North America Native Plant

Kaholuamanu Melicope

Botanical name: Melicope macropus

USDA symbol: MEMA6

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Synonyms: Pelea macropus Hillebr. (PEMA9)   

Kaholuamanu Melicope: A Lost Hawaiian Treasure Have you ever wondered about the plants that once graced Hawaii’s landscapes but may now be lost forever? Meet the Kaholuamanu melicope (Melicope macropus), a native Hawaiian shrub that tells a sobering tale about plant conservation and the importance of protecting our native flora. ...

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 ⚘

Kaholuamanu Melicope: A Lost Hawaiian Treasure

Have you ever wondered about the plants that once graced Hawaii’s landscapes but may now be lost forever? Meet the Kaholuamanu melicope (Melicope macropus), a native Hawaiian shrub that tells a sobering tale about plant conservation and the importance of protecting our native flora.

What is Kaholuamanu Melicope?

Kaholuamanu melicope is a perennial shrub that was once native to the Hawaiian Islands. Like other shrubs, it typically grows as a multi-stemmed woody plant, usually reaching less than 13-16 feet in height. This plant belongs to the citrus family and was previously known by the scientific synonym Pelea macropus.

Where Does It Grow?

This remarkable plant is endemic to Hawaii, meaning it naturally occurs nowhere else on Earth. Sadly, Kaholuamanu melicope is currently classified with a Global Conservation Status of SH – Possibly Extirpated. This means it’s known only from historical records, and while there’s still hope for rediscovery, no living specimens have been confirmed in recent times.

Should You Plant Kaholuamanu Melicope?

The short answer is no – and here’s why this is actually important.

Due to its possibly extirpated status, Kaholuamanu melicope is not available for cultivation and should not be pursued for garden use. Even if seeds or specimens were somehow available, planting this rare species would only be appropriate through official conservation efforts with proper permits and scientific oversight.

Why This Matters for Native Plant Gardeners

The story of Kaholuamanu melicope serves as a powerful reminder of why choosing native plants for our gardens matters. When we support native plant cultivation, we help:

  • Preserve genetic diversity of local flora
  • Support conservation efforts for endangered species
  • Create habitat for native wildlife
  • Maintain the cultural and ecological heritage of our regions

Native Hawaiian Alternatives

Instead of seeking out this rare species, consider supporting conservation by planting other native Hawaiian plants that are available through responsible sources:

  • Other Melicope species that are not endangered
  • Native Hawaiian shrubs suited to your specific island and elevation
  • Plants that support native Hawaiian birds and insects

Supporting Conservation Efforts

If you’re passionate about rare Hawaiian plants like Kaholuamanu melicope, consider supporting local botanical gardens, native plant societies, and conservation organizations. These groups work tirelessly to document, protect, and potentially rediscover species like this one.

Sometimes the most meaningful way to honor a plant is to ensure its relatives and ecosystem companions continue to thrive. While we may not be able to grow Kaholuamanu melicope in our gardens, we can certainly grow our appreciation for Hawaii’s unique botanical heritage and our commitment to protecting what remains.

Remember: every native plant we choose to grow is a small act of conservation, helping to preserve the natural beauty and ecological integrity that makes Hawaii special.

Kaholuamanu Melicope

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

Sapindales

Family

Rutaceae Juss. - Rue family

Genus

Melicope (J.R. Forst. & G. Forst.) T.G. Hartley & B.C. Stone - melicope

Species

Melicope macropus (Hillebr.) T.G. Hartley & B.C. Stone - Kaholuamanu melicope

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