North America Native Plant

Tapeworm-plant

Botanical name: Eubrachion ambiguum var. jamaicense

USDA symbol: EUAMJ

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico  

Tapeworm-Plant: A Mysterious Puerto Rican Native Worth Protecting If you’ve stumbled upon the name tapeworm-plant in your search for unique native plants, you’ve discovered one of Puerto Rico’s most enigmatic botanical mysteries. The tapeworm-plant (Eubrachion ambiguum var. jamaicense) is a perennial shrub that represents the fascinating—and sometimes frustrating—world of rare ...

Rare plant alert!

Region: Conservation status by state

Status: SNRT2?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Subnational conservation status not yet assessed. ⚘

Tapeworm-Plant: A Mysterious Puerto Rican Native Worth Protecting

If you’ve stumbled upon the name tapeworm-plant in your search for unique native plants, you’ve discovered one of Puerto Rico’s most enigmatic botanical mysteries. The tapeworm-plant (Eubrachion ambiguum var. jamaicense) is a perennial shrub that represents the fascinating—and sometimes frustrating—world of rare native plants.

What Makes This Plant Special?

The tapeworm-plant is a perennial, multi-stemmed woody shrub that typically grows less than 13-16 feet tall. Like many shrubs, it usually develops several stems from or near the ground, though environmental conditions can sometimes create variations in its growth pattern.

What truly sets this plant apart, however, is its rarity and the mystery surrounding it. With a Global Conservation Status of SNRT2? (which translates to undefined), this plant exists in a botanical gray area that makes it particularly intriguing for plant enthusiasts and concerning for conservationists.

Where Does It Come From?

The tapeworm-plant is native exclusively to Puerto Rico, making it a true island endemic. This limited geographic distribution is part of what makes the species so special—and so vulnerable.

Should You Grow Tapeworm-Plant?

Here’s where things get complicated. While supporting native plants is always admirable, the tapeworm-plant’s undefined conservation status means we need to proceed with extreme caution. If you’re considering adding this plant to your garden, here are the key considerations:

  • Rarity concerns: With its uncertain conservation status, any cultivation should only use responsibly sourced material
  • Limited availability: You’re unlikely to find this plant at your local nursery
  • Unknown growing requirements: Little is documented about its specific care needs
  • Conservation responsibility: Growing rare plants comes with the duty to protect and preserve them

The Reality of Growing Rare Natives

Unfortunately, much about the tapeworm-plant’s growing requirements remains unknown. We don’t have detailed information about its preferred soil conditions, water needs, sunlight requirements, or USDA hardiness zones. This lack of horticultural knowledge makes successful cultivation particularly challenging.

If you’re passionate about supporting Puerto Rican native plants, consider these alternatives that are better documented and more readily available:

  • Other native Puerto Rican shrubs with known cultivation requirements
  • Plants that support local pollinators and wildlife
  • Species that are less vulnerable to over-collection

A Conservation Perspective

The tapeworm-plant represents an important reminder about the fragility of island ecosystems. Endemic species like this one face unique pressures from habitat loss, climate change, and human development. Rather than attempting to grow this mysterious shrub, consider supporting conservation efforts in Puerto Rico or choosing well-documented native alternatives for your garden.

Sometimes the best way to appreciate a rare plant is to protect it in its natural habitat rather than trying to bring it into our gardens. The tapeworm-plant may be more valuable as a symbol of what we still don’t know about our natural world than as a garden specimen.

The Bottom Line

While the tapeworm-plant is undoubtedly fascinating, it’s not a practical choice for most gardeners. Its rarity, undefined conservation status, and lack of cultivation information make it better suited for botanical research than backyard gardens. If you’re drawn to unique native plants, focus on species with clear conservation benefits and established growing guidelines—your garden (and the environment) will thank you for it.

Tapeworm-plant

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

Santalales

Family

Eremolepidaceae Tiegh. & Kuijt - Catkin-mistletoe family

Genus

Eubrachion Hook. f. - tapeworm-plant

Species

Eubrachion ambiguum (Hook. & Arn.) Engl. - tapeworm-plant

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