Eurasian ladyfern (Athyrium filix-femina) sporangia — ⓘ

Athyrium filix-femina sporangia | Source

← family: Athyriaceae

genus

Athyrium

True ladyferns

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1 species:

Athyrium filix-femina

Description

Ferns with stipes that have adaxial grooves, two vascular bundles and are scaly at the base. Blade segments are asymmetrical at their bases. Groove of rachis continuous to grooves of costae and costules. Veins free and extending to toothed tips at the blade margin.

Occurrence map True ladyferns (Athyrium) in Finland — ⓘ

Source

References:

Wei, R., Ebihara, A., Zhu, Y. M., Zhao, C. F., Hennequin, S., & Zhang, X. C. (2018). A total-evidence phylogeny of the lady fern genus Athyrium Roth (Athyriaceae) with a new infrageneric classification. Molecular Phylogenetics and Evolution doi: 10.1016/j.ympev.2017.10.019