Isoetes acadiensis

Isoetes acadiensis
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Lycophytes
Class:	Lycopodiopsida
Order:	Isoetales
Family:	Isoetaceae
Genus:	Isoetes
Species:	I. acadiensis
Binomial name
	Isoetes acadiensis; Kott

Isoetes acadiensis, the Acadian quillwort is a species of quillwort in the Isoetaceae family described by Kott in 1981.[1] It can be found along the shores of lakes, ponds, and rivers in Newfoundland, Nova Scotia, and New Brunswick, as well as in the American states Maine, Massachusetts, and New Hampshire.[2] It has a similar distribution to that of I. tuckermanii. It bears 9 to 35 mostly recurved leaves, each 5–21 cm long. The leaves are usually dark green, though can occasionally be tinged with red. The sporangium can be up to five millimeters long and 3 millimeters in length, covered one sixth to one third by the velum. The spherical megaspores are 400-570 micrometers in diameter, and bear smooth ridges. The kidney shaped microspores are 25 to 30 micrometers long.[2] It was originally believed to be a member of Isoetes hieroglyphica because of their similar megaspore structure.

References

"Isoetes acadiensis". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 25 May 2015.
Cody, William; Britton, Donald (1989). Ferns and Fern Allies of Canada. Agriculture Canada.

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[1] "Isoetes acadiensis". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 25 May 2015.

[Canada-2] Cody, William; Britton, Donald (1989). Ferns and Fern Allies of Canada. Agriculture Canada.