North America Native Plant

Ale

Botanical name: Plantago princeps var. laxiflora

USDA symbol: PLPRL

Life cycle: perennial

Habit: subshrub

Native status: Native to Hawaii  

Synonyms: Plantago princeps Cham. & Schltdl. var. denticulata Hillebr. (PLPRD)   

Ale: Hawaii’s Rare Native Plantain Worth Protecting Meet ale (Plantago princeps var. laxiflora), one of Hawaii’s most elusive native plants. This little-known member of the plantain family represents a unique piece of the islands’ botanical heritage, though you’re unlikely to find it at your local nursery—and for good reason. A ...

Rare plant alert!

Region: Conservation status by state

Status: S1T1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Ale: Hawaii’s Rare Native Plantain Worth Protecting

Meet ale (Plantago princeps var. laxiflora), one of Hawaii’s most elusive native plants. This little-known member of the plantain family represents a unique piece of the islands’ botanical heritage, though you’re unlikely to find it at your local nursery—and for good reason.

A True Hawaiian Native

Ale is exclusively native to Hawaii, making it a true endemic treasure. As a perennial forb herb, this plant lacks the woody tissue you’d find in shrubs or trees, instead maintaining a softer, herbaceous growth pattern throughout its life. It’s classified botanically as Plantago princeps var. laxiflora, with historical synonyms including Plantago princeps var. denticulata.

This native plantain calls only the Hawaiian Islands home, representing millions of years of isolated evolution in one of the world’s most remote island chains.

Rarity Alert: Handle with Extreme Care

Here’s where things get serious: ale carries a Global Conservation Status of S1T1, indicating it’s extremely rare and possibly at risk of extinction. This isn’t a plant you can casually add to your garden wish list. In fact, finding ale in cultivation is nearly impossible, and that’s probably for the best.

If you’re passionate about Hawaiian native plants and somehow encounter ale through conservation channels, any planting should only be done with responsibly sourced material and proper permits. This means:

  • Working with established conservation programs
  • Ensuring legal acquisition through proper channels
  • Understanding your role in species preservation
  • Never collecting from wild populations

Growing Conditions and Care

Unfortunately, detailed growing information for ale remains limited due to its rarity. As a Hawaiian endemic, it likely prefers conditions similar to its native habitat, though specific requirements for soil, water, and light aren’t well-documented in cultivation guides.

What we do know is that as a perennial forb, ale would be a low-growing, non-woody plant that returns year after year. Beyond this basic growth pattern, successful cultivation would require significant research and possibly consultation with Hawaiian botanical experts.

Conservation Over Cultivation

Rather than focusing on how to grow ale in your garden, consider supporting its conservation in other ways:

  • Donate to Hawaiian native plant conservation organizations
  • Learn about and plant other Hawaiian natives that are more readily available
  • Support habitat preservation efforts in Hawaii
  • Spread awareness about rare Hawaiian plants

The Bigger Picture

Ale represents something bigger than just one rare plant—it’s a reminder of Hawaii’s incredible botanical diversity and the urgent need for conservation. While you probably won’t be growing ale in your garden anytime soon, learning about plants like this helps us appreciate the complex web of native species that make each region unique.

If you’re inspired by Hawaiian native plants but want something you can actually grow, consider researching more common Hawaiian natives that are available through ethical sources. Every native plant in our gardens is a small victory for biodiversity, even if it’s not the rarest species on the islands.

Sometimes the best way to love a plant is to admire it from afar and work to protect the wild places where it belongs.

Ale

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Plantaginales

Family

Plantaginaceae Juss. - Plantain family

Genus

Plantago L. - plantain

Species

Plantago princeps Cham. & Schltdl. - ale

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