adjectiveBotany & Zoology
1Having parts arranged in groups of two.
- Most basal Eudicots are dimerous or trimerous, with only occasionally pentamerous types (Sabiaceae, Ranunculaceae) which represent homoplasious trends.
- This thallus structure with dimerous organization allows Arenigiphyllum to be compared with extant members of Corallinales, both Corallinaceae and Sporolithaceae.
- These applanate thalli are dimerous and in many examples only have the prostrate filaments and one epithallial cell in the perpendicular system.
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