North America Native Plant

Smoothleaf Beardtongue

Botanical name: Penstemon leiophyllus var. franciscipennellii

USDA symbol: PELEF

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Penstemon francisci-pennellii Crosswh. (PEFR7)   

Smoothleaf Beardtongue: A Rare Nevada Native Worth Knowing If you’re a gardener who loves supporting rare native plants, let me introduce you to smoothleaf beardtongue (Penstemon leiophyllus var. franciscipennellii). This little-known perennial herb might not be the flashiest plant in your garden center, but it has something special going for ...

Rare plant alert!

Region: Conservation status by state

Status: S3T2: Status is uncertain but is somewhere between the following rankings: 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) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Smoothleaf Beardtongue: A Rare Nevada Native Worth Knowing

If you’re a gardener who loves supporting rare native plants, let me introduce you to smoothleaf beardtongue (Penstemon leiophyllus var. franciscipennellii). This little-known perennial herb might not be the flashiest plant in your garden center, but it has something special going for it – it’s a true Nevada native that deserves our attention and care.

What Makes This Plant Special

Smoothleaf beardtongue belongs to the beloved Penstemon family, those reliable workhorses of western gardens. As a perennial forb herb, it lacks the woody stems of shrubs and trees, instead growing from buds at or below ground level. You might also see it listed under its synonym, Penstemon francisci-pennellii, but don’t let the fancy Latin fool you – it’s the same plant.

Where You’ll Find It Growing Wild

This particular variety calls Nevada home and only Nevada. It’s what botanists call an endemic species, meaning it evolved in this specific region and isn’t found naturally anywhere else in the world. That’s pretty amazing when you think about it – Nevada has its very own special beardtongue variety!

The Rarity Factor: Why This Matters

Here’s where things get interesting (and important). Smoothleaf beardtongue carries a Global Conservation Status of S3T2, which puts it in the rare to uncommon category. This isn’t just botanical trivia – it means this plant needs our help to stick around for future generations.

If you’re considering adding this plant to your garden, I absolutely encourage it, but with one crucial caveat: make sure you’re getting your plants or seeds from a responsible source. Never collect from wild populations, and always buy from nurseries that propagate their own stock rather than wild-harvesting.

What We Know (And Don’t Know) About Growing It

I’ll be honest with you – information about the specific growing requirements for this variety is surprisingly scarce. Like many rare native plants, it hasn’t made it into mainstream horticultural references. What we do know is that it’s a perennial, so once established, it should return year after year.

Based on its Nevada origins and membership in the Penstemon family, it likely appreciates:

  • Well-draining soil (most Penstemons hate wet feet)
  • Full sun to partial shade
  • Low to moderate water once established
  • Rocky or sandy soil conditions

The Pollinator Question

While I don’t have specific data on which pollinators visit this particular variety, Penstemons as a group are fantastic pollinator plants. They’re especially beloved by bees, hummingbirds, and butterflies. Given that this is a Nevada native, it’s likely co-evolved with local pollinators and could be an important food source for native insects.

Should You Plant It?

If you’re a Nevada gardener interested in supporting local biodiversity and you can source this plant responsibly, I say go for it! Growing rare native plants in cultivation can actually help preserve genetic diversity and provide a backup population if wild numbers decline.

However, if you’re looking for a more readily available alternative, consider other Nevada-native Penstemons that are easier to find and better documented. They’ll give you similar benefits with less uncertainty.

The Bottom Line

Smoothleaf beardtongue represents the kind of plant that makes native gardening both challenging and rewarding. We may not know everything about growing it, but we know it’s special, it’s ours to protect, and it deserves a place in thoughtful native gardens. Just remember – with rare plants comes responsibility. Source ethically, and you’ll be doing your part to keep this Nevada treasure around for generations to come.

Smoothleaf 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 leiophyllus Pennell - smoothleaf beardtongue

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