Asplenium abscissum

Willdenow

Sp. Pl. 5(1): 321. 1810.

Common names: Abscised spleenwort
Treatment appears in FNA Volume 2.

Roots proliferous. Stems erect, unbranched; scales brown throughout, linear-deltate, 1.2 × 0.1–0.3 mm, margins entire. Leaves monomorphic. Petiole green throughout, dull, 3–15 (–20) cm, 1/3–2/3 length of blade; indument absent. Blade deltate, 1-pinnate, 7–12 (–20) × 3–6 (–9) cm, thick, papery, glabrous; base not tapered; apex attenuate, not rooting. Rachis green throughout, dull, glabrous. Pinnae in 4–8 pairs, linear-lanceolate; medial pinnae 30–70 × 7–15 mm, slightly curved, strongly excavated in proximal basiscopic 1/3; base with small acroscopic auricle; margins entire to dentate; apex attenuate. Veins free, obscure. Sori 2–9 pairs, medial, commonly 1–2 less on basiscopic side than on acroscopic side. Spores 64 per sporangium. 2n = 72.


Habitat: Shaded limestone boulders, cliff ledges, grottoes, sinkholes
Elevation: 0–50 m

Distribution

V2 362-distribution-map.gif

Fla., Mexico, West Indies in the Antilles, Central America, South America to Bolivia and Brazil

Discussion

Asplenium abscissum hybridizes with A. verecundum to produce the triploid hybrid, A. × curtissii.

Selected References

None.

Lower Taxa

None.
... more about "Asplenium abscissum"
not rooting +
Warren H. Wagner Jr. +, Robbin C. Moran +  and Charles R. Werth +
Willdenow +
not tapered +
simple +  and 4-pinnate +
12 cm120 mm <br />0.12 m <br /> (20 cm200 mm <br />0.2 m <br />) +
6 cm60 mm <br />0.06 m <br /> (9 cm90 mm <br />0.09 m <br />) +
7 cm70 mm <br />0.07 m <br /> (12 cm120 mm <br />0.12 m <br />) +
deltate +
thick;3cm;6cm +
Abscised spleenwort +
Fla. +, Mexico +, West Indies in the Antilles +, Central America +  and South America to Bolivia and Brazil +
0–50 m +
Shaded limestone boulders, cliff ledges, grottoes, sinkholes +
monomorphic +
fertile +  and than sterile ones +
entire +  and dentate +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
perforate +, reticulate +, spiny +  and winged +
not articulate +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
1/3 length of blade;2/3 length of blade +
c--shaped +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
proliferous +
1.2 cm12 mm <br />0.012 m <br /> (?) +
linear-deltate +
0.1mm;0.3mm +
less lunate;linear +
dorsiventral +  and symmetric +
Asplenium abscissum +
Asplenium +
species +
anastomosing +