrow-triangular, widest below the middle, entire or rarely with obscure, papilla-like teeth, with abundant stomates on the adaxial surface (i.e., 30–90 per ½ leaf surface); shoots with obscure winter bud constrictions

Show All Couplets

 Show photos of:   Each photo represents one species in this genus.