North America Non-native Plant

Tephrosia Richardsiae

Botanical name: Tephrosia richardsiae

USDA symbol: TERI2

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

Tephrosia richardsiae: A Mysterious Native Plant Worth Investigating If you’ve stumbled upon the name Tephrosia richardsiae while researching native plants, you’re not alone in finding yourself scratching your head. This particular plant species is something of a botanical mystery, with very limited information available in standard plant databases and scientific ...

Tephrosia richardsiae: A Mysterious Native Plant Worth Investigating

If you’ve stumbled upon the name Tephrosia richardsiae while researching native plants, you’re not alone in finding yourself scratching your head. This particular plant species is something of a botanical mystery, with very limited information available in standard plant databases and scientific literature.

What We Know (And Don’t Know)

Tephrosia richardsiae belongs to the genus Tephrosia, which is part of the legume family (Fabaceae). However, finding reliable information about this specific species proves challenging. Unlike its better-known cousins in the Tephrosia genus, richardsiae doesn’t appear in major botanical references or horticultural guides.

Here’s what we’re dealing with:

  • No widely recognized common name
  • Unclear native range and distribution
  • Unknown growing requirements
  • Uncertain availability in the nursery trade

The Tephrosia Family Connection

While we can’t provide specific details about Tephrosia richardsiae, we do know that the Tephrosia genus includes some wonderful native plants. Many Tephrosia species are known for their attractive pea-like flowers, ability to fix nitrogen in the soil, and value to pollinators and wildlife.

A Word of Caution for Gardeners

If you’re considering adding Tephrosia richardsiae to your garden, proceed with extra caution. The lack of readily available information could mean several things:

  • It might be an extremely rare species
  • The name could be outdated or incorrect
  • It may be a regional name not widely recognized
  • It could be a recently described species with limited documentation

Better-Known Tephrosia Alternatives

Instead of hunting for the elusive Tephrosia richardsiae, consider these well-documented native Tephrosia species:

  • Tephrosia virginiana (Goat’s Rue) – A beautiful perennial with pink and yellow flowers
  • Tephrosia spicata (Spiked Hoary Pea) – Known for its distinctive flower spikes
  • Tephrosia florida (Florida Hoary Pea) – A southeastern native with lovely blooms

What Should You Do?

If you’re specifically interested in Tephrosia richardsiae, here are your best next steps:

  • Contact your local native plant society for guidance
  • Reach out to botanical experts at nearby universities
  • Consult with specialized native plant nurseries
  • Consider whether you might be looking for a different Tephrosia species

Remember, there are plenty of well-documented native plants that can provide the beauty, ecological benefits, and garden interest you’re seeking. Sometimes the most rewarding gardening adventures come from exploring the plants we can easily research and successfully grow!

The Bottom Line

While Tephrosia richardsiae remains a botanical puzzle, don’t let that discourage you from exploring the wonderful world of native Tephrosia species. Focus on the species with clear growing guidelines and proven track records in gardens. Your local ecosystem (and your gardening success rate) will thank you for it!

Tephrosia Richardsiae

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

Tephrosia Pers. - hoarypea

Species

Tephrosia richardsiae J.B. Gillett

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