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Webster 1913 Edition

Adj.

[See

(Bot.)

Placed at the same node with a leaf, but separated from it by the whole diameter of the stem;

as, an

oppositifolious

peduncle

Adj.

[L. oppositus and folium, a leaf.]

In botany, opposite to the leaf; as an oppositifolious peduncle.

oppositifolious ‎(not comparable)

(botany) Placed at the same node with a leaf, but separated from it by the whole diameter of the stem.
an oppositifolious peduncle