North America Native Plant

Dilomilis

Botanical name: Dilomilis

USDA symbol: DILOM

Life cycle: perennial

Habit: forb

Native status: Native to Puerto Rico  

Dilomilis: A Mysterious Native Puerto Rican Perennial Meet Dilomilis, a perennial forb that calls Puerto Rico home. While this plant species remains somewhat of an enigma in the gardening world, what we do know makes it an intriguing addition to the conversation about native Caribbean plants. What Is Dilomilis? Dilomilis ...

Dilomilis: A Mysterious Native Puerto Rican Perennial

Meet Dilomilis, a perennial forb that calls Puerto Rico home. While this plant species remains somewhat of an enigma in the gardening world, what we do know makes it an intriguing addition to the conversation about native Caribbean plants.

What Is Dilomilis?

Dilomilis is classified as a forb, which in simple terms means it’s an herbaceous flowering plant without woody stems. Think of it as the plant world’s equivalent of a soft-stemmed wildflower rather than a shrub or tree. As a perennial, this plant returns year after year, making it a potentially valuable long-term garden resident.

Unlike woody plants that develop thick, bark-covered stems, forbs like Dilomilis keep their growth buds at or below ground level, allowing them to survive and regrow from their root systems.

Native Range and Distribution

Dilomilis is native exclusively to Puerto Rico, making it a true island endemic. This Caribbean location suggests the plant has adapted to tropical conditions and likely thrives in the warm, humid climate that characterizes this region.

The Information Gap

Here’s where things get interesting – and a bit frustrating for curious gardeners. Despite being documented as a native Puerto Rican species, detailed information about Dilomilis is surprisingly scarce. We don’t have clear data on:

  • Specific growing requirements
  • Mature size and appearance
  • Flower characteristics or blooming season
  • Preferred soil conditions
  • Wildlife and pollinator relationships
  • Propagation methods

Should You Try Growing Dilomilis?

The lack of available information makes Dilomilis a challenging choice for most gardeners. Without knowing its specific needs, appearance, or growing habits, it’s difficult to recommend this plant for typical landscape use.

If you’re gardening in Puerto Rico or a similar tropical climate and are interested in native plants, you might consider better-documented Caribbean natives instead. Plants with established growing guides and known benefits to local ecosystems would be more reliable choices for creating a successful native garden.

For the Plant Detective

If you’re a botanical enthusiast or researcher interested in Puerto Rican flora, Dilomilis presents an intriguing mystery. The limited documentation suggests this might be a rare or understudied species that could benefit from more research and conservation attention.

Should you encounter this plant in the wild or in specialized collections, documenting its characteristics, growing conditions, and ecological relationships could contribute valuable knowledge to the botanical community.

The Bottom Line

While Dilomilis represents the fascinating diversity of Puerto Rican native plants, its mysterious nature makes it unsuitable for typical garden recommendations. For gardeners seeking reliable native options, focusing on well-documented Caribbean natives with established growing guides and known ecological benefits would be a more practical approach.

Sometimes the most interesting plants are the ones that remind us how much we still have to learn about the natural world around us.

Dilomilis

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Orchidales

Family

Orchidaceae Juss. - Orchid family

Genus

Dilomilis Raf. - dilomilis

Species

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