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The Collaborative International Dictionary
Epiphyllospermous

Epiphyllospermous \Ep`i*phyl`lo*sper"mous\, a. [Gr. 'epi` + fy`llon leaf + spe`rma seed.] (Bot.) Bearing fruit on the back of the leaves, as ferns.
--Harris (1710).

Wiktionary
epiphyllospermous

a. (context obsolete botany English) That bears seeds on the backs of the leaf