Native & Naturalized Plants of the Carolinas & Georgia


2244

Fern/Fern ally
Perennial

Non-native: Asian & African tropics
Documented growing wild in GA - SC

Uncommon, but increasingly invasive in natural habitats

Look for it in disturbed areas, and to be increasingly invasive in natural habitats (esp in the southern parts of our area), per Weakley's Flora

map
To see a detailed map, click here


Invasive?

This plant may be causing problems in natural areas outside its native range, according to authorities such as:

East Central Florida CISMA
Jil M. Swearingen, NPS, 2009-2013
SC Exotic Pest Plant Council, 2014

 

LEAVES:
Evergreen in Deep South/ Deciduous as it moves north?
Bipinnate-pinnatifid

FRUIT:
Summer/Fall

 

TO LEARN MORE about this plant, look it up in a good book!



Monilophytes (ferns): Leptosporangiate Ferns (true ferns): Polypodiales

WEAKLEY'S FLORA (5/21/15):
Macrothelypteris torresiana   FAMILY Thelypteridaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Macrothelypteris torresiana   FAMILY Thelypteridaceae

SYNONYMOUS WITH Thelypteris torresiana

SYNONYMOUS WITH (MISAPPLIED) Manual of the Southeastern Flora (Small, 1933)
Dryopteris setigera

 

COMMON NAME:
Mariana Maiden Fern, Swordfern


Click or hover over the thumbnails to see larger pictures.

image of Macrothelypteris torresiana

JK Marlow    jkm180529_2510

May    Greenville County    SC

image of Macrothelypteris torresiana

JK Marlow    jkm160612_043

June    McCormick County    SC

Petiole in cross section, after a day drying in the plant press.

image of Macrothelypteris torresiana

JK Marlow    jkm160612_053

June    McCormick County    SC

image of Macrothelypteris torresiana

Steve Marlow    snm160612_065

June    McCormick County    SC

image of Macrothelypteris torresiana

Steve Marlow    snm160612_073

June    McCormick County    SC

Petiole in cross section with 2 crescent-shaped vascular bundles at base, per Flora of North America.

image of Macrothelypteris torresiana

Steve Marlow    snm160612_081

June    McCormick County    SC

image of Macrothelypteris torresiana

JK Marlow    jkm140701_533

July    Greenville County    SC

Swamp Rabbit Trail

image of Macrothelypteris torresiana

JK Marlow    jkm140710_705

July    Greenville County    SC

Cleveland Park

Blade covered w needlelike hairs, per Field Guide to the Ferns and Other Pteridophytes of Georgia.

image of Macrothelypteris torresiana

JK Marlow    jkm140710_708

July    Greenville County    SC

Cleveland Park

Pinnae with long tapering apex. Numerous, circular sori, in rows, per Field Guide to the Ferns and Other Pteridophytes of Georgia.

image of Macrothelypteris torresiana

JK Marlow    jkm180803_3633

July    Greenville County    SC

image of Macrothelypteris torresiana

JK Marlow    jkm140809_463

August    Greenville County    SC

Lake Conestee Nature Park

image of Macrothelypteris torresiana

JK Marlow    jkm140809_463b

August    Greenville County    SC

Lake Conestee Nature Park

image of Macrothelypteris torresiana

JK Marlow    jkm140809_483

August    Greenville County    SC

Lake Conestee Nature Park

image of Macrothelypteris torresiana

JK Marlow    jkm160826_008

August    Greenville County    SC

Roadside ditch

image of Macrothelypteris torresiana

L.L. (Chick) Gaddy    llg_20170810_143437

August    Charleston County    SC

Francis Marion National Forest

image of Macrothelypteris torresiana

JK Marlow    jkm141030_426

October    Greenville County    SC

image of Macrothelypteris torresiana

Marian StClair    msc_9723

October    Greenville County    SC

Fronds 60-125cm long. Blade broadly triangular, per Field Guide to the Ferns and Other Pteridophytes of Georgia.