Succubous

The succubous is the way that the leaves of a liverwort are attached to the stem. If one were to look down from above (dorsal side) on a plant where the leaf attachment is "succubous", the lower edge of each leaf would overlap the next lower leaf along the stem. Because of this, the lower edge of each leaf is visible from above, but the edge of the leaf closer to the tip of the stem is obscured by a neighboring leaf. The opposite of "succubous" is incubous.