Definition of pentamerous in English:
adjectiveBotany & Zoology
1Having parts arranged in groups of five.
- These species are notable for the plesiomorphic retention of venation (albeit already quite reduced) in their tegmina, segmented cerci, and pentamerous tarsi.
- The zygomorphic, pentamerous and spurred flowers are approximately 15 x 12 mm in diameter.
- Most basal Eudicots are dimerous or trimerous, with only occasionally pentamerous types (Sabiaceae, Ranunculaceae) which represent homoplasious trends.
1.1Consisting of five joints or parts. Compare with pentameral.
Definition of pentamerous in:
- British & World English dictionary
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