with stem nodes each containing 🍁︎ leaves or leaf scars usually numbering/arranged:
1-at-a-node,
arranged
╧╤╧╤
alternate
or spiral

2-at-a-node,
arranged
═╪═╪
opposite

3+-at-a-node,
arranged
═❋═❋
whorled
:

2-at-a-node, arranged ═╪═╪ opposite

2-at-a-node,
arranged
═╪═╪
opposite
MAD-Cap-Horse
  2-at-a-node
arranged ═╪═╪
opposite ⊕
decussate
Hydrangea family Hydrangeaceae

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plant terminology