Asplenium scolopendrium var. americanum (Fernald) Kartesz & Gandhi
  • Phytologia
  • American hart's-tongue

Cite taxon page as 'WFO (2020): Asplenium scolopendrium var. americanum (Fernald) Kartesz & Gandhi. Published on the Internet; Accessed on: 01 Jun 2020'

General Information

Roots not proliferous. Stems erect, unbranched; scales brown, lanceolate, 3--6 × 1--1.5 mm, margins entire. Leaves monomorphic. Petiole brown to straw-colored, dull, 3--10 cm, 1/8--1/4 length of blade; indument of brown, narrowly lanceolate scales. Blade linear, simple, 8--35 × 2--4.5 cm, thick, papery, nearly glabrous; base cordate; margins entire; apex acuminate, not rooting. Rachis brown proximally, straw-colored distally, dull, glabrous. Veins free, obscure. Sori numerous, perpendicular to rachis, or nearly so, usually restricted to distal 1/2 of blade. Spores 64 per sporangium. Usually 2 n = 144.

  • Provided by: [B].Flora of North America @
    • Source: [
    • 1
    • ]. 

    Other Local Names

    American hart's-tongue

     Information From

    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Flora of North America Association
    World Flora Online consortium
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).