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Flora of Scotts Creek Watershed

Grouping Upperside Underside1 Underside2

Pentagramma triangularis - Goldback Fern

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Family Name: Pteridaceae

Common Names: Goldback Fern, Goldenback Fern, Silverback Fern

Origin: Native to California

Habitat: Rocky areas and in crevices, shaded slopes, drier sites. Below 2300 m.

Life Form and Duration: Perennial Fern, 6-40 cm

Comments on overall growth: Many erect fronds clustered together. Rhizomatous, rhizomes short, densely covered with blackish scales, 3-5 mm wide, ascending at tips.

Foliage Description: Fronds with long stipes (stalks) that are thin and wiry, smooth, shiny, red brown when young aging to blackish, generally twice as long as the blades. Fronds are triangular shaped, 1-2 times pinnate, 3-10 cm long, upper surface pale to dark green. Lower surface powdery yellow due to dense coating of yellow exudate (farina). Fronds shrivel up during dry periods.

Indusia and Sori Description: Sporangia are scatted along veins, lacks covering indusia.

Spore Production: June-August

Other Comments: Fronds can be slapped against your jeans or other dark material to leave a golden print.