North America Non-native Plant

Arachis Rigonii

Botanical name: Arachis rigonii

USDA symbol: ARRI8

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

Arachis rigonii: The Mystery Plant That Has Botanists Scratching Their Heads If you’ve stumbled upon the name Arachis rigonii in your plant research, you’re not alone in wondering what exactly this species is all about. This member of the peanut family (yes, the same family that gives us those crunchy ...

Arachis rigonii: The Mystery Plant That Has Botanists Scratching Their Heads

If you’ve stumbled upon the name Arachis rigonii in your plant research, you’re not alone in wondering what exactly this species is all about. This member of the peanut family (yes, the same family that gives us those crunchy snacks!) is one of botany’s more elusive characters, and for good reason.

What We Know (And Don’t Know) About Arachis rigonii

Here’s the thing about Arachis rigonii – it’s what we might call a botanical mystery. While it belongs to the Arachis genus, which includes the common peanut and several wild relatives, reliable information about this particular species is surprisingly scarce. This could mean it’s extremely rare, poorly studied, or possibly even a name that’s been misapplied in botanical literature.

The Challenge for Gardeners

For home gardeners looking to add native plants to their landscapes, Arachis rigonii presents a unique challenge. Without clear information about:

  • Where it naturally occurs
  • What growing conditions it prefers
  • How large it gets
  • What it looks like
  • Whether it’s actually available in cultivation

It’s nearly impossible to recommend this plant for your garden with any confidence.

What This Means for Your Garden Plans

If you’re interested in plants from the Arachis genus, you might want to consider better-documented alternatives. The genus does include some fascinating species that are occasionally grown by specialty gardeners and researchers, but these typically require very specific conditions and aren’t widely available in the nursery trade.

A Word of Caution

When you encounter plant names with so little available information, it’s worth being extra cautious. Always:

  • Verify plant identification through multiple reliable sources
  • Check with local native plant societies or botanical gardens
  • Consider whether the plant is actually available from reputable sources
  • Look into well-documented native alternatives for your region

The Bottom Line

While Arachis rigonii might sound intriguing, the lack of reliable information makes it a poor choice for most gardeners. Instead of chasing botanical ghosts, focus your energy on well-documented native plants that will thrive in your specific location and provide known benefits to local wildlife and ecosystems.

Sometimes the most responsible thing a gardener can do is admit when we simply don’t have enough information to make a good recommendation – and this appears to be one of those times!

Arachis Rigonii

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

Arachis L. - peanut

Species

Arachis rigonii Krapov. & W.C. Greg.

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