Pteris tripartita

Swartz

J. Bot. (Schrader) 1800(2): 67. 1801.

Common names: Giant brake
Introduced
Synonyms: Litobrochia tripartita (Swartz) C. Presl
Treatment appears in FNA Volume 2.

Stems stout, short-creeping, densely and conspicuously scaly; scales pale-brown. Leaves clustered, 1–2 m. Petiole straw-colored to brownish red, to more than 1 m, scaly proximally, otherwise glabrous at maturity. Blade deltate to pentagonal, pedate, ultimate divisions pinnately divided, 1–2 × 1–2 m; rachis not winged. Pinnae few, closely spaced, remaining green through winter, not decurrent on rachis, not articulate to rachis, oblong-lanceolate, 1–3-forked, to 7 × 6 dm; base asymmetrical, acute; apex acute; rachis and costae glabrate or with minute hairs, especially near axils of proximal pinnae; penultimate pinnules linear to linear-lanceolate, pinnatifid, separated, not remaining green through winter, not articulate to rachis. Ultimate segments of blade numerous, linear-oblong to linear-lanceolate, to 19 × 6 mm, margins entire or serrulate, apex obtuse and rounded to acute; terminal segments 3–4 cm longer and more tapering than lateral segments. Veins anastomosing near costae and costules, becoming forked and free near margins of ultimate segments. Sori narrow, blade tissue exposed abaxially.


Habitat: Terrestrial in cypress, pond-apple, and other swamps or forested wet habitats, on constantly moist, circumneutral soils
Elevation: 0–50 m

Distribution

V2 666-distribution-map.gif

Introduced; naturalized in scattered locations, Fla., West Indies, Central America, South America, native to tropical Asia

Discussion

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

... more about "Pteris tripartita"
Rounded (?) +  and Acute (?) +
Clifton E. Nauman +
Swartz +
scaly +, pubescent +, sometimes +  and glabrous +
deltate +  and pentagonal +
Giant brake +
naturalized in scattered locations +, Fla. +, West Indies +, Central America +, South America +  and native to tropical Asia +
0–50 m +
yellow +  and white +
obcordate;reniform +
Terrestrial in cypress, pond-apple, and other swamps or forested wet habitats, on constantly moist, circumneutral soils +
minute +
monomorphic +
spaced;clustered +
recurved +  and reflexed +
conspicuous +
noncircinate +  and circinate +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
straw-colored;brownish red +
not articulate +
J. Bot. (Schrader) +
with minute hairs +  and glabrate +
persistent +
elongate +
Introduced +
intramarginal +
1 +, 32 +  and 64 +
tetrahedral +
not lustrous +
creeping +  and erect +
Litobrochia tripartita +
Pteris tripartita +
species +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
0 cm0 mm <br />0 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
0 cm0 mm <br />0 m <br /> (?) +  and 0.6 cm6 mm <br />0.006 m <br /> (?) +
crescent--shaped +  and roundish +
anastomosing +
on rock +  and terrestrial +