Blechnum serrulatum

Richard

Actes Soc. Hist. Nat. Paris 1: 114. 1792.

Common names: Swamp fern marsh fern dentate midsorus fern
Treatment appears in FNA Volume 2.

Stems stout, horizontal and long-creeping, branched, partly erect at tip, rarely climbing tree trunks. Leaves ± monomorphic, widely spaced, erect to arching. Petiole dull yellow or grayish brown or light-brown, 10-55 cm, finely scaly proximally. Blade broadly linear to elliptic-lanceolate, 1-pinnate throughout, with conform terminal pinnae, 25-70 × 5-28 cm, base truncate, glabrous. Rachis lacking indument abaxially. Pinnae articulate to rachis except for terminal pinna, subsessile to short-stalked; larger pinnae ± straight, linear to linear-elliptic or linear-lanceolate, 3-15 × 0.5-1.8 cm, fertile pinnae often slightly smaller and contracted; margins serrulate; costae with indument of scales abaxially. 2n = 72.


Habitat: Swamps, marshes, wet prairies, and adjacent moist pine woods or hammocks
Elevation: 0 m

Distribution

V2 372-distribution-map.gif

Fla., Central America, South America

Discussion

Plants of Blechnum serrulatum occurring in open sun are often dwarfed and stiffly erect. Those occurring in brackish conditions or perennially flooded areas may become hemiepiphytes.

Selected References

None.

Lower Taxa

None.
... more about "Blechnum serrulatum"
Clifton E. Nauman +
Richard +
2-pinnate +, simple +  and 1-pinnate +
anthocyanic +
25 cm250 mm <br />0.25 m <br /> (70 cm700 mm <br />0.7 m <br />) +
occasionally +  and glabrous +
broadly linear +  and elliptic-lanceolate +
5cm;28cm +
Swamp fern +, marsh fern +  and dentate midsorus fern +
sorus-bearing +
hairy +, scaly +  and glabrous +
sorus-bearing +
Fla. +, Central America +  and South America +
Swamps, marshes, wet prairies, and adjacent moist pine woods or hammocks +
monomorphic +
cespitose +  and dimorphic +
fertile +  and sterile +
ornamented +
not articulate +
light-brown;grayish brown;yellow;dull +
10 cm100 mm <br />0.1 m <br /> (55 cm550 mm <br />0.55 m <br />) +
subsessile +  and short-stalked +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
smaller +
0.5 cm5 mm <br />0.005 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Actes Soc. Hist. Nat. Paris +
hairy +, scaly +  and glabrous +
black +  and brown +
continuous +  and uninterrupted +
elongate +
reniform +
erect +  and horizontal +
slender +  and stout +
Blechnum serrulatum +
Blechnum +
species +
tree +  and climbing +
anastomosing +
rarely +  and terrestrial +
36 +, 34 +, 32 +, 31 +, 29 +  and 28 +