North America Native Plant

Intermountain Indian Breadroot

Botanical name: Pediomelum megalanthum var. epipsilum

USDA symbol: PEMEE

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Pediomelum epipsilum (Barneby) S.L. Welsh (PEEP)  âš˜  Psoralea epipsila Barneby (PSEP)   

Intermountain Indian Breadroot: A Rare Native Treasure for Desert Gardens If you’re looking to add authentic native character to your southwestern garden, the Intermountain Indian breadroot (Pediomelum megalanthum var. epipsilum) might just be the hidden gem you’ve been searching for. This perennial forb represents a special piece of the American ...

Rare plant alert!

Region: Conservation status by state

Status: S4?T1: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘

Intermountain Indian Breadroot: A Rare Native Treasure for Desert Gardens

If you’re looking to add authentic native character to your southwestern garden, the Intermountain Indian breadroot (Pediomelum megalanthum var. epipsilum) might just be the hidden gem you’ve been searching for. This perennial forb represents a special piece of the American Southwest’s botanical heritage, though it comes with some important considerations for the conscientious gardener.

What Is Intermountain Indian Breadroot?

Intermountain Indian breadroot belongs to the legume family and is classified as a forb—essentially a non-woody plant that dies back to ground level each winter but returns from its roots each spring. You might also encounter this plant under its scientific synonyms, including Pediomelum epipsilum or Psoralea epipsila, if you’re digging through botanical references.

As its common name suggests, this plant has historical significance as a food source, with Indigenous peoples traditionally harvesting its nutritious root system—though we don’t recommend digging up your garden specimens for dinner!

Where Does It Call Home?

This native beauty has a rather exclusive address, naturally occurring only in Arizona and Utah. Its limited range makes it a true regional specialty that can add authentic local character to gardens within its native territory.

The Rarity Factor: Why This Matters

Here’s where things get important for responsible gardeners. Intermountain Indian breadroot carries a Global Conservation Status of S4?T1, which indicates some level of conservation concern. While the exact classification seems undefined, this suggests the plant may be uncommon in the wild.

What this means for you: If you choose to grow this native plant, make absolutely sure you’re sourcing it responsibly. Never collect from wild populations, and only purchase from reputable native plant nurseries that propagate their stock rather than wild-harvesting.

Growing Intermountain Indian Breadroot

Unfortunately, specific growing requirements for this particular variety aren’t well-documented in available sources. However, based on its native habitat and related species, here’s what we can reasonably expect:

  • Climate: Adapted to arid southwestern conditions
  • Soil: Likely prefers well-draining, rocky or sandy soils typical of desert regions
  • Water: Probably drought-tolerant once established, requiring minimal supplemental irrigation
  • Sun exposure: Most desert natives thrive in full sun conditions

Is This Plant Right for Your Garden?

Intermountain Indian breadroot could be an excellent choice if you’re:

  • Located within its native range (Arizona or Utah)
  • Creating a native plant or xeriscape garden
  • Interested in supporting local biodiversity
  • Committed to responsible sourcing practices

However, you might want to look elsewhere if you’re:

  • Outside its native range (consider other native alternatives instead)
  • Looking for a plant with well-documented care requirements
  • Wanting immediate availability from common garden centers

The Bottom Line

Intermountain Indian breadroot offers the chance to grow a genuine piece of southwestern heritage in your garden. Its rarity makes it a conversation starter and a meaningful contribution to native plant conservation—but only when sourced responsibly.

If you’re passionate about native gardening in Arizona or Utah and can locate ethically propagated plants, this perennial forb could become a treasured addition to your landscape. Just remember that choosing rare natives comes with the responsibility to be an ethical steward of these precious genetic resources.

Consider reaching out to local native plant societies or university extension offices for help locating reputable sources and getting more specific growing advice for your particular location within this plant’s range.

Intermountain Indian Breadroot

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Pediomelum Rydb. - Indian breadroot

Species

Pediomelum megalanthum (Wooton & Standl.) Rydb. - Intermountain Indian breadroot

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