Pteridium latiusculum (Desvaux) Hieronymus ex Fries. Common name: Eastern Bracken. Phenology: Jul-Sep. Habitat: Mainly in dry woodlands, forests, and heath balds, up to 1600 m in elevation. Distribution: NL (Newfoundland) west to MB, south to Panhandle FL, TX, and n. Mexico.

Origin/Endemic status: Native

Taxonomy Comments: The circumscription of the "latiusculum entity" follows Thomson, Mickel, & Mehltreter (2008) in excluding Old World material included by many earlier authors. The relationship of the ‘latiusculum’ and ‘pseudocaudatum’ entities is discussed in detail by Speer & Hilu (1999) and Speer, Werth, & Hilu (1999).

Synonymy ⓘ: Pteris latiuscula Desv.; = Pteridium aquilinum (L.) Kuhn ssp. latiusculum (Desv.) Hultén — Can, NE, NY, Va, Thomson, Mickel, & Mehltreter (2008), Zhou et al (2014); = Pteridium aquilinum (L.) Kuhn var. latiusculum (Desv.) Underw. ex A.Heller — Pa; = Pteridium latiusculum ssp. latiusculum — POWO; = Pteris latiuscula Desv. var. latiuscula — Sf; < Pteridium aquilinum (L.) Kuhn var. aquilinum — S13; > Pteridium aquilinum var. champlainense Boivin — NS; < Pteridium aquilinum (L.) Kuhn var. latiusculum (Desv.) Underw. ex A.Heller — Ar, C, F, Fl1, FNA2, G, GrPl, Il, K4, Mo1, RAB, Tat, W, WH3, WV, Lin et al (2013), Speer & Hilu (1998); > Pteridium aquilinum (L.) Kuhn var. latiusculum (Desv.) Underw. ex A.Heller — NS; < Pteris aquilinum L. — Tn

Links to other floras: < Pteridium aquilinum var. latiusculum - FNA2

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Heliophily ⓘ: 6