North America Non-native Plant

Erythrina

Botanical name: Erythrina subumbrans

USDA symbol: ERSU15

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

Synonyms: Erythrina lithosperma Miq. (ERLI7)   

Erythrina: The Mysterious Coral Tree Species If you’ve stumbled across the name Erythrina subumbrans in your plant research adventures, you’re not alone in scratching your head. This member of the coral tree family is something of a botanical mystery, with limited information available even in specialized plant databases. What We ...

Erythrina: The Mysterious Coral Tree Species

If you’ve stumbled across the name Erythrina subumbrans in your plant research adventures, you’re not alone in scratching your head. This member of the coral tree family is something of a botanical mystery, with limited information available even in specialized plant databases.

What We Know About This Erythrina

Erythrina subumbrans belongs to the fascinating genus of coral trees, plants known for their stunning red or orange flowers that often resemble coral formations. The species has at least one recorded synonym: Erythrina lithosperma Miq., which suggests it may have been reclassified or renamed at some point in botanical history.

However, here’s where things get tricky – detailed information about this specific species is remarkably scarce. Unlike its more famous cousins in the Erythrina family, E. subumbrans seems to fly under the radar in most gardening and botanical literature.

The Information Gap

Unfortunately, we’re missing some pretty crucial details about this plant:

  • Native range and geographical distribution
  • Growth habits and mature size
  • Preferred growing conditions
  • Hardiness zones
  • Invasive or conservation status
  • Specific care requirements

Should You Plant It?

Here’s our honest take: without knowing the native status, potential invasiveness, or basic growing requirements of Erythrina subumbrans, we’d recommend proceeding with extreme caution – or better yet, choosing a different plant altogether.

If you’re drawn to the coral tree family, consider researching well-documented Erythrina species that are appropriate for your region. Many coral trees are spectacular landscape plants when grown in suitable climates, but they need to be chosen carefully based on your local growing conditions and environmental impact.

Alternative Approaches

Instead of taking a gamble on this mysterious species, we suggest:

  • Consulting with local botanical gardens or universities that might have more specialized knowledge
  • Exploring native alternatives that provide similar aesthetic appeal
  • Choosing well-documented Erythrina species with known growing requirements
  • Working with reputable native plant nurseries in your area

The Bottom Line

While the allure of growing something rare and unusual is understandable, successful gardening usually relies on choosing plants with well-documented growing requirements and known environmental impacts. Erythrina subumbrans remains too much of an unknown quantity to recommend for home gardens.

If you do encounter this plant or have specific knowledge about it, we’d love to hear from fellow gardeners and botanists who might help fill in the information gaps. Until then, there are plenty of other beautiful, well-understood plants waiting to grace your garden!

Erythrina

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

Erythrina L. - erythrina

Species

Erythrina subumbrans (Hassk.) Merr. - erythrina

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