Isoëtes caroliniana
Amer. Fern. J. 82: 26. 1992.
Common names: Carolina quillwort
Basionym: Isoëtes engelmannii var. caroliniana A. A. Eaton Fern Bull 8: 60. 1900
Treatment appears in FNA Volume 2.
Revision as of 20:52, 16 December 2019 by FNA>Volume Importer
Plant aquatic, emergent. Rootstock nearly globose, 2-lobed. Leaves evergreen, bright green, pale toward base, spirally arranged, to 60 cm, pliant, gradually tapering to tip. Velum covering less than 3/4 of sporangium. Sporangium wall unpigmented. Megaspores white, 400–550 μm diam., cristate to reticulate with broken lamellate ridges; girdle obscure. Microspores light brown in mass, 24–34 μm, spinulose. 2n = 22.
Phenology: Spores mature summer.
Habitat: Emergent or in shallow water of upland lakes and bogs
Distribution
N.C., Tenn., Va., W.Va.
Discussion
Selected References
None.
Lower Taxa
None.