Isoetes velata subsp. dubia (Gennari) Batt. & Trab., Fl. Algérie Tunisie: 407. 1905
Isoetes velata subsp. dubia, Fl. Algérie Tunisie: 407. 1905
is new combination for Isoetes dubia in Comment. Soc. Crittog. Ital. 1: 104. 1861
has orthographic variant Isoëtes velata subsp. dubia
? Isoetes velata subsp. dubia, Fl. Algérie Tunisie: 407. 1905