Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations

Arthur Domingos‐Melo; Dhenife Mirelly Silva; Paulo Milet‐Pinheiro

doi:10.1111/btp.70111

October 13, 2025BiotropicaOpen Access

Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations

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Key Points

Mormodes orchids exhibit enantiostyly, enabling enhanced cross-pollination by utilizing distinct sides of pollinators.
The study shows that floral handedness allows these orchids to effectively transfer pollen during pollination.
Morphometric analysis highlights the unique floral structures and lateral twisting of the floral column in Mormodes orchids.
The findings imply that understanding floral handedness can shed light on orchid pollination mechanisms and evolution.

Implication

This analysis reveals unique floral adaptations in Mormodes orchids focusing on enantiostyly and cross-pollination.

Abstract

As observed by Charles Darwin, Mormodes (Catesetinae) orchids have mirrored flowers (enantiostyly), unique among orchids, which we demonstrate morphometrically. We provide a video of anthesis including lateral twisting of the floral column and hypothesize that these rare orchids utilize opposite sides of pollinators for pollen transfer to enhance cross‐pollination.

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Cite This Study

Domingos‐Melo et al. (2025) studied this question.

synapsesocial.com/papers/68eff7392ae617e5891a9400 https://doi.org/10.1111/btp.70111

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Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations

Key Points

Implication

Abstract

Discussion

Cite This Study

Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations

Key Points

Implication

Abstract

Discussion

Cite This Study

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