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Leaf
Stipules
absent
present
Flower
Stamen Number
1
2
Pollen
monads
dyads
Tepals
present
absent
Podostemaceae
Rib number
3
4
5
6
7
8
9
Flowers arise from foliaceous roots
yes
no
Papillae on upper capsule valve
yes
no
Flowers surrounded by fused leaf sheaths...
Yes
No
Andropodium
Present
Absent
Flower projecting from ruptured spathella
Yes
No
Flowers embedded in cavity of stem
No
Yes
Stems orientation
upright (1 attachment point)
prostrate (attached along their length)