North America Non-native Plant

Lathyrus Szowitsii

Botanical name: Lathyrus szowitsii

USDA symbol: LASZ2

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

The Mystery of Lathyrus szowitsii: When Plant Information is Scarce Have you ever stumbled across a plant name that seems to exist in botanical limbo? Meet Lathyrus szowitsii, a member of the beloved pea family that’s proving to be quite the enigma in the gardening world. While we’d love to ...

The Mystery of Lathyrus szowitsii: When Plant Information is Scarce

Have you ever stumbled across a plant name that seems to exist in botanical limbo? Meet Lathyrus szowitsii, a member of the beloved pea family that’s proving to be quite the enigma in the gardening world. While we’d love to give you the full scoop on this particular species, the truth is that reliable information about L. szowitsii is surprisingly scarce.

What We Do Know

Lathyrus szowitsii belongs to the genus Lathyrus, which includes some garden favorites like sweet peas and wild vetchlings. These plants are typically climbing or trailing members of the pea family (Fabaceae), known for their distinctive butterfly-shaped flowers and ability to fix nitrogen in the soil.

The Challenge of Rare or Undocumented Species

Sometimes in the plant world, we encounter species that exist in scientific literature but lack the practical growing information that home gardeners need. This could be because:

  • The species is extremely rare or has a very limited natural range
  • It hasn’t been studied extensively for horticultural purposes
  • Seeds or plants aren’t readily available in the trade
  • It may be a synonym for another species with a different accepted name

Better-Known Lathyrus Alternatives

If you’re drawn to the Lathyrus genus, there are several well-documented native species that might scratch that same gardening itch:

  • Beach Pea (Lathyrus japonicus): A coastal native perfect for sandy soils and seaside gardens
  • Marsh Pea (Lathyrus palustris): Thrives in wetland conditions and prairie edges
  • Purple Pea (Lathyrus venosus): A woodland species with stunning purple flowers

What to Do When Information is Limited

Encountered a mysterious plant species yourself? Here’s what we recommend:

  • Consult local botanical experts or native plant societies
  • Check with university extension services in your area
  • Look for herbarium specimens that might provide habitat clues
  • Consider whether it might be a regional common name for a better-known species

The Bottom Line

While Lathyrus szowitsii remains a botanical mystery for now, the plant world is full of well-documented alternatives that can provide similar benefits to your garden. When in doubt, stick with native species that have proven track records and available growing information. Your local ecosystem (and your gardening success rate) will thank you!

Have you encountered mysterious plant names in your gardening journey? Sometimes the hunt for information is half the fun of being a plant enthusiast!

Lathyrus Szowitsii

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 szowitsii Boiss.

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