Dryopteris ludoviciana

(Kunze) Small

Ferns S. E. States 281. 1938.

Common names: Southern wood fern
Endemic
Basionym: Aspidium ludovicianum Kunze Amer. J. Sci. Arts, ser. 2, 6: 84. 1848
Synonyms: Dryopteris floridana (Hooker) Kunze
Treatment appears in FNA Volume 2.

Leaves somewhat dimorphic, green through winter, 35–120 × 10–30 cm. Petiole more than 1/4 length of leaf, scaly at base; scales scattered, brown. Blade dark green, lanceolate, pinnate-pinnatifid, herbaceous, not glandular. Pinnae nearly in plane of blade, lance-oblong; fertile pinnae in distal 1/2 of leaf, distinctly narrower than proximal vegetative pinnae (only in this species); basal pinnae lanceolate-oblong, much reduced, basal pinnules slightly shorter than adjacent pinnules, basal basiscopic pinnule slightly longer than basal acroscopic pinnule; pinnule margins distantly serrate. Sori midway between midvein and margin of segments. Indusia lacking glands. 2n = 82.


Habitat: Swamps and wet woods
Elevation: 0–100 m

Distribution

V2 272-distribution-map.gif

Ala., Ark., Fla., Ga., La., N.C., S.C.

Discussion

Dryopteris ludoviciana is endemic to southeastern United States. This diploid is one of the parents of D. celsa and D. cristata. It crosses with D. celsa to produce sterile hybrids.

Selected References

None.

Lower Taxa

None.

"not" is not a number. "swollen" is not a number."/" is not declared as a valid unit of measurement for this property."distinctly narrower" is not a number.

... more about "Dryopteris ludoviciana"
pinnatifid +
James D. Montgomery +  and Warren H. Wagner Jr. +
(Kunze) Small +
Aspidium ludovicianum +
simple to commonly +
pinnate-pinnatifid;lanceolate +
reduced +
leathery;herbaceous to somewhat +
roundish +
Southern wood fern +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, N.C. +  and S.C. +
0–100 m +
often +  and glabrous +
Swamps and wet woods +
caducous +  and persistent +
round-reniform +
monomorphic +
35 cm350 mm <br />0.35 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
1/4 +  and 2/3 +
not articulate +
not +, spinulose +  and serrate +
slightly longer +
sessile +  and petiolulate +
inequilateral +
enlarged +  and reduced +
Ferns S. E. States +
round +, cuplike +, hoodlike +, reniform +, falcate +  and linear +
2 +  and 3 +
persistent +
linear;ovate +
discrete +
reniform +  and oblong +
dictyostelic +, unbranched +  and branched +
short-creeping +  and erect +
Dryopteris floridana +
Dryopteris ludoviciana +
Dryopteris +
species +
anastomosing +  and simple +
epiphytic +  and hemiepiphytic +