deep-water quillwort, more...
[Isoëtes hieroglyphica A.A.Eaton, more]
Etymology: Isoetes: from Greek isos, "ever," and etas, "green," implying the character of being evergreen. Note"
Plants: perennial, submersed aquatic; underground, thick, lobed stem with forked roots
Leaves: 4 long air chambers, center vein, dark green, firm, often twisted
Habitat: wet; lakes, ponds, soft water 3' to > 10'; in sandy, gravelly soil
Conservation Status: Native