1) Ventral 
===Coronation of the British monarch=== ...
the side next to the axis; e.g. the upper surface of a leaf.
towards the axis, referring to the surface of an organ that is closest to the axis in bud. cf. abaxial
next to or towards the axis
Directed toward the stem of a plant; pertaining to the upper surface of a leaf. 
The surface or side of an organ facing towards the apex, or next to the axis (usually the upper side).
The upperside when referring to a leaf, or more specifically the side of the organ facing the stem (axis).
<biology, plant biology> Facing towards the axis. ... Compare: abaxial. ... (09 Oct 1997) ... 
See ventral.
The leaf surface facing the stem of the plant.
Type: Term Pronunciation: ad-ak′sē-ăl Definitions: 1. Toward an axis, or on one or other side of an axis.
In botany, the term adaxial describes something facing towards the axis, such as the suface of a leaf that faces the stem.
[adj] - (biology) nearest to or facing toward the axis of an organ or organism
adjective nearest to or facing toward the axis of an organ or organism; `the upper side of a leaf is known as the adaxial surface`
situated on the side toward the axis or stem.