North America Native Plant

Curtiss’ Hoarypea

Botanical name: Tephrosia angustissima var. curtissii

USDA symbol: TEANC2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Cracca curtissii Small ex Rydb. (CRCU3)  âš˜  Tephrosia curtissii (Small ex Rydb.) Shinners (TECU2)  âš˜  Tephrosia seminole Shinners (TESE)   

Curtiss’ Hoarypea: A Rare Florida Native Worth Protecting Meet Curtiss’ hoarypea (Tephrosia angustissima var. curtissii), one of Florida’s most elusive native wildflowers. This little-known perennial herb represents a fascinating piece of the Sunshine State’s botanical heritage, though you’d be incredibly lucky to stumble across one in the wild. What Makes ...

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) ⚘

Curtiss’ Hoarypea: A Rare Florida Native Worth Protecting

Meet Curtiss’ hoarypea (Tephrosia angustissima var. curtissii), one of Florida’s most elusive native wildflowers. This little-known perennial herb represents a fascinating piece of the Sunshine State’s botanical heritage, though you’d be incredibly lucky to stumble across one in the wild.

What Makes This Plant Special?

Curtiss’ hoarypea belongs to the legume family and grows as what botanists call a forb – essentially a soft-stemmed perennial that dies back to the ground each year rather than developing woody stems like shrubs or trees. Don’t let the scientific jargon fool you though; this is simply a wildflower that knows how to come back year after year.

This plant has quite the collection of aliases too. Over the years, botanists have called it Cracca curtissii, Tephrosia curtissii, and Tephrosia seminole. It’s like this little plant couldn’t decide on a stage name!

Where Does It Call Home?

Here’s where things get really interesting (and a bit concerning). Curtiss’ hoarypea is found only in Florida – nowhere else in the world. This makes it what we call an endemic species, essentially Florida’s own botanical treasure.

A Plant in Peril

Now for the serious talk. This remarkable little plant carries a conservation status of S1T1, which in plain English means it’s critically imperiled. We’re talking about a species hanging on by a thread, with very few populations remaining in the wild.

What does this mean for gardeners? If you’re interested in growing Curtiss’ hoarypea, you absolutely must ensure any plants come from responsibly sourced, legally propagated stock. Never collect from wild populations – every single plant in nature is precious for this species’ survival.

The Growing Challenge

Here’s where we hit a bit of a roadblock. Because Curtiss’ hoarypea is so rare, there’s limited information available about its specific growing requirements, preferred conditions, or cultivation techniques. This isn’t unusual for critically endangered plants – they simply haven’t been studied or grown enough to develop detailed horticultural knowledge.

What we do know is that as a member of the legume family, it likely has some nitrogen-fixing capabilities and may prefer well-draining soils typical of Florida’s natural areas. But without more research and cultivation experience, growing this plant successfully would be quite the gardening adventure.

Why Consider This Plant?

You might wonder why anyone would want to tackle such a challenging and rare plant. Here are some compelling reasons:

  • Conservation impact: Growing rare natives helps preserve genetic diversity
  • Unique garden addition: You’d have something virtually no other gardener possesses
  • Florida heritage: Supporting truly local, endemic species
  • Educational value: Learning about rare plant conservation

The Reality Check

Let’s be honest – Curtiss’ hoarypea isn’t for everyone. The combination of extreme rarity, limited availability, unknown growing requirements, and conservation concerns makes this a plant for serious native plant enthusiasts or conservation-minded gardeners willing to take on a significant challenge.

If you’re new to native gardening or looking for reliable, well-understood Florida natives, consider starting with more common species in the Tephrosia genus or other native legumes that offer similar ecological benefits with better-known growing requirements.

Moving Forward Responsibly

If Curtiss’ hoarypea has captured your imagination, the best approach is to connect with native plant societies, botanical gardens, or conservation organizations in Florida. They may have information about legitimate sources or conservation efforts you could support.

Remember, sometimes the most meaningful way to appreciate a rare plant is to protect its wild habitat rather than trying to grow it in our gardens. Supporting land conservation efforts that protect the remaining populations of Curtiss’ hoarypea might be the most impactful choice of all.

This little Florida endemic reminds us that our native plant world still holds mysteries and treasures worth protecting – some so rare and precious that simply knowing they exist enriches our understanding of the incredible botanical diversity right in our own backyard.

Curtiss’ Hoarypea

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Tephrosia Pers. - hoarypea

Species

Tephrosia angustissima Shuttlw. ex Chapm. - narrowleaf hoarypea

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