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Lorinseria C. Presl. Netted Chain Fern.

A monotypic genus, perennial herb, of e. North America. Lorinseria has often been lumped into the Eurasian (mainly e. Asian) Woodwardia, but is basal to Anchistea + Woodwardia, morphologically distinctive from both, and an ancient independent lineage (Gasper et al. 2017; Gasper et al. 2016).

ID notes:In sterile leaf, Lorinseria areolata is sometimes confused with Onoclea sensibilis, but Lorinseria has the pinnae generally alternate (vs. tending to be opposite), the pinnae generally acute or acuminate (vs. obtuse to less typically acute), and the pinna margin finely serrulate (vs. entire).

Ref: Cranfill (1993b) In Flora of North America Editorial Committee (1993b); Cranfill & Kato (2003); Gasper et al. (2016); Gasper et al. (2017); Kramer, Chambers, & Hennipman In Kramer & Green (1990); Li et al. (2016b); PPG I (2016). Show full citations.

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image of plant© Alan M. Cressler | Lorinseria areolata | Original Image ⭷
image of plant© Alan M. Cressler | Lorinseria areolata | Original Image ⭷

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