Goniopteris verecunda, synonym Thelypteris verecunda,[1] is a rare species of fern known by the common name Barrio Charcas maiden fern.

[2] It is endemic to Puerto Rico, where it is known from only three localities.

It is a federally listed endangered species of the United States.

[4] At that time it was known to exist at three locations in Quebradillas, Hatillo, and San Sebastián in Puerto Rico.

[4] This terrestrial fern has two types of fronds, sterile leaves just a few centimeters long and narrower fertile fronds up to 15 centimeters long.