1) 🌺Exploring the roots or orchid origins

A recent phylogenomic study suggests that orchids first evolved in Laurasia (ancient North America and Eurasia) around 83 million years ago, challenging earlier hypotheses that placed their origin in Australia. 🦘

The authors used DNA sequencing to construct a comprehensive orchid phylogenetic tree and occurrence data from GBIF to map species spatial distributions.

2) From this, they identified the regions of the richest orchid diversity, where new lineages emerged and how orchids spread geographically over time.

The study highlights Costa Rica and Panama as major centres of orchid diversification, where mountainous landscapes and tropical climates created conditions that accelerated the emergence of new lineages. ⛰️☀️

Read more: https://gbif.link/wWi2T

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