North America Non-native Plant

Lathyrus Chloranthus

Botanical name: Lathyrus chloranthus

USDA symbol: LACH7

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

Lathyrus chloranthus: The Elusive Native Pea If you’ve stumbled across the name Lathyrus chloranthus in your native plant research, you’re not alone in wondering what exactly this mysterious member of the pea family is all about. This little-known species belongs to the same genus as sweet peas and wild peas, ...

Lathyrus chloranthus: The Elusive Native Pea

If you’ve stumbled across the name Lathyrus chloranthus in your native plant research, you’re not alone in wondering what exactly this mysterious member of the pea family is all about. This little-known species belongs to the same genus as sweet peas and wild peas, but finding detailed information about it can feel like searching for a needle in a haystack.

What We Know (And Don’t Know)

Lathyrus chloranthus is part of the large and diverse pea family (Fabaceae), which includes everything from garden peas to wild lupines. The name chloranthus hints at green or yellowish flowers, typical of botanical naming conventions. However, detailed descriptions of this particular species are surprisingly scarce in both scientific literature and horticultural resources.

Like other members of the Lathyrus genus, this plant is likely a climbing or trailing vine with the characteristic compound leaves and tendrils that help it scramble over other vegetation. Most Lathyrus species produce small, pea-like flowers followed by seed pods.

The Geographic Mystery

The exact native range and distribution of Lathyrus chloranthus remains unclear from available sources. Some references suggest associations with western North America, but specific geographic details are limited.

Should You Grow It?

Here’s where things get tricky. With so little information available about Lathyrus chloranthus, including its growing requirements, native status, and garden performance, it’s difficult to recommend it for home gardens. The lack of readily available seeds or plants also makes it an impractical choice for most gardeners.

Better Alternatives for Your Garden

If you’re drawn to native pea family plants, consider these well-documented alternatives:

  • Wild Lupine (Lupinus perennis): A stunning native with blue flower spikes
  • Partridge Pea (Chamaecrista fasciculata): Bright yellow flowers and interesting seed pods
  • Wild Senna (Senna hebecarpa): Tall native with golden flowers
  • Beach Pea (Lathyrus japonicus): A well-known coastal native if you’re in the right region

The Takeaway

Sometimes in the world of native plants, we encounter species like Lathyrus chloranthus that remain tantalizingly mysterious. While we can’t provide a comprehensive growing guide for this particular plant, its very existence reminds us of the incredible diversity within our native flora—much of which still awaits detailed study and documentation.

If you’re passionate about native plants, focus your energy on the many well-documented species that will thrive in your garden and support local ecosystems. Save the botanical detective work for the researchers, and let your garden be a celebration of the native plants we know and love!

Lathyrus Chloranthus

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

Lathyrus L. - pea

Species

Lathyrus chloranthus Boiss.

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