Asplenium trichomanes-dentatum L.
  • Sp. Pl.

Cite taxon page as 'WFO (2020): Asplenium trichomanes-dentatum L. Published on the Internet; Accessed on: 01 Jun 2020'

General Information

Roots proliferous. Stems erect, unbranched; scales blackish throughout, linear, 0.9--1.1 × 0.2--0.3 mm, margins entire. Leaves dimorphic; sterile leaves short with small crowded pinnae; fertile leaves 9--20 cm with long, widely spaced pinnae. Petiole pale green except darkish proximally, dull, (1--)4--6(--10) cm, 1/5--1/2 length of blade; indument absent. Blade linear, 1-pinnate, 3--10(--15) × 1--2.5 cm, papery, slightly glandular; base not tapered; apex with elongate terminal pinna similar in size to subtending lateral pinnae, not rooting. Rachis green throughout, dull, glabrous. Pinnae in 5--8(--12) pairs, ovate, strongly asymmetric, lanceolate; medial pinnae 3--11 × (2--)4--6 mm; base acute; margins crenate-dentate; apex truncate. Veins free, somewhat evident. Sori (1--)2--5(--8), mostly on acroscopic side. Spores 64 per sporangium. 2 n = 108.

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