Urostachys serratus (Thunb.) Herter ex Nessel = Huperzia serrata (Thunb.) Trevis.
English:
serratus,-a,-um;

https://archive.org/stream/#page/56/mode/2up
homotypic synonyms:
Huperzia serrata (Thunb.) Rothm.; Huperzia serrata (Thunb.) Trevis.; Lycopodium serratum Thunb.; Urostachys serratus (Thunb.) Herter;

protologue: Die Barlappgewachse (Lycopodiaceae) 56: 56 (1939)

---

      search images: Google images       IPNI (International Plant Names Index)       WFO (World Flora Online)       POWO (Plants of the World online)       GBIF (Global Biodiversity Information Facility)

---