Species

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Total: 30

species valid

Ariadnaesporites fluviatilis J.W. Hall Pollen & Spores, 1967, 9(3): 566. 25 Jan 1968

species valid

Ariadnaesporites intermedius J.W. Hall Pollen & Spores, 1967, 9(3): 563. 25 Jan 1968

species valid

Azolla circinata Oltz, J.W. Hall in J.W. Hall Amer. Fern J., 58(2): 79. 24 Jun 1968

species valid

Azolla elegans R.K. Jain, J.W. Hall Amer. J. Bot., 56(5): 531. 29 May 1969

species valid

Azolla fragilis R.K. Jain, J.W. Hall Amer. J. Bot., 56(5): 529. 29 May 1969

species valid

Azolla montana J.W. Hall in J.W. Hall, N.P. Swanson Amer. J. Bot., 55(9): 1057. 29 Oct 1968

species valid

Azolla simplex J.W. Hall Amer. J. Bot., 56(10): 1177. 17 Dec 1969

species valid

Azolla stanleyi R.K. Jain, J.W. Hall Amer. J. Bot., 56(5): 531. 29 May 1969

species valid

Azolla vela (Dijkstra) R.K. Jain, J.W. Hall Amer. J. Bot., 56(5): 529. 29 May 1969

species valid

Azollopsis coccoides J.W. Hall Amer. Fern J., 58(2): 81. 24 Jun 1968

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