What are opposite leaves?
Def: Stems or leaves appear across from one another at the
same node;
Arrangement Along Stem:
Opposite leaves may appear in either a distichous or decussate
arrangement.
Distichous: Leaves arranged in two ranks along either side
of the stem.
Decussate: Leaves arranged in opposite pairs, rotating 90°
at every node.
As with many features, arrangement along the stem is not always
opposite decussate or distichous.
|