North America Native Plant

Missouri Cliffbrake

Botanical name: Pellaea glabella missouriensis

USDA symbol: PEGLM

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Pellaea glabella Mett. ex Kuhn var. missouriensis Gastony (PEGLM2)   

Missouri Cliffbrake: A Rare Native Fern Worth Knowing Meet the Missouri cliffbrake (Pellaea glabella missouriensis), a fascinating native fern that’s as elusive as it is intriguing. If you’re a plant enthusiast who loves discovering botanical treasures hiding in plain sight, this little-known species might just capture your imagination. What Exactly ...

Rare plant alert!

Region: Conservation status by state

Status: S5T1T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Missouri Cliffbrake: A Rare Native Fern Worth Knowing

Meet the Missouri cliffbrake (Pellaea glabella missouriensis), a fascinating native fern that’s as elusive as it is intriguing. If you’re a plant enthusiast who loves discovering botanical treasures hiding in plain sight, this little-known species might just capture your imagination.

What Exactly is Missouri Cliffbrake?

The Missouri cliffbrake is a perennial fern native to the lower 48 states, though you’ll specifically find it calling Missouri home. This species belongs to the Pellaea genus, commonly known as cliffbrake ferns, and goes by the scientific name Pellaea glabella missouriensis. You might also see it referenced by its synonym, Pellaea glabella Mett. ex Kuhn var. missouriensis Gastony.

Where Does It Grow?

This native fern has a very limited geographical range, currently documented only in Missouri. Its restricted distribution makes it quite special – and quite rare.

A Word About Rarity

Here’s something important to know: Missouri cliffbrake has a Global Conservation Status of S5T1T2, which indicates it may be quite rare. If you’re lucky enough to encounter this fern in the wild, it’s crucial to appreciate it from a distance and never collect it without proper permits. If you’re interested in growing it, only seek out responsibly sourced material from reputable native plant nurseries.

Is Missouri Cliffbrake Beneficial for Gardens?

While we don’t have complete information about this fern’s specific growing requirements or garden performance, native ferns in general offer several benefits:

  • They add texture and visual interest to shaded areas
  • They support local ecosystems as part of the native plant community
  • They often require less maintenance than non-native alternatives once established
  • They provide habitat structure for small wildlife and beneficial insects

Given its rarity, Missouri cliffbrake would be more of a conservation curiosity than a typical garden plant. It’s the kind of species that appeals to collectors of rare natives and those passionate about preserving local biodiversity.

How to Identify Missouri Cliffbrake

As a member of the cliffbrake family, this fern likely shares characteristics common to its relatives, though specific identification details for this particular subspecies aren’t widely documented. If you think you’ve spotted one in Missouri, consider reaching out to local botanists or native plant societies for proper identification – you might have found something quite special!

The Bottom Line

Missouri cliffbrake represents the kind of botanical treasure that makes native plant exploration so exciting. While it’s not a plant you’ll likely encounter at your local garden center, knowing about it enriches our understanding of Missouri’s native flora. If you’re interested in supporting rare native species, consider getting involved with local conservation groups or native plant societies – they often work to protect and study species like this remarkable little fern.

Remember, the best way to appreciate rare plants like Missouri cliffbrake is through observation, photography, and supporting conservation efforts rather than collection. Every rare native species plays a vital role in maintaining the delicate balance of our local ecosystems.

Missouri Cliffbrake

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Pteridaceae E.D.M. Kirchn. - Maidenhair Fern family

Genus

Pellaea Link - cliffbrake

Species

Pellaea glabella Mett. ex Kuhn - smooth cliffbrake

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA