North America Native Plant

Lanilla

Botanical name: Leptocoryphium

USDA symbol: LEPTO6

Life cycle: perennial

Habit: grass

Native status: Native to Puerto Rico  

Lanilla (Leptocoryphium): Puerto Rico’s Mysterious Native Grass If you’ve stumbled across the name lanilla in your native plant research, you’ve discovered one of Puerto Rico’s more enigmatic botanical residents. This little-known grass goes by the scientific name Leptocoryphium, and while it might not be filling up garden center shelves anytime ...

Lanilla (Leptocoryphium): Puerto Rico’s Mysterious Native Grass

If you’ve stumbled across the name lanilla in your native plant research, you’ve discovered one of Puerto Rico’s more enigmatic botanical residents. This little-known grass goes by the scientific name Leptocoryphium, and while it might not be filling up garden center shelves anytime soon, it represents an interesting piece of the Caribbean’s native plant puzzle.

What Exactly Is Lanilla?

Lanilla belongs to the world of grasses and grass-like plants – that diverse group that includes everything from your typical lawn grass to sedges, rushes, and other linear-leaved beauties. As a perennial, this plant has the staying power to return year after year, which is always a plus in the gardening world.

What makes lanilla particularly special is its native status. This isn’t some globe-trotting plant that’s made itself at home everywhere – it’s genuinely Puerto Rican, evolved specifically for the unique conditions of this Caribbean island.

Where Does Lanilla Call Home?

Lanilla is exclusively native to Puerto Rico, making it what botanists call an endemic species. You won’t find this grass growing wild anywhere else in the world, which gives it a certain botanical celebrity status, even if it’s not exactly famous.

The Gardening Reality Check

Here’s where we need to have an honest conversation. While lanilla sounds intriguing as a native plant option, there’s a significant challenge: this grass is essentially absent from the horticultural trade. You won’t find it at your local nursery, and detailed growing guides are practically non-existent.

This situation is actually quite common with many native plants, especially those from specific regions like Puerto Rico. Just because a plant is native doesn’t automatically mean it’s been domesticated for garden use.

What We Don’t Know (But Wish We Did)

The information gaps around lanilla are substantial. We don’t have reliable data on:

  • Specific growing conditions and soil preferences
  • Mature size and growth rate
  • Wildlife and pollinator benefits
  • Propagation methods
  • Landscape applications
  • Conservation status

For Puerto Rican Gardeners

If you’re gardening in Puerto Rico and are passionate about native plants, lanilla represents the kind of species that might benefit from more attention and study. However, given the lack of cultivation information, it’s not something you can easily add to your garden right now.

The climate in Puerto Rico (roughly equivalent to USDA zones 10-11) would certainly be suitable for this native grass, but without knowing its specific habitat requirements, successful cultivation would be largely experimental.

The Bigger Picture

Lanilla serves as a reminder that our understanding of native plants is still evolving. While we celebrate the well-known natives that have made their way into cultivation, there are countless species like lanilla that remain botanical mysteries.

For now, if you’re interested in native grasses for your Puerto Rican landscape, you might want to look into better-studied alternatives that can provide similar ecological benefits while being more reliably available and easier to grow.

Sometimes the most responsible approach to native plant gardening is acknowledging when we simply don’t know enough about a species to recommend it – and lanilla appears to be one of those cases, at least for now.

Lanilla

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Leptocoryphium Nees - lanilla

Species

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