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Southwestern false cloak fern

Argyrochosma limitanea

Also called Border Cloak Fern, Southwestern False Cloakfern, Southwestern Falsecloak Fern

Southwestern false cloak fern
Photo: Katja Schulz from Washington, D. C., USA, CC BY 2.0

A small, hardy desert fern from the southwestern US and northern Mexico that grows in rock crevices and on cliffs, usually on limestone. It needs sharp drainage and bright conditions, and is mainly grown by enthusiasts in rock gardens or pots.

Family
Pteridaceae (Maidenhair fern family)
Grows as
Fern
Light
Full sun, Part shade
Water
Water sparingly and let the rock-like mix dry out between waterings; avoid soggy roots.
Soil
Very gritty, fast-draining mix, ideally with some lime or crushed limestone.
Temperature
Tolerates cold well, to about -15 °C in its native range; avoid prolonged heat above about 35 °C without shade.
How easy
Moderate

About

Argyrochosma limitanea, the southwestern false cloak fern, is a species of fern native to the southwestern United States and Sonora, Mexico. It grows on calcareous rocks, and has small, finely-divided leaves with a leathery texture, dark axes connecting the leaf segments, and a heavy coating of white powder on the undersurface. It reproduces apogamously; two subspecies are recognized, which may have originated independently through the hybridization of other taxa not yet discovered. First described as a species in 1919, it was transferred to the new genus Argyrochosma in 1987.

Where it grows

Argyrochosma limitanea is known in the United States from San Bernardino County, California, east through Arizona, New Mexico, southern Utah and Colorado, and Trans-Pecos Texas, and south into northern Mexico, extending as far southeast as Hidalgo. A. limitanea subsp. limitanea ranges from California through Utah and Colorado and into Mexico only in Sonora and Chihuahua. A. limitanea subsp. mexicana has a more easterly range, from Arizona through Texas and in Mexico from Chihuahua and Sinaloa east.

Other Argyrochosma plants

Argyrochosma chilensis · Argyrochosma connectens · Powdery false cloak fern · Argyrochosma delicatula · Fendler's false cloak fern · Argyrochosma formosa · Hairy false cloak fern · Jones' false cloak fern · Argyrochosma lumholtzii · Small-leaf false cloak fern · Argyrochosma nivea · Argyrochosma pallens

Text excerpted from the Wikipedia article Argyrochosma limitanea by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

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