Midvein: Primary, usually central, vein running from the stalk to the tip of a leaf or leaflet
the narrow pigmented stripe overlaying the midvein; although the stripe is transversely divided into a distal and basal segment, the term "midrib" in the descriptions applies only to the more distinctly pigmented distal segment
The central rib of a leaf or other organ Monoecious- Male and Female flowers are borne on the same plant Mucronate- Having a small, hard point, as the projection of the mid rib of a leaf