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Pteridium arachnoideum

Pteridium arachnoideum (Kaulf.) Maxon

Pteridium aquilinum (L.) Kuhn var. arachnoideum (Kaulf.) Brade

Bracken Fern

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionPteridophytaFerns
ClassFilicopsida“Leptosporangiate” (has to do with how their spores form) ferns—includes most ferns
OrderPolypodialesPolypod ferns
FamilyDennstaedtiaceaeAfter August William Dennstedt (1776-1826), German physician and botanist, burgomaster of Magdala, director of the Belvedere garden near Weimar, and author of a work entitled Hortus Belvedereanus, a compilation of some 1500 plants. I have no information as to why the family name is spelled differently than his name
GenusPteridiumA diminutive of Pteris, a fern genus
SpeciesarachnoideumResembling a spider

About plant names...

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Pteridium arachnoideum description by Thomas H. Kent, last updated 3 Oct 2011.

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Pteridium arachnoideum (Bracken Fern)

The ferns are all aligned in the same direction. This wasn’t the direction of sunlight, but it is probably the average direction of the most light. · 6/18/2016 · Pearl Hill State Park, Ashby, MA

Pteridium arachnoideum (Bracken Fern)

9/18/2009 · Acadia National Park, Bar Harbor, ME
≈ 4 × 2½' (1.2 × 0.8 m) ID is uncertain

Pteridium arachnoideum (Bracken Fern)

9/14/2009 · Near Nashoba Hospital, Ayer, MA
≈ 21 × 14" (52 × 34 cm) ID is uncertain

Pteridium arachnoideum (Bracken Fern)

9/14/2009 · Near Nashoba Hospital, Ayer, MA
≈ 21 × 14" (52 × 34 cm) ID is uncertain