| ┌1A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
divided by a moderate to pronounced constriction into a welldefined upper limb and a convoluteConvolute: The process of convolute vernation involves the wrapping of one margin of the leaf's blade over the other. This folding mechanism makes the emerging leaf look like a tube.
lower portion; inflorescences during anthesisAnthesis: The period during which pollen is presented and/or the stigma is receptive.
with complex spatheSpathe: A large sheathing bract enclosing the flower cluster.
and spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
movements and often spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
elongation .. 2
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| │ | ┌2A. | Leaf blades narrowly lanceolateLanceolate: 
, bases cuneateCuneate: 
; interpistilPistil: The female reproductive part of a flower.
lar staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s absent .. 📌Geniculata Supergroup
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| │ | └2B. | Leaf blades mostly sagittateSagittate: 
or cordateCordate: 
, never narrowly lanceolateLanceolate:
; interpistilPistil: The female reproductive part of a flower.
lar staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s present, only very rarely absent .. 📌Cyrtocladon Supergroup
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| ├1B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
not divided into a lower and upper portion by a constriction; inflorescence movement during anthesisAnthesis: The period during which pollen is presented and/or the stigma is receptive.
comprising simple gaping and closing of the spatheSpathe: A large sheathing bract enclosing the flower cluster.
limb, with virtually no spadixSpadix: A spike of minute flowers closely arranged around a fleshy axis and typically enclosed in a spathe.
movement .. 3
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| │ | ┌3A. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
at most 1.5 cm long, usually much less; staminate flowers each comprising 2(-3) stamenStamen: The pollen-producing reproductive organ of a flower.
s without an expanded flat connective; interpistilPistil: The female reproductive part of a flower.
lar staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s much shorter than pistilPistil: The female reproductive part of a flower.
s; mostly small plants and often rheophyticRheophytic: An aquatic plant that lives in fast moving water currents.
.. 📌Chamaecladon Supergroup
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| │ | └3B. | SpatheSpathe: A large sheathing bract enclosing the flower cluster.
more than 2 cm long and usually much longer; staminate flowers each comprising 4 stamenStamen: The pollen-producing reproductive organ of a flower.
s, almost always with a flat, expanded connective; interpistilPistil: The female reproductive part of a flower.
lar staminodeStaminode: A sterile or abortive stamen, frequently resembling a stamen without its anther.
s equalling or longer than pistilPistil: The female reproductive part of a flower.
s; mostly medium to large plants, never rheophyticRheophytic: An aquatic plant that lives in fast moving water currents.
.. 📌Homalomena Supergroup
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