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.
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.
... more about "Isoëtes caroliniana"
separating +
Carolina quillwort +
alternating +
vascular +
surrounding +
vascular +
obscure +
several +
Present +
septate +
longitudinal +
simple +
arranged +
straight +
evergreen +
pliant +
recurved;erect;spreading +
surrounding +
tapering +
deltate;cordiform +
membranous +
exposed +
endosporic +
trilete +
white +
cristate +
9-celled +
monolete +
spinulose +
light-brown +
reniform +
textured +
brownish +
several +
fibrous +
hardened +
converging +
Amer. Fern. J. +
1992 +
lamellate +
arising +
cormlike +
brown +
proliferous +
hardened +
multitailed +
unpigmented +
Isoëtes caroliniana +
Isoëtes +
species +
covering +
brown-streaked;completely brown +
emergent +
heterosporous +