| |
| Kingdom Plantae |
| |
Isoetes flaccida var. alata N. Pfeiff. – not accepted – southern quillwort
|
| |
Isoetes lithophila N. Pfeiff. – accepted
|
| |
Isoetes lithophylla N. Pfeiff. – not accepted – rock quillwort
|
| |
Isoetes virginica N. Pfeiff. – accepted – Virginia quillwort
|
| |
Isoetes virginica var. piedmontana N. Pfeiff. – not accepted
|
| |
Isoetes virginica var. virginica N. Pfeiff. – not accepted
|
| |
Thismia americana N. Pfeiff. – accepted – banded Trinity |
| |
|
