Native Plants

Curtiss’ Hoarypea

Tephrosia angustissima var. curtissii

USDA symbol: TEANC2

perennial subshrub

Lower 48 states: native

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. Curtiss’ hoarypea belongs to the legume family and grows as ...

Curtiss’ Hoarypea may be listed as rare in your area.
Global Conservation Status

Status: S1T1 | Critically imperiled: Extremely rare. Typically 5 or fewer occurrences or under 1,000 remaining individuals.

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.

  • Species observed
  • No observations

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.

Tephrosia angustissima var. curtissii is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Tephrosia angustissima var. curtissii is also known as:

Cracca curtissii Small ex | USDA symbol: CRCU3
Tephrosia curtissii | USDA symbol: TECU2
Tephrosia seminole | USDA symbol: TESE

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Fabales
Family: Fabaceae Lindl. - Pea family
Genus: Tephrosia Pers. - hoarypea

Species: Tephrosia angustissima Shuttlw. ex Chapm. - narrowleaf hoarypea

Variety: Tephrosia angustissima Shuttlw. ex Chapm. var. curtissii (Small ex Rydb.) Isely - Curtiss' hoarypea

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