Pellaea atropurpurea (Linnaeus) Link. Common name: Purple Cliff-brake. Phenology: Mar-Nov. Habitat: Outcrops of limestone and other rocks (usually either calcareous, subcalcareous, or mafic), rarely on masonry walls (Wieboldt 1995). Distribution: Widespread in e. North America, from NH, VT, NY, MN, SD, SK, and AB south to Panhandle FL, AL, TN, AR, TX, NM, AZ, Mexico, and Guatemala.

Origin/Endemic status: Native

Taxonomy Comments: This species is an apogamously-reproducing triploid, either an allopolyploid derived from the hybridization of a sexually-reproducing diploid species and sexually-reproducing tetraploid, or an autopolyploid of an undiscovered or extinct species. Gastony, Yatskievych, & Dixon (1992) provide convincing evidence that modern P. glabella is not one of the parental taxa, contrary to the suggestion by Lellinger (1985).

Synonymy ⓘ: = Ar, C, Can, ETx1, F, Fl1, FNA2, GrPl, Il, K4, Meso1, Mo1, NE, NS, NY, Pa, RAB, S13, Sf, Tn, Tx, TxFerns, Va, W, WH3, WV; Pteris atropurpurea L. = Hemionitis atropurpurea (L.) Christenh. — POWO, Christenhusz, Fay, & Byng (2018); = n/a — Tat; = Pellaea ×atropurpurea (L.) Link; = Pellaea atropurpurea (L.) Link var. atropurpurea — G. Basionym: Pteris atropurpurea L. 1753

Links to other floras: = Pellaea atropurpurea - FNA2

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Heliophily ⓘ: 5