North America Non-native Plant

Lathyrus Roseus

Botanical name: Lathyrus roseus

USDA symbol: LARO2

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

Lathyrus roseus: A Mysterious Member of the Pea Family If you’ve stumbled upon the name Lathyrus roseus in your gardening research, you might be scratching your head wondering what exactly this plant is. You’re not alone! This particular species name presents quite the botanical puzzle that’s worth exploring. The Mystery ...

Lathyrus roseus: A Mysterious Member of the Pea Family

If you’ve stumbled upon the name Lathyrus roseus in your gardening research, you might be scratching your head wondering what exactly this plant is. You’re not alone! This particular species name presents quite the botanical puzzle that’s worth exploring.

The Mystery Behind the Name

Lathyrus roseus belongs to the Lathyrus genus, which includes the beloved sweet peas and various wild peas and vetchlings. The species name roseus suggests a pink or rose-colored flower, which would fit perfectly with the ornamental appeal typical of this plant family. However, here’s where things get interesting – this specific combination doesn’t appear in most standard botanical references or plant databases.

What This Might Mean for Gardeners

When a plant name is difficult to verify, it could indicate several possibilities:

  • The plant might be known by a different, more current scientific name
  • It could be a regional or local name that hasn’t gained widespread recognition
  • The name might refer to a cultivar or variety rather than a distinct species
  • There may have been a misidentification or transcription error

Exploring Lathyrus Alternatives

If you’re interested in growing plants from the Lathyrus genus, there are many well-documented native and non-native options to consider. The genus includes both annual and perennial species, many of which offer beautiful flowers and can provide habitat for pollinators.

Before selecting any Lathyrus species for your garden, it’s important to research the specific plant’s native range, growing requirements, and potential invasiveness in your area. Some members of this genus can be aggressive spreaders, while others make excellent garden companions.

A Word of Caution

When encountering unfamiliar or hard-to-verify plant names, it’s always wise to consult with local native plant societies, extension services, or botanical experts. They can help you identify what you’re actually looking at and suggest appropriate alternatives that will thrive in your specific growing conditions.

The Bottom Line

While the mystery of Lathyrus roseus remains unsolved, this serves as a good reminder of the importance of using reliable sources when selecting plants for our gardens. If you’re drawn to the idea of rose-colored flowers in the pea family, consider exploring well-documented Lathyrus species or consulting with local gardening experts who can point you toward similar plants that are proven performers in your area.

Remember, successful gardening often starts with choosing the right plant with a clear identity – and sometimes that means solving a few botanical mysteries along the way!

Lathyrus Roseus

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 roseus Steven

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