Cheilanthes cooperae

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Cheilanthes cooperae

Vulnerable (NatureServe)
Scientific classification e
Kingdom: Plantae
Division: Pteridophyta
Class: Polypodiopsida/Pteridopsida
Order: Polypodiales
Family: Pteridaceae
Genus: Cheilanthes
Species: C. cooperae
Binomial name
Cheilanthes cooperae

Myriopteris cooperae − (D. C. Eaton) Grusz & Windham

Cheilanthes cooperae, reclassified as Myriopteris cooperae,[1] is a species of lip fern known by the common name Mrs. Cooper's lip fern, or simply Cooper's lip fern.

It is endemic to California, where it is widespread but not very common. It can be found growing in crevices in rocky habitat, generally on limestone, in chaparral and other habitats.


The fern's leaves are up to about 30 centimeters long and a few wide, and are made up of segments subdivided into pairs of many-lobed smaller segments. They are pale green in color with glandular hairs.

The smallest segments are oval in shape and have sori with tan-colored sporangia on their undersides.

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