Vascular Plants of North Carolina
Account for Appalachian Quillwort - Isoetes appalachiana   D.F. Brunton & D.M. Britton
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Section 1 » Order Isoetales » Family Isoetaceae
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AuthorD.F. Brunton & D.M. Britton
DistributionThis is a fairly newly described species, in 1997. Present over most of the Coastal Plain, though scarce or absent in the northern portion. A few records for the eastern Piedmont and southern mountains -- despite the common and scientific names. However, most species of this cryptic genus are under-collected, and thus the range should be more widespread than shown on the map.

This is a sparsely collected species in the East, ranging from PA southward to northern FL, and west only to eastern TN and AL.
AbundancePoorly known, but seemingly not scarce in the Coastal Plain. The NCNHP's State Rank of S3S4 suggests that it is not rare, and perhaps is at least locally fairly common in the southeastern half of the Coastal Plain. Likely very rare to rare elsewhere.
Habitat"Seepages, small woodland streams, ephemeral wetlands, backwaters" (Weakley 2018).
PhenologyFruiting period has perhaps not been described.
IdentificationAll Isoetes species are quite grass-like, with numerous very slender and grass-like leaves growing from a common base. Most importantly, they are swollen at the base, where the megaspores are present, the key structure for separation of species. The leaves are terete (rounded) and hollow. For identification, see the key in Weakley (2018).
Taxonomic CommentsThe species was first described in 1997. It was a part of I. engelmannii in most references before being pulled out as a distinct species.

All Isoetes species are quite grass-like, with numerous very slender and grass-like leaves growing from a common base. Most importantly, they are swollen at the base, where the megaspores are present, the key structure for separation of species. The leaves are terete (rounded) and hollow. For identification, see the key in Weakley (2018).
Other Common Name(s)None
State RankS3S4
Global RankG4
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