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Pentaphragma is a genus of flowering plants. Pentaphragma is the sole genus in Pentaphragmataceae, a family in the order Asterales. These species are fleshy herbs, with asymmetrical leaf blades. They are found in Southeast Asia. Pentaphragma is rayless, but eventually develops rays in at least one of the species studied. This is interpreted as related to secondary woodiness or upright habit within a predominantly herbaceous phylad. The vessel elements of Pentaphragma have features universally interpreted as primitive in dicotyledons: scalariform perforation plates with numerous bars; pit membrane remnants in perforations; scalariform lateral wall pitting; the genus also has fiber-tracheids with prominently bordered pits.
Pentaphragma acuminatum · Pentaphragma bartlettii · Pentaphragma bicolor · Pentaphragma decurrens · Pentaphragma gamopetalum · Pentaphragma horsfieldii · Pentaphragma jaherii · Pentaphragma longisepalum · Pentaphragma pendulum · Pentaphragma poilanei · Pentaphragma spicatum
Text excerpted from the Wikipedia article Pentaphragma by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
