North America Native Plant

Fivepetal Leaf-flower

Botanical name: Phyllanthus pentaphyllus polycladus

USDA symbol: PHPEP

Life cycle: perennial

Habit: forb

Native status: Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Synonyms: Phyllanthus polycladus Urb. (PHPO6)   

Fivepetal Leaf-Flower: A Rare Caribbean Native Worth Knowing About Meet the fivepetal leaf-flower (Phyllanthus pentaphyllus polycladus), a little-known perennial native to the warm, tropical waters of the Caribbean. If you’re scratching your head wondering why you’ve never heard of this plant, you’re not alone – this particular subspecies is quite ...

Fivepetal Leaf-Flower: A Rare Caribbean Native Worth Knowing About

Meet the fivepetal leaf-flower (Phyllanthus pentaphyllus polycladus), a little-known perennial native to the warm, tropical waters of the Caribbean. If you’re scratching your head wondering why you’ve never heard of this plant, you’re not alone – this particular subspecies is quite the wallflower in the gardening world!

What Exactly Is Fivepetal Leaf-Flower?

The fivepetal leaf-flower belongs to the Phyllanthus family and goes by the scientific name Phyllanthus pentaphyllus polycladus. You might also see it listed under its synonym, Phyllanthus polycladus. This perennial plant is classified as a forb, which is just a fancy way of saying it’s a non-woody plant that dies back to the ground each year but returns from its roots – think of it as nature’s own magic trick!

Where Does It Call Home?

This Caribbean beauty is native to both Puerto Rico and the U.S. Virgin Islands, where it has adapted to the warm, tropical climate over countless generations. Its natural range is quite limited, making it a true regional specialty.

Should You Plant Fivepetal Leaf-Flower?

Here’s where things get a bit tricky. While this native plant certainly has its charm, there are some important considerations before you start hunting for seeds:

  • Limited availability: This plant is rarely found in nurseries or seed catalogs
  • Specific climate needs: Only suitable for USDA zones 10-11 (think southern Florida or Hawaii)
  • Unknown garden performance: Very little documentation exists about its behavior in cultivation
  • Mystery growing requirements: Specific soil, water, and light preferences are not well documented

Growing Conditions and Care

If you’re determined to try growing this elusive plant, you’ll need to recreate its native Caribbean environment as closely as possible. This means:

  • Year-round warm temperatures (no frost tolerance)
  • High humidity levels
  • Well-draining soil (most Caribbean natives dislike waterlogged conditions)
  • Protection from strong winds

Unfortunately, specific care instructions, propagation methods, and detailed growing requirements remain largely undocumented for this subspecies.

Better Alternatives for Most Gardeners

Unless you live in the Caribbean or have a specialized greenhouse setup, you might want to consider other Phyllanthus species or Caribbean natives that are better documented and more readily available. Many other members of the Phyllanthus family offer similar characteristics with much better cultivation information.

The Bottom Line

While the fivepetal leaf-flower is undoubtedly a fascinating native plant with potential ecological value in its native range, it’s more of a botanical curiosity than a practical garden choice for most of us. If you’re passionate about Caribbean flora and have the right climate conditions, it might be worth exploring – just be prepared for a bit of detective work when it comes to growing requirements!

For most gardeners, focusing on well-documented native plants in your own region will give you much better results and contribute more meaningfully to local ecosystems. Sometimes the most interesting plants are the ones that remain mysterious!

Fivepetal Leaf-flower

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

Euphorbiales

Family

Euphorbiaceae Juss. - Spurge family

Genus

Phyllanthus L. - leafflower

Species

Phyllanthus pentaphyllus C. Wright ex Griseb. - fivepetal leaf-flower

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