Asplenium serratum

Linnaeus

Sp. Pl. 2: 1079. 1753.

Common names: New World bird's-nest fern American bird's-nest fern
Illustrated
Treatment appears in FNA Volume 2.

Roots proliferous. Stems erect, unbranched; scales brown throughout, narrowly lanceolate, 5–10 × 1–1.5 mm, margins entire. Leaves monomorphic. Petiole vestigial. Blade linear, oblanceolate, simple, (10–) 20–40 (–70) × 3–8 cm, thick, glabrous; base gradually tapered; margins entire to irregularly crenate; apex attenuate, not rooting. Rachis green throughout, dull, glabrous. Veins numerous, free, mostly immersed. Sori parallel to each other, nearly perpendicular to midrib. Spores 64 per sporangium. 2n = 144.


Habitat: Rotten logs and stumps
Elevation: 0–50 m

Discussion

Asplenium serratum is found rarely in southern peninsular Florida, where it is at the extreme edge of its tropical American range. This large simple-leaved spleenwort is called "American bird's-nest fern" because of its superficial resemblance to the Old World A. nidus Linnaeus, which is regularly grown in temperate conservatories. Asplenium serratum is unusual in having roots with abundant, matted hairs rather than scattered hairs as found in other species.

Selected References

None.

Lower Taxa

None.
... more about "Asplenium serratum"
not rooting +
Warren H. Wagner Jr. +, Robbin C. Moran +  and Charles R. Werth +
Linnaeus +
tapered +
40 cm400 mm <br />0.4 m <br /> (70 cm700 mm <br />0.7 m <br />) +
20 cm200 mm <br />0.2 m <br /> (40 cm400 mm <br />0.4 m <br />) +
oblanceolate +
thick;3cm;8cm +
New World bird's-nest fern +  and American bird's-nest fern +
0–50 m +
Rotten logs and stumps +
monomorphic +
fertile +  and than sterile ones +
entire +  and irregularly crenate +
perpendicular +
perforate +, reticulate +, spiny +  and winged +
not articulate +
c--shaped +
proliferous +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
lanceolate +
1mm;1.5mm +
less lunate;linear +
Illustrated +
dorsiventral +  and symmetric +
Asplenium serratum +
Asplenium +
species +
anastomosing +