North America Native Plant

Diente De Perro

Botanical name: Lithachne pauciflora

USDA symbol: LIPA7

Life cycle: perennial

Habit: grass

Native status: Native to Puerto Rico  

Synonyms: Olyra pauciflora Sw. (OLPA)   

Diente de Perro: A Lesser-Known Native Grass of Puerto Rico If you’re passionate about native gardening in Puerto Rico, you might stumble across the intriguingly named diente de perro (Lithachne pauciflora) in your research. This perennial grass species represents one of those wonderful botanical mysteries that remind us just how ...

Diente de Perro: A Lesser-Known Native Grass of Puerto Rico

If you’re passionate about native gardening in Puerto Rico, you might stumble across the intriguingly named diente de perro (Lithachne pauciflora) in your research. This perennial grass species represents one of those wonderful botanical mysteries that remind us just how much we still have to learn about our local flora.

What is Diente de Perro?

Diente de perro, which translates to dog’s tooth in English, is a native perennial grass species that belongs to the diverse world of grasses and grass-like plants. Like many members of the grass family, it has adapted to life in the Caribbean climate and represents part of Puerto Rico’s unique botanical heritage.

You might also encounter this plant listed under its botanical synonym, Olyra pauciflora, in older botanical references, but Lithachne pauciflora is the currently accepted scientific name.

Where Does It Grow?

This native grass calls Puerto Rico home, where it has evolved alongside the island’s other indigenous plant species. As a facultative upland species, diente de perro typically prefers drier conditions but can occasionally tolerate wetter environments – making it somewhat adaptable to different moisture levels in the landscape.

Should You Grow Diente de Perro?

Here’s where things get interesting – and a bit challenging. While diente de perro has the appealing qualities of being a native perennial that could theoretically support local ecosystems, there’s remarkably little information available about actually growing this grass in cultivation.

The Challenge of Lesser-Known Natives

Diente de perro represents a common dilemma for native plant enthusiasts: we know it exists, we know it’s native, but practical growing information is scarce. This lack of cultivation knowledge might mean:

  • Seeds or plants may be difficult to source from nurseries
  • Specific growing requirements remain largely undocumented
  • Its ornamental value and landscape applications are unclear
  • Propagation methods haven’t been well-established for home gardeners

What This Means for Your Garden

If you’re committed to native gardening in Puerto Rico, you might consider diente de perro as part of a broader conservation effort rather than a typical landscape plant. However, without clear growing guidelines, it’s probably wise to start with better-documented native grasses and plants that have established cultivation practices.

The Bigger Picture

Plants like diente de perro highlight an important aspect of native gardening: not every native species makes a practical garden plant, at least not without more research and development of cultivation techniques. Sometimes the most valuable thing we can do is simply acknowledge these species exist and support broader conservation efforts that protect their natural habitats.

If you’re determined to work with native grasses in Puerto Rico, consider reaching out to local botanical gardens, universities, or native plant societies who might have more specific knowledge about cultivating lesser-known species like diente de perro. They might be working on propagation research or know of specialized sources for native seeds.

The Bottom Line

While diente de perro certainly deserves recognition as part of Puerto Rico’s native flora, it’s not quite ready for mainstream gardening. For now, it remains one of those intriguing botanical puzzles that reminds us there’s still so much to discover about the plants growing right in our own backyards.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Caribbean

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Diente De Perro

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

Lithachne P. Beauv. - diente de perro

Species

Lithachne pauciflora (Sw.) P. Beauv. - diente de perro

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