adder's-tongue
Ophioglossum pusillum Raf.

Ophioglossum pusillum, known as northern adder's tongue, is a fern species in the family Ophioglossaceae. It was first described in 1814 by Rafinesque.
Description
Ophioglossum pusillum is a member of the Ophioglossaceae family and is native to regions including British Columbia, Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec, Saint Pierre and Miquelon, Vermont-US, Alaska, California, Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, and Maryland. Commonly referred to as northern adder's tongue, this fern is part of the genus Ophioglossum.
Other common names
Northern Adder'S-TongueNorthern Adderstongueadder's-tongue
Distribution
British Columbia · Manitoba · New Brunswick · Nova Scotia · Ontario · Prince Edward Island · Quebec · Saint Pierre and Miquelon · Vermont-US · Alaska · California · Connecticut · Delaware · District of Columbia · Illinois · Indiana · Iowa · Kentucky · Maine · Maryland · Massachusetts · Michigan · Minnesota · Montana · Nebraska · New Hampshire · New Jersey · New York · Newfoundland · North Carolina
Synonyms
Ophioglossum vulgatum var. pseudopodumOphioglossum vulgatum f. pseudopodumOphioglossum vulgatum f. pusillum
