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| Nikon D7200, Nikkor 105mm micro, f3.5, 1/40s, ISO 400 |
The spore-producing organs of ferns are grouped on the underside of adult fronds in structures called sori and protected by a membrane called indusium that falls off when mature.
Els òrgans productors d’espores de les falgueres es troben agrupats en el revés de les frondes adultes en unes estructures anomenades sorus i protegits per una membrana anomenada indusi que cau en madurar.
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