| Answer | Crossword Clue |
|---|---|
| VEIN | Leaf rib. |
| VEIN | Rib of a leaf |
| VEIN | Branching rib of a leaf. |
| midrib | the central or middle rib of a leaf |
| unicostate | of a leaf, having a single rib or strong nerve running upward from the base |
| costae | part (as the midrib of a leaf or the anterior vein of an insect wing) that resembles a rib |
