North America Non-native Plant

Vicia Incisa

Botanical name: Vicia incisa

USDA symbol: VIIN10

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

Synonyms: Vicia incisiformis Stef., nom. inval. (VIIN5)   

Vicia incisa: The Mystery Vetch Worth Investigating If you’ve stumbled across the name Vicia incisa in your plant research, you’re not alone in feeling a bit puzzled. This member of the pea family (Fabaceae) is one of those botanical mysteries that keeps plant enthusiasts scratching their heads – not because ...

Vicia incisa: The Mystery Vetch Worth Investigating

If you’ve stumbled across the name Vicia incisa in your plant research, you’re not alone in feeling a bit puzzled. This member of the pea family (Fabaceae) is one of those botanical mysteries that keeps plant enthusiasts scratching their heads – not because it’s particularly complex, but because reliable information about it is surprisingly scarce.

What We Know About Vicia incisa

Vicia incisa belongs to the vetch genus, a group of plants known for their climbing or trailing habits and their ability to fix nitrogen in the soil. Like other vetches, this species likely produces the characteristic pea-like flowers and compound leaves that make the genus recognizable to gardeners familiar with legumes.

The plant has at least one recorded synonym: Vicia incisiformis Stef., though this name is considered invalid in botanical nomenclature. This suggests that there has been some taxonomic confusion or revision in the plant’s classification history.

The Information Gap

Here’s where things get interesting (and frustrating): despite being a named species, Vicia incisa appears to be poorly documented in horticultural and even some botanical literature. We don’t have clear information about:

  • Its native range or geographical distribution
  • Common names used by gardeners or local communities
  • Specific growing requirements or hardiness zones
  • Its status as native, naturalized, or potentially invasive in various regions
  • Detailed descriptions of its appearance or growth habits

This lack of readily available information could mean several things: the species might be extremely rare, geographically limited, or possibly confused with other Vicia species in cultivation and research.

Should You Try Growing Vicia incisa?

Given the uncertainty surrounding this plant, we’d recommend proceeding with caution. If you’re interested in growing vetches, there are many well-documented Vicia species that would be safer bets for your garden. Consider researching native vetch species in your area first – they’ll provide similar benefits with the added bonus of supporting local ecosystems.

If you do encounter Vicia incisa through specialty seed sources or botanical exchanges, make sure to:

  • Verify the source and authenticity of the plant material
  • Research whether it’s appropriate for your local ecosystem
  • Start with a small trial planting to observe its behavior
  • Monitor for any aggressive spreading or self-seeding

Alternative Vetch Options

While Vicia incisa remains a botanical puzzle, the vetch genus offers many wonderful, well-documented options for gardeners. Look into native species like American vetch (Vicia americana) if you’re in North America, or common vetch (Vicia sativa) for areas where it’s appropriate. These alternatives will give you the nitrogen-fixing benefits, attractive flowers, and wildlife value that make vetches appealing garden plants.

The Takeaway

Vicia incisa serves as a reminder that even in our well-connected, information-rich world, some plants remain botanical mysteries. Whether this species is genuinely rare, geographically restricted, or simply understudied, it highlights the importance of thorough research before adding any plant to your garden. When in doubt, stick with well-documented native species that you know will thrive in your conditions and support your local ecosystem.

Have you encountered Vicia incisa in your gardening adventures? We’d love to hear about your experiences with this elusive species!

Vicia Incisa

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

Vicia L. - vetch

Species

Vicia incisa M. Bieb.

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