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Brake Fern
Pteris multifida
γ€γγ’γγ½γ¦
An evergreen fern growing along roadsides, stone walls, and around wells. Sori are arranged in continuous marginal bands along the edges of the pinnately compound fronds. Pteridaceae is one of the largest fern families in the world, with great morphological diversity.
Identification Points
- βSori form a continuous line along the pinna margins (marginal type)
- βFertile frond pinnae are narrower and longer than sterile ones
- βEvergreen; forms colonies on stone walls and cliffs
Habitat
Stone walls, cliffs, roadsides, and around wells
Season
Year-round; spores produced in summerβautumn
3D Specimen Model
Kyushu University, Shikano Lab (CC0)
View on SketchfabβMorphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Compound
Venation
Pinnate
Leaf margin
Entire
Leaf shape
Linear
Growth form
Herb
Phylogenetic Positionγ€γγ’γγ½γ¦η§ β
Phylogenetic Position
Vascular plants > Polypodiophyta > Polypodiopsida > Polypodiales > Pteridaceae
Divergence Era
Cretaceous (ca. 100 million years agoβ)
Evolution Notes
Pteridaceae is among the most species-rich fern families, with notable adaptation to rocky and stone wall environments.
View on evolution timeline βSources & References
AI-generated, needs verification