Difference between revisions of "Asplenium resiliens"
Linnaea 18: 331. 1844.
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|genus=Asplenium | |genus=Asplenium | ||
|species=Asplenium resiliens | |species=Asplenium resiliens |
Revision as of 21:50, 16 December 2019
Roots not proliferous. Stems erect, unbranched; scales black throughout, linear-lanceolate, 4–5 × 0.2–0.6 mm, margins entire. Leaves monomorphic. Petiole black throughout, lustrous, 1.5–3(–5) cm, 1/4–1/10 length of blade; indument of blackish brown, filiform scales. Blade linear to narrowly oblanceolate, 1-pinnate throughout, 9–20(–30) × 1–2(–2.5) cm, thick, glabrous; base gradually tapered; apex acute, not rooting. Rachis black throughout, lustrous, glabrous. Pinnae in 20–40 pairs, oblong; medial pinnae (5–)10–20 × (2–)3–5 mm; base usually with an acroscopic auricle; margins ± entire to shallowly crenate; apex obtuse. Veins free, obscure. Sori 2–5 pairs per pinna, on both basiscopic and acroscopic sides, often confluent with age. Spores 32 per sporangium. n = 2n = 108 (apogamous).
Habitat: Cliffs, sinkholes, on limestone or other basic rocks
Elevation: 100–1500 m
Distribution
![V2 468-distribution-map.gif](/w/images/e/ee/V2_468-distribution-map.gif)
Ala., Ariz., Ark., Del., Fla., Ga., Ill., Kans., Ky., La., Md., Miss., Mo., N.Mex., Nev., N.C., Okla., Pa., Tenn., Tex., Utah, Va., W.Va., Mexico, West Indies in Hispaniola, Jamaica, Central America in Guatemala, South America.
Discussion
Asplenium parvulum M. Martens & Galeotti is an older, but illegitimate, name because it is a later homonym of A. parvulum Hooker.
In Florida Asplenium resiliens hybridizes with A. heterochroum Kunze (4 x), producing A. × heteroresiliens (5 x).
Selected References
None.