North America Native Plant

Puerto Rico Velvet Bur

Botanical name: Priva portoricensis

USDA symbol: PRPO

Life cycle: annual

Habit: subshrub

Native status: Native to Puerto Rico  

Puerto Rico Velvet Bur: A Vanishing Native Worth Knowing About If you’re passionate about native plants and conservation, you’ve probably never heard of Puerto Rico velvet bur (Priva portoricensis) – and there’s a heartbreaking reason why. This little-known native plant tells a story that’s becoming all too common in our ...

Rare plant alert!

Region: Conservation status by state

Status: SH: Status is uncertain but is somewhere between the following rankings: Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘

Puerto Rico Velvet Bur: A Vanishing Native Worth Knowing About

If you’re passionate about native plants and conservation, you’ve probably never heard of Puerto Rico velvet bur (Priva portoricensis) – and there’s a heartbreaking reason why. This little-known native plant tells a story that’s becoming all too common in our modern world: the quiet disappearance of species before we even get to know them properly.

What is Puerto Rico Velvet Bur?

Puerto Rico velvet bur is a native forb that belongs to Puerto Rico’s original plant community. As a non-woody herbaceous plant, it would have grown as either an annual or perennial, contributing to the island’s diverse ecosystem in ways we’re still trying to understand.

The plant gets its name from its native homeland – the beautiful island of Puerto Rico, where it evolved as part of the natural landscape long before human development transformed the region.

Where Does It Grow?

Priva portoricensis is endemic to Puerto Rico, meaning it exists nowhere else in the world naturally. This makes it incredibly special – and incredibly vulnerable.

The Conservation Reality

Here’s where the story takes a sobering turn. Puerto Rico velvet bur has a Global Conservation Status of SH, which stands for Possibly Extirpated. In plain English, this means the plant is known only from historical records – scientists haven’t been able to find it in recent years, though there’s still hope someone might rediscover it.

This classification puts Puerto Rico velvet bur in botanical limbo. It’s not officially declared extinct, but it’s missing in action from its native habitat.

Should You Try to Grow It?

The short answer is: probably not, and here’s why. Since this plant is possibly extirpated, there are no commercially available seeds or plants. Even if someone claimed to have Puerto Rico velvet bur for sale, you’d want to be extremely cautious about the source and authenticity.

If you’re interested in supporting Puerto Rico’s native plant heritage, consider these alternatives:

  • Support botanical gardens and conservation organizations working to document and preserve Puerto Rican flora
  • Choose other native Puerto Rican plants for your garden if you live in a suitable climate
  • Participate in citizen science projects that help track rare and endangered plants

What We Don’t Know

The tragic reality of Puerto Rico velvet bur’s situation is highlighted by how little we know about this plant. Details about its growing conditions, care requirements, wildlife benefits, and ecological role remain largely undocumented. This knowledge gap represents not just lost horticultural information, but a missing piece of Puerto Rico’s natural heritage.

We don’t know what pollinators it supported, what soil conditions it preferred, or what role it played in its ecosystem. These unknowns serve as a reminder of how much we can lose when species slip away before being thoroughly studied.

The Bigger Picture

Puerto Rico velvet bur’s story isn’t unique. Island ecosystems worldwide face similar challenges, with native plants disappearing due to habitat loss, invasive species, climate change, and development pressure. Each lost species represents a unique evolutionary story that took thousands of years to write.

While you may not be able to grow Puerto Rico velvet bur in your garden, you can honor its memory by supporting native plant conservation efforts and choosing well-documented native species for your own landscape. Every native plant we successfully grow and protect helps preserve the botanical diversity that makes our world so wonderfully complex.

Sometimes the most powerful gardening lesson isn’t about what to plant, but about understanding what we’ve lost – and working to ensure other species don’t follow the same path.

Puerto Rico Velvet Bur

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Lamiales

Family

Verbenaceae J. St.-Hil. - Verbena family

Genus

Priva Adans. - priva

Species

Priva portoricensis Urb. - Puerto Rico velvet bur

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