Description
provided by eFloras
Plants aquatic, submerged. Rootstock nearly globose, 2-lobed. Leaves evergreen, dark green, pale reddish brown toward base, spirally arranged, to 12 cm, rigid, gradually tapering to tip. Velum covering entire sporangium. Sporangium wall unpigmented, entirely enclosed in translucent saccate membrane. Megaspores white, 425--575 µm diam., obscurely rugulate with molded and wavy ridges; girdle obscure. Microspores light brown in mass, 24--32 µm, spinulose. 2n = 22.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat & Distribution
provided by eFloras
Spores mature in summer. Deep water of cold, oligotrophic, acidic lakes; of conservation concern; N.B., N.S.; Maine.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA