Asplenium cristatum

Lamarck in Lamarck et al.

in Lamarck et al.,Encycl. 2: 310. 1786.

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

Roots proliferous. Stems erect, not branched; scales blackish throughout or rarely with narrow pale margins, narrowly linear, mostly only 8–12 cells wide proximally, 2–3 × 0.5–0.8 mm. Leaves monomorphic. Petiole blackish to greenish, dull, 1–7 (–17) cm, 1/5–1/2 length of blade; glabrous with few scales at base. Blade oblong-lanceolate, 2–3-pinnate, (2–) 6–12 (–18) × 2.7–10 cm, thin, glabrous; basal pinna pairs unreduced to reduced 1/4; apex gradually reduced, not rooting. Rachis blackish, dull, glabrous. Pinnae in (7–) 10–15 (–20) pairs, oblong, 2-pinnate throughout; medial pinnae (1–) 2–3 (–6) cm, all ± curved upward; proximal pinnae descending; base cuneate; apex attenuate. Pinnules ± asymmetric, 1–5 (–10) × 1–4 mm; margins strongly dentate, cut 1/3–1/2 to axis. Veins free, evident. Sori 1–4 (–6) per pinnule, usually on both basiscopic and acroscopic sides. Spores 64 per sporangium. 2n = 72.


Habitat: Low limestone boulders and ledges in deep moist woods
Elevation: 0–20 m

Distribution

V2 96-distribution-map.gif

Fla., Central America, South America

Discussion

A widespread tropical American species, Asplenium cristatum is local in west central Florida.

Selected References

None.

Lower Taxa

None.
... more about "Asplenium cristatum"
not rooting +
reduced +
Warren H. Wagner Jr. +, Robbin C. Moran +  and Charles R. Werth +
Lamarck in Lamarck et al. +
unreduced;reduced +
cuneate +
simple +  and 4-pinnate +
12 cm120 mm <br />0.12 m <br /> (18 cm180 mm <br />0.18 m <br />) +
6 cm60 mm <br />0.06 m <br /> (12 cm120 mm <br />0.12 m <br />) +
oblong-lanceolate +
thin;2.7cm;10cm +
0.5mm +  and 0.8mm +
Hemlock spleenwort +
Fla. +, Central America +  and South America +
0–20 m +
Low limestone boulders and ledges in deep moist woods +
monomorphic +
fertile +  and than sterile ones +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
perforate +, reticulate +, spiny +  and winged +
not articulate +
7 cm70 mm <br />0.07 m <br /> (17 cm170 mm <br />0.17 m <br />) +
blackish +  and greenish +
1/5 length of blade;1/2 length of blade +
c--shaped +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
in Lamarck et al.,Encycl. +
proliferous +
few +, 8 +  and 12 +
acroscopic +  and basiscopic +
less lunate;linear +
dorsiventral +  and symmetric +
not branched +
Asplenium cristatum +
Asplenium +
species +
anastomosing +