Compilation
Lygodium japonicum

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Name

Identification
Lygodium japonicum Sw. [family LYGODIACEAE ] (stored under name); Verified by Burrows, J.E.,
Related name
  • Lygodium dissectum
  • Adiantum japonicum
  • Lygodium microstachyum
  • Ophioglossum japonicum
  • Lygodium japonicum
Common name
  • Japanese climbing fern, Flora of North America Vol. 2

Flora

Entry for Lygodium japonicum (Thunberg ex Murray) Swartz [family SCHIZAEACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 2,
Names
Lygodium japonicum (Thunberg ex Murray) Swartz [family SCHIZAEACEAE], J. Bot. (Schrader), 1800(2): 106. 1801
Ophioglossum japonicum Thunberg ex Murray [family OPHIOGLOSSACEAE], Syst. Veg. ed., 14, 926. May-June 1784
Treatment Author(s)
Clifton E. Nauman
Information
Stems creeping. Leaves to ca. 3(-30) m. Petioles borne 2-7 mm apart, 10-35 cm. Sterile pinnae on 1.5-3.5 cm stalks, triangular to lanceolate, 2-3-pinnate, 6-15 × 5.5-15 cm; ultimate segments lanceolate, lobed or divided proximally; lobes usually acute at tip and directed toward apex; segment apices long-attenuate to acute; segments not articulate to petiolules, not leaving wiry stalks when detached; blade tissue pubescent abaxially with short, curved hairs. Fertile pinnae on 1-2 cm stalks, lanceolate-triangular, 2-3-pinnate, 5-18 × 4-14 cm; ultimate segments ovate to lanceolate, fringed with fertile lobes, otherwise similiar to sterile segments.
Discussion
Lygodium japonicum is native to eastern Asia. It is commonly naturalized or escaped from cultivation. It has been reported as weedy in southern Alabama and Florida where its dense canopy can eliminate underlying vegetation.

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