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Microsorum thailandicum is a fern in the family Polypodiaceae. It is sometimes called the blue oil fern. Like several other shady understory plant species, its leaves display blue iridescence. Initially unknown, the mechanism was later described as resulting from cellulose microfibrils stacked into helicoidal structures. Those structures appear on both the adaxial and abaxial epidermal surface, differing, with adaxial (top) epidermis being more blue, white abaxial (bottom) being red-shifted and less intense.
Musk Fern · Climbing Bird's Nest Fern · Microsorum · Microsorum scolopendria
Text excerpted from the Wikipedia article Microsorum thailandicum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
