Isoëtes acadiensis
Canad. J. Bot. 59: 2592. 1981.
Common names: Acadian quillwort
Treatment appears in FNA Volume 2.
Revision as of 00:31, 30 July 2020 by imported>Volume Importer
Plants aquatic, submerged. Rootstock nearly globose 2 (–3) -lobed. Leaves evergreen, olive green to reddish-brown, pale toward base, spirally arranged, to 20 cm, pliant, gradually tapering to tip. Velum covering less than 1/2 of sporangium. Sporangium wall brown-streaked. Megaspores white, 400-650 μm diam., rugulate to reticulate with ridges having rounded or smooth crests; girdle smooth. Microspores gray in mass, 25–35 μm, spinulose. 2n = 44.
Phenology: Spores mature in late summer.
Habitat: Emergent or in shalow water of slightly acid lakes, ponds, and streams
Distribution
![V2 632-distribution-map.gif](/w/images/4/4e/V2_632-distribution-map.gif)
N.B., Nfld. and Labr. (Nfld.), N.S., Mass., Maine, N.H., N.Y.
Discussion
Selected References
None.
Lower Taxa
None.
... more about "Isoëtes acadiensis"
separating +
Acadian quillwort +
rounded +
alternating +
vascular +
surrounding +
vascular +
several +
Present +
septate +
longitudinal +
simple +
arranged +
straight +
evergreen +
pliant +
recurved;erect;spreading +
surrounding +
tapering +
deltate;cordiform +
membranous +
exposed +
endosporic +
trilete +
white +
globose +
9-celled +
monolete +
spinulose +
reniform +
textured +
brownish +
several +
fibrous +
hardened +
converging +
Canad. J. Bot. +
1981 +
arising +
cormlike +
brown +
proliferous +
hardened +
multitailed +
brown-streaked +
Isoëtes acadiensis +
Isoëtes +
species +
covering +
brown-streaked;completely brown +
submerged +
heterosporous +