North America Non-native Plant

Macrotyloma Tenuiflorum

Botanical name: Macrotyloma tenuiflorum

USDA symbol: MATE18

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

Synonyms: Dolichos baumannii Harms (DOBA2)   

Macrotyloma tenuiflorum: The Mystery Legume That’s Got Botanists Scratching Their Heads Ever stumbled across a plant name that sounds impressive but leaves you wondering if it’s actually a real thing? Meet Macrotyloma tenuiflorum, a plant species that’s managed to fly under the radar of most gardening enthusiasts—and for good reason. ...

Macrotyloma tenuiflorum: The Mystery Legume That’s Got Botanists Scratching Their Heads

Ever stumbled across a plant name that sounds impressive but leaves you wondering if it’s actually a real thing? Meet Macrotyloma tenuiflorum, a plant species that’s managed to fly under the radar of most gardening enthusiasts—and for good reason. This lesser-known member of the legume family is something of an enigma in the botanical world.

What’s in a Name?

While this plant goes by the scientific name Macrotyloma tenuiflorum, it doesn’t seem to have earned itself a catchy common name that’s stuck in popular use. You might occasionally see it referred to by its synonym, Dolichos baumannii Harms, but don’t expect your local nursery staff to know what you’re talking about if you ask for either name.

The Great Unknown: Where Does It Come From?

Here’s where things get interesting (or frustrating, depending on your perspective). The native range and geographical distribution of Macrotyloma tenuiflorum remain somewhat mysterious. While we know it belongs to a genus that includes various leguminous plants found in tropical and subtropical regions, pinning down exactly where this particular species calls home is trickier than finding a needle in a haystack.

Should You Plant It? The Million-Dollar Question

Before you get too excited about adding this botanical mystery to your garden, pump the brakes for a moment. Here’s what any responsible gardener should consider:

  • Limited information exists about its growing requirements
  • Unknown invasive potential in different regions
  • Uncertain availability through reputable sources
  • No established track record in cultivation

The lack of readily available information about this species is actually a red flag for most gardeners. Without knowing its specific needs, growth habits, or potential impact on local ecosystems, it’s difficult to recommend incorporating it into your landscape.

What We Do Know (Spoiler Alert: It’s Not Much)

Macrotyloma tenuiflorum is a dicot, meaning it’s a flowering plant with two seed leaves. As part of the legume family, it likely has the ability to fix nitrogen in the soil—a handy trait that many gardeners appreciate. Beyond that, details about its appearance, size, growing conditions, and hardiness zones remain elusive.

A Better Path Forward

Instead of chasing after this botanical ghost, consider exploring well-documented native legumes in your area. These plants offer:

  • Proven benefits for local wildlife and pollinators
  • Established growing guidelines and care instructions
  • Known compatibility with your regional climate
  • Support for local ecosystems

Your local native plant society or extension office can point you toward leguminous species that will thrive in your garden while supporting the environment around you.

The Bottom Line

While Macrotyloma tenuiflorum might sound like an exotic addition to your plant collection, the reality is that mysterious plants often stay mysterious for a reason. Sometimes the most responsible thing a gardener can do is stick with the tried and true—especially when it comes to supporting local ecosystems with well-understood native species.

If you’re drawn to unusual legumes, do your homework first. Research what’s native to your area, what’s been successfully cultivated by other gardeners, and what will genuinely benefit your local environment. Your garden (and the critters that visit it) will thank you for choosing plants with a proven track record over botanical question marks.

Macrotyloma Tenuiflorum

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

Macrotyloma (Wight & Arn.) Verdc. - macrotyloma

Species

Macrotyloma tenuiflorum (Micheli) Verdc.

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