Explain briefly reticulate venation.

Explanation

Palmately reticulate venation (multicostate): In this type of venation there are two or more principal veins arising from a single point and they proceed outwards or upwards. The two types of palmate reticulate venation are
(i) Divergent type: When all principal veins originate from the base and diverge from one another towards the margin of the leaf as in Cucurbita, Luffa, Carica papaya, etc.
(ii) Convergent: When the veins converge to the apex of the leaf, as in Indian plum (Zizyphus)bay leaf (Cinnamomum)
(a) Pinnately reticulate
(b) Palmately reticulate (Divergent)
(c) Palmately reticulate(Convergent)