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American Journal of Botany, Vol. 51, No. 6, Part 1 (Jul., 1964), pp. 591-597 (7 pages) Two distinct adult leaf forms, i.e., land and submerged leaves, of the aquatic fern Marsilea vestita were ...
Judith E. Skog, David L. Dilcher, A New Species of Marsilea from the Dakota Formation in Central Kansas, American Journal of Botany, Vol. 79, No. 9 (Sep., 1992), pp ...
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