SafePlants

Argyrochosma: The False Cloak Fern

Argyrochosma is a genus of ferns, commonly known as false cloak ferns. These ferns belong to the Cheilanthoideae subfamily within the Pteridaceae family (Maidenhair Fern Family).

Considerations for Pets

• The text mentions that some ferns, like Cheilanthes sinuata, have curled segments, and others, such as Argyrochosma limitanea and Pellaea spp., have thick, rolled leaf margins.

Taxonomy and Nomenclature

• Genus: Argyrochosma
• Family: Pteridaceae (Maidenhair Fern Family)
• Subfamily: Cheilanthoideae
• Synonyms/Alternative Names:
  • Notholaena fendleri (for Argyrochosma fendleri)

Common Species and Names

• Argyrochosma dealbata: False Cloak Fern, Powdery Cloak Fern, Powdery False Cloak Fern
• Argyrochosma jonesii: Jones' False Cloak Fern
• Argyrochosma limitanea: Southwestern False Cloak Fern
• Argyrochosma microphylla: Small-leaf False Cloak Fern
• Argyrochosma fendleri: Fendler's False Cloak Fern

Distribution and Habitat

• These ferns are often found in the southwestern deserts of the United States.
• Specific locations mentioned include:
  • Coronado National Memorial
  • Waterman Mtns, Ironwood Forest NM, Pima Co., Arizona
  • Joshua Tree Woodland, Pinyon-Juniper Woodland

Morphological Characteristics and Growth Habits

• They are described as small tufted ferns growing from conspicuously scaly rhizomes.
• Leaves can range from 4-15 cm long with a rachis of 3-10 cm.

Ecological Role

• The genus includes xeric-adapted (dry environment) species.

Etymology

• The name *cloak fern* comes from Greek words *notho* (false) and *chlaena* (coat), referring to the reflexed leaf segment margins that form false indusia.

Further Information

• Dave's Garden
• Discover Life
• USDA-NRCS PLANTS Database
• Arizona Sonora Desert Museum