Zizyphoides (Trochodendraceae)


Crane P. R., Manchester, S. R., and Dilcher, D. L., 1991,  Reproductive and vegetative structure of Nordenskioldia (Trochodendraceae), a vesselless  dicotyledon from the early Tertiary of the Northern Hemisphere.  American Journal of  Botany v. 78, p. 1311-1334.
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