A Grammatical Dictionary of Botanical Latin

supradecompositus,-a,-um (adj.A): supradecompound, i.e. so many times divided that the degree of division is not readily evident; “divided into a multitude of pieces. So much divided that the number and mode of division cannot be precisely ascertained; as the leaves of the Carrot, Fennel, &c.” (Lindley); “having various decompound divisions or ramifications. In leaves it is applied to such as have the primary petiole devided into secondary ones, and the secondary into a third set, as in the leaf of Daucus Carota” (Lindley).

Decompositus,-a,-um (adj.A): decompound, “having various compound divisions or ramifications. In leaves it is applied to those the petiole of which bears secondary petioles, as in the leaf of Mimosa purpurea” (Lindley).

Corymbus supradecompositus.

[Hepatic] Conocephalus supradecompositus (Lindb.) Stephani; Sandea supradecompositus Lindb.