North America Non-native Plant

Eriosema Jurionianum

Botanical name: Eriosema jurionianum

USDA symbol: ERJU2

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

Synonyms: Eriosema polystachyum Baker, nom. illeg. (ERPO13)   

Eriosema jurionianum: A Mysterious Member of the Legume Family If you’ve stumbled upon the name Eriosema jurionianum in your botanical wanderings, you’ve discovered one of gardening’s more enigmatic characters. This leguminous plant sits quietly in the shadows of the better-known members of the pea family, keeping most of its secrets ...

Eriosema jurionianum: A Mysterious Member of the Legume Family

If you’ve stumbled upon the name Eriosema jurionianum in your botanical wanderings, you’ve discovered one of gardening’s more enigmatic characters. This leguminous plant sits quietly in the shadows of the better-known members of the pea family, keeping most of its secrets to itself.

What We Know (And What We Don’t)

Eriosema jurionianum belongs to the Fabaceae family – that’s the pea and bean clan that gardeners love for their soil-improving nitrogen-fixing abilities. Like a plant playing hard to get, this species has managed to keep most of its details under wraps. We know it has gone by the synonym Eriosema polystachyum Baker in the past, but beyond its botanical classification, reliable information about this plant is surprisingly scarce.

The Challenge of Growing the Unknown

Here’s where things get tricky for us gardening enthusiasts. Without clear information about Eriosema jurionianum’s native range, growing requirements, or garden performance, recommending it becomes a bit like suggesting someone adopt a mystery pet. We simply don’t have enough reliable data about:

  • Where it naturally grows
  • What conditions it prefers
  • How big it gets or what it looks like
  • Whether it’s rare, common, or somewhere in between
  • Its hardiness zones or climate preferences

A Word of Caution

When encountering plants with limited documented information, it’s wise to proceed with caution. The lack of readily available horticultural information could indicate several possibilities: the plant might be extremely rare, geographically restricted, difficult to cultivate, or simply hasn’t been studied extensively for garden use.

What’s a Gardener to Do?

If you’re drawn to unique legumes for your garden, consider exploring better-documented native species in the Fabaceae family that are known to thrive in cultivation. Many native beans, vetches, and other leguminous plants offer the nitrogen-fixing benefits and often spectacular flowers that make this plant family so appealing to gardeners.

Before seeking out any Eriosema species, do your homework on local native plant societies and botanical institutions. They might have insights into whether this particular species occurs in your region and what its conservation status might be.

The Bottom Line

Eriosema jurionianum remains one of those botanical mysteries that reminds us how much we still don’t know about the plant kingdom. While its elusive nature might intrigue the plant collector in all of us, sometimes the most responsible choice is to admire from afar and focus our gardening energy on well-understood native species that we know will thrive and support local ecosystems.

After all, there are plenty of amazing native legumes waiting to surprise and delight you – ones that come with actual growing instructions!

Eriosema Jurionianum

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

Eriosema (DC.) D. Don - sand pea

Species

Eriosema jurionianum Staner & De Craene

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