Asplenium resiliens

Kunze

Linnaea 18: 331. 1844.

Common names: Black-stemmed spleenwort
Treatment appears in FNA Volume 2.

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

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.

Lower Taxa

None.
... more about "Asplenium resiliens"
not rooting +
Obtuse (?) +  and Acute (?) +
Warren H. Wagner Jr. +, Robbin C. Moran +  and Charles R. Werth +
tapered +
simple +  and 4-pinnate +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
9 cm90 mm <br />0.09 m <br /> (20 cm200 mm <br />0.2 m <br />) +
linear;narrowly oblanceolate +
thick;1cm;2cm +
Black-stemmed spleenwort +
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 +  and South America +
100–1500 m +
Cliffs, sinkholes, on limestone or other basic rocks +
monomorphic +
fertile +  and than sterile ones +
less entire +  and shallowly crenate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
perforate +, reticulate +, spiny +  and winged +
not articulate +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1/4 length of blade;1/10 length of blade +
c--shaped +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not proliferous +
blackish brown +  and black +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
filiform +  and linear-lanceolate +
0.2mm;0.6mm +
acroscopic +  and basiscopic +
less lunate;linear +
dorsiventral +  and symmetric +
Asplenium resiliens +
Asplenium +
species +
anastomosing +