North America Native Plant

White River Beardtongue

Botanical name: Penstemon scariosus var. albifluvis

USDA symbol: PESCA

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Penstemon albifluvis England (PEAL80)   

White River Beardtongue: A Rare Rocky Mountain Native Worth Knowing Meet the White River beardtongue (Penstemon scariosus var. albifluvis), a fascinating native wildflower that’s as elusive as it is beautiful. This perennial herb calls the rugged landscapes of Colorado and Utah home, where it quietly thrives in some pretty specific ...

Rare plant alert!

Region: Conservation status by state

Status: S4T1: 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) ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

White River Beardtongue: A Rare Rocky Mountain Native Worth Knowing

Meet the White River beardtongue (Penstemon scariosus var. albifluvis), a fascinating native wildflower that’s as elusive as it is beautiful. This perennial herb calls the rugged landscapes of Colorado and Utah home, where it quietly thrives in some pretty specific conditions. If you’re lucky enough to encounter this plant in the wild or are considering adding it to your native garden, there are some important things you should know first.

What Makes White River Beardtongue Special?

This charming native belongs to the penstemon family, those beloved wildflowers that bring such joy to western gardens. As a perennial forb, White River beardtongue lacks the woody stems of shrubs and trees, instead growing as a herbaceous plant that returns year after year from its root system.

You might also see this plant listed under its synonym, Penstemon albifluvis England, in older botanical references. But regardless of what name you find it under, you’re looking at a true native treasure.

Where Does It Call Home?

White River beardtongue has a pretty exclusive address – it’s only found growing naturally in Colorado and Utah. This limited range makes it a special find for native plant enthusiasts exploring the Rocky Mountain region.

A Word of Caution: Rarity Matters

Here’s where things get serious for a moment. White River beardtongue carries a Global Conservation Status of S4T1, which indicates this variety has conservation concerns. This rarity status means we need to be thoughtful stewards if we want to enjoy this plant in our gardens.

If you’re interested in growing White River beardtongue, please only source it responsibly:

  • Work with reputable native plant societies in Colorado or Utah
  • Never collect seeds or plants from wild populations
  • Look for nurseries that specialize in locally-sourced native plants
  • Consider participating in conservation efforts through botanical gardens or native plant groups

Growing Tips and Considerations

Unfortunately, specific growing information for this particular variety is limited in readily available sources. This is actually pretty common with rare native plants – they often haven’t been studied as extensively as their more common cousins.

If you’re serious about growing White River beardtongue, your best bet is to connect with local native plant societies, botanical gardens, or extension offices in Colorado and Utah. These folks often have the most current knowledge about propagation, growing conditions, and care requirements for rare regional natives.

The Bottom Line

White River beardtongue represents something special in the world of native plants – a rare variety that deserves our respect and protection. While it might not be the easiest plant to find or grow, its rarity makes it all the more precious for those dedicated to preserving our native plant heritage.

If you’re drawn to this unique beardtongue, approach it with patience and responsibility. Connect with conservation-minded growers, support native plant research, and remember that sometimes the most valuable plants are the ones we help protect rather than simply possess.

In the meantime, there are many other beautiful and more readily available penstemon species that can bring similar charm to your native garden while you work on building connections with the conservation community. Every native plant we grow – rare or common – is a step toward supporting our local ecosystems and the wildlife that depends on them.

White River Beardtongue

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Penstemon Schmidel - beardtongue

Species

Penstemon scariosus Pennell - White River beardtongue

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