North America Native Plant

Jost Van Dyke’s Indian Mallow

Botanical name: Bastardiopsis eggersii

USDA symbol: BAEG6

Life cycle: perennial

Habit: tree

Native status: Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Synonyms: Abutilon virginianum Krapov. (ABVI2)  âš˜  Sida eggersii Baker f. (SIEG2)   

Jost Van Dyke’s Indian Mallow: A Critically Rare Caribbean Native Worth Protecting If you’ve stumbled upon information about Jost Van Dyke’s Indian mallow (Bastardiopsis eggersii), you’ve discovered one of the Caribbean’s most precious and imperiled native plants. This isn’t your typical gardening recommendation – it’s more of a conservation story ...

Rare plant alert!

Region: Conservation status by state

Status: S1: 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) ⚘

Jost Van Dyke’s Indian Mallow: A Critically Rare Caribbean Native Worth Protecting

If you’ve stumbled upon information about Jost Van Dyke’s Indian mallow (Bastardiopsis eggersii), you’ve discovered one of the Caribbean’s most precious and imperiled native plants. This isn’t your typical gardening recommendation – it’s more of a conservation story that every plant lover should know about.

What Is Jost Van Dyke’s Indian Mallow?

Jost Van Dyke’s Indian mallow, scientifically known as Bastardiopsis eggersii, is a perennial woody plant that belongs to the mallow family. You might also see it referenced by its botanical synonyms Abutilon virginianum or Sida eggersii in older literature. This species develops as a tree-like plant, typically growing with a single trunk and reaching heights greater than 13 to 16 feet, though environmental conditions can sometimes result in a shorter, multi-stemmed growth form.

Where Does It Come From?

This remarkable plant calls the Caribbean home, specifically native to Puerto Rico and the U.S. Virgin Islands. Its common name gives away one of its key locations – Jost Van Dyke, a small island in the British Virgin Islands archipelago.

The Conservation Reality: Why This Plant Is Special

Here’s where things get serious. Bastardiopsis eggersii carries a Global Conservation Status of S1, which translates to Critically Imperiled. This classification means the species faces extreme rarity with typically five or fewer known occurrences and very few remaining individuals – we’re talking fewer than 1,000 plants in the wild.

This isn’t just rare; it’s teetering on the edge of extinction.

Should You Plant Jost Van Dyke’s Indian Mallow?

This is where we need to have an honest conversation. While supporting rare native plants is admirable, Bastardiopsis eggersii presents unique challenges:

  • Availability: Given its critical rarity, finding this plant through normal garden center channels is virtually impossible
  • Responsible sourcing: Any specimens would need to come from legitimate conservation propagation programs, not wild collection
  • Specialized care: Limited information exists about its specific growing requirements
  • Conservation priority: Wild populations need protection more than home cultivation

Growing Information (Limited Available Data)

Unfortunately, detailed growing information for this critically rare species is scarce. What we do know:

  • Plant type: Perennial woody tree
  • Mature size: Typically exceeds 13-16 feet in height
  • Climate: Adapted to Caribbean tropical conditions
  • USDA zones: Likely zones 10-11 based on native range

What You Can Do Instead

Rather than seeking out this rare species for your garden, consider these meaningful alternatives:

  • Support conservation efforts: Look for organizations working to protect Caribbean native plants
  • Choose related natives: Plant other native mallow family members appropriate to your region
  • Create habitat: Focus on native plants that support local ecosystems and pollinators
  • Spread awareness: Share information about rare plant conservation with fellow gardeners

The Bigger Picture

Jost Van Dyke’s Indian mallow represents something bigger than just one rare plant – it’s a reminder of how fragile our native ecosystems can be. While we can’t all grow this particular species in our backyards, we can all make choices that support biodiversity and conservation.

Every time you choose a native plant over a non-native alternative, you’re contributing to a healthier ecosystem. Every time you avoid invasive species, you’re protecting plants like Bastardiopsis eggersii from further habitat pressure.

Sometimes the most meaningful way to honor a rare plant isn’t to grow it ourselves, but to ensure it continues to exist in its natural habitat for future generations to discover and protect.

Jost Van Dyke’s Indian Mallow

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Malvales

Family

Malvaceae Juss. - Mallow family

Genus

Bastardiopsis (K. Schum.) Hassler - Indian mallow

Species

Bastardiopsis eggersii (Baker f.) Fuertes & Fryxell - Jost Van Dyke's Indian mallow

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