Isoetes louisianensis - Earth.com
isoetes louisianensis
12-22-2016

Isoetes louisianensis

Isoetes louisianensis NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

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Isoetes louisianensis, the Louisiana quillwort, is a small, grass-like aquatic plant of the family Isoetaceae. It is “one of the rarest quillworts in North America.” It occurs in only five locations in St. Tammany and Washington Parishes of Louisiana and some spots in southern Mississippi (United States). It is federally listed as an endangered species, partly due to its highly restricted range.

The Louisiana quillwort occurs predominantly on sand and gravel bars on small to medium-sized streams. These plants live for periods underwater. They are regularly inundated as much as 50 centimeters (20 inches) following rains, and may be inundated for long periods in wet seasons. Its habitat follows roughly along the Bogue Chitto River. Associated plants include primrose-leafed violet (Viola primulifolia), bulrush (Scirpus divaricatus), water-willow (Justicia lanceolata), yellow-star grass (Hypoxis leptocarpa), yellow-eyed grass Xyris sp. and sedge (Carex sp.), swamp tupelo (Nyssa sylvatica var. biflora), water tupelo (Nyssa aquatica), sweetbay (Magnolia virginiana), bald cypress (Taxodium distichum), swamp laurel oak (Quercus obtusa), red maple (Acer rubrum), loblolly (Pinus taeda), ti ti (Cyrilla racemiflora), fetterbush (Lyonia lucida), and winterberry (Ilex verticillata).

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Detailed information
Full Name: Louisiana quillwort (Isoetes louisianensis)
Where found: Wherever found
Critical Habitat:N/A
Species Group:Ferns and Allies
Current listing status
Status Date Listed Lead Region Where Listed
Endangered 10/28/1992 Southeast Region (Region 4) Wherever found
  • States/US Territories in which the Louisiana quillwort, Wherever found is known to or is believed to occur: Alabama , Louisiana , Mississippi
  • US Counties in which the Louisiana quillwort, Wherever found is known to or is believed to occur: View All
Federal register documents
Recovery
No critical habitat rules have been published for the Louisiana quillwort.
Date
Title
Plan Action Status
Plan Status
09/30/1996 Louisiana Quillwort View Implementation Progress Final
Date
Title
Plan Action Status
Plan Status
09/30/1996 Louisiana Quillwort View Implementation Progress Final
Date
Citation Page
Title
Document Type
04/09/2010 75 FR 18233 18234 5-Year Status Reviews of 10 Southeastern Species; Notice of initiation of reviews; request for information
  • Notice 5-year Review, Initiation
09/27/1995 60 FR 49854 49855 Notice of Availability of a Draft Recovery Plan for the Louisiana Quillwort Fern for Review and Comment
  • Notice Recovery Plan Avail.
Date
Title
06/20/2012 Louisiana quillwort (Isoetes louisianensis) 5-year Review: Summary and Evaluation
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