North America Non-native Plant

Psorothamnus Emoryi Var. Arenarius

Botanical name: Psorothamnus emoryi var. arenarius

USDA symbol: PSEMA

Native status: Not native but doesn't reproduce and persist in the wild

Psorothamnus emoryi var. arenarius: A Mysterious Desert Native If you’re a native plant enthusiast always on the hunt for something truly unique, you might have stumbled across the scientific name Psorothamnus emoryi var. arenarius. This particular variety is quite the enigma in the gardening world – so much so that ...

Psorothamnus emoryi var. arenarius: A Mysterious Desert Native

If you’re a native plant enthusiast always on the hunt for something truly unique, you might have stumbled across the scientific name Psorothamnus emoryi var. arenarius. This particular variety is quite the enigma in the gardening world – so much so that even its common name seems to have gotten lost in the desert winds!

What We Know (And Don’t Know)

Here’s where things get interesting: Psorothamnus emoryi var. arenarius is one of those plants that botanists know exists, but detailed information about this specific variety is surprisingly scarce. What we do know is that it belongs to the Psorothamnus genus, which includes several desert-dwelling shrubs native to the southwestern United States.

The genus name itself gives us a clue – Psorothamnus plants are typically adapted to arid conditions and are part of the pea family (Fabaceae). The arenarius part of the name suggests a connection to sandy soils, which makes perfect sense for a desert native.

Geographic Distribution

While specific distribution data for this variety is limited, members of the Psorothamnus emoryi group are generally found in the desert regions of the southwestern United States. Think Arizona, California, and Nevada – places where the sun shines bright and water is precious.

Should You Grow It?

Here’s the honest truth: with such limited information available about this specific variety, it’s tough to give you a definitive answer. If you’re lucky enough to find seeds or plants of Psorothamnus emoryi var. arenarius from a reputable native plant source, you’d be growing something truly special – perhaps even contributing to our understanding of this mysterious plant!

However, if you’re drawn to the idea of growing desert natives from the Psorothamnus family, you might want to consider better-documented relatives that offer similar ecological benefits with more reliable growing information.

Growing Conditions (Best Guess)

Based on what we know about the genus, if you do decide to try growing this plant, here’s what it would likely prefer:

  • Full sun exposure
  • Well-draining, sandy soils
  • Minimal water once established
  • Hot, dry conditions
  • Protection from excessive moisture

The Bottom Line

Psorothamnus emoryi var. arenarius represents one of those fascinating gaps in our horticultural knowledge. While we can make educated guesses about its needs based on its botanical family and name clues, specific growing information remains elusive.

If you’re passionate about rare natives and don’t mind a gardening adventure with uncertain outcomes, this could be your plant. Just make sure any material you acquire comes from responsible sources, and consider it an experiment rather than a sure thing.

For most gardeners interested in supporting desert ecosystems, sticking with well-documented native alternatives might be the wiser choice – at least until someone writes the definitive guide to growing this mysterious desert dweller!

Psorothamnus Emoryi Var. Arenarius

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

Psorothamnus Rydb. - dalea

Species

Psorothamnus emoryi (A. Gray) Rydb. - dyebush

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