This video shows the process of sporangial dehiscence [i.e., the splitting of the sporangial capsule and the discharge of spores] on Dryopteris marginalis (L.) A. Gray (common names: marginal shield fern; marginal wood fern).
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Up, up and....er gone: A great paper by @batkesp @SETarvin. Nowhere to escape – Diversity and community composition of ferns and lycophytes on the highest mountain in Honduras
https://www.cambridge.org/core/journals/journal-of-tropical-ecology/article/nowhere-to-escape-diversity-and-community-composition-of-ferns-and-lycophytes-on-the-highest-mountain-in-honduras/8E676ED96AAA0E727D1BC92722154C18#
Early "Rootprints" of Plant Terrestrialization: Selaginella Root Development Sheds Light on Root Evolution in Vascular Plants http://dlvr.it/SB2N20