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Sceptridium biternatum, the southern grapefern or sparse-lobe grape fern , is a perennial fern in the family Ophioglossaceae, occurring in eastern North America.It occurs in "low woods, in hardwood and pine forests, in fields, and on roadsides."
Azolla (mosquito fern, water fern, fairy moss) is a genus of seven species of aquatic ferns in the family Salviniaceae. They are extremely reduced in form and specialized, looking nothing like other typical ferns but more resembling the form of some mosses or even duckweeds .
Sceptridium is a genus of seedless vascular plants in the family Ophioglossaceae, [1] closely allied to (and often included as a subgenus [2] of) the genus Botrychium (the moonworts and grapeferns). It is also closely related to the genus Botrypus (the rattlesnake fern, often treated as the subgenus Osmundopteris under Botrychium ).
Lauri Holts, the Parks and Open Spaces ecologist for the city of Eugene, said this red-brown aquatic fern, called Azolla, is often an attention-grabber for Eugenians who notice the ponds' change.
Azolla rubra, known commonly as red azolla and Pacific azolla, is a species of aquatic fern native to Australia and New Zealand. [1] In New Zealand, it is also known by its Māori names returetu , roturotu , kārearea and kārerarera .
Adiantum lunulatum. Pteridaceae is a family of ferns in the order Polypodiales, [2] including some 1150 known species in ca 45 genera [3] (depending on taxonomic opinions), divided over five subfamilies. [4]
The first is by size, the rattle snake fern can be found up to two feet tall compared to the cut-leaf fern that can be found up to a foot tall. Second the petiole or stalk for a cut-leaf fern is light green while the rattlesnake fern’s petiole is pink at the base. Sceptridium dissectum (Spreng.) Lyon was known as Botrychium dissectum Spreng.
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