About Isoetes nuttallii A.Braun ex Engelm.
Common Name and Classification
Isoetes nuttallii, commonly known as Nuttall's quillwort, is a species of quillwort, which is a type of lycopod.
Native Range and Habitat
It is native to shallow waters and other wet habitats in western North America, ranging from British Columbia to California.
Leaf Characteristics
This species produces up to 60 pointed, cylindrical leaves that range in color from green to gray-green; each leaf grows 7 to 17 centimeters long.
Sporangia Characteristics
A velum completely covers its spherical sporangia, which measure 5 millimeters long and 1.5 millimeters wide.
Ligule Characteristics
Its ligule is small and triangular.
Megaspore Size
The megaspores of Isoetes nuttallii are 400 to 500 micrometers in diameter.
Microspore Characteristics
Its microspores, which are spiny and covered in tubercles, measure 28 to 31 micrometers long.
