North America Native Plant

Narrowpod Sensitive Pea

Botanical name: Chamaecrista lineata var. keyensis

USDA symbol: CHLIK

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Cassia keyensis (Pennell) J.F. Macbr. (CAKE3)  âš˜  Chamaecrista keyensis Pennell (CHKE2)   

Narrowpod Sensitive Pea: A Rare Florida Keys Treasure Worth Protecting Meet the narrowpod sensitive pea (Chamaecrista lineata var. keyensis), a charming little perennial that’s as rare as it is remarkable. This delicate native plant calls the Florida Keys home, but don’t let its understated appearance fool you – it’s playing ...

Rare plant alert!

Region: United States

Status: S5T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Narrowpod Sensitive Pea: A Rare Florida Keys Treasure Worth Protecting

Meet the narrowpod sensitive pea (Chamaecrista lineata var. keyensis), a charming little perennial that’s as rare as it is remarkable. This delicate native plant calls the Florida Keys home, but don’t let its understated appearance fool you – it’s playing a crucial role in one of America’s most unique ecosystems.

What Makes This Plant Special?

The narrowpod sensitive pea is a member of the legume family, sporting tiny yellow flowers and compound leaves that have a fascinating party trick – they fold up when touched! This sensitive behavior gives the plant part of its common name. As a perennial forb, it lacks woody stems but returns year after year, forming low-growing colonies that hug the ground.

This plant is found exclusively in Florida, making it a true Florida endemic. However, its distribution is incredibly limited, earning it an endangered status that should give any gardener pause.

A Conservation Concern

Here’s where things get serious: the narrowpod sensitive pea is classified as endangered, with a global conservation status that reflects its precarious position in the wild. This isn’t just another pretty wildflower – it’s a species fighting for survival in an increasingly developed landscape.

If you’re considering adding this plant to your garden, please proceed with extreme caution and responsibility. Only source plants from reputable native plant societies or conservation organizations that can guarantee the material wasn’t collected from wild populations. Better yet, consider supporting habitat conservation efforts instead.

Growing Conditions and Care

For those committed to responsible cultivation, the narrowpod sensitive pea thrives in:

  • Full sun exposure
  • Well-draining sandy soils (mimicking its natural coastal habitat)
  • USDA hardiness zones 10-11
  • Minimal supplemental watering once established

This tough little plant is naturally drought-tolerant and adapted to the challenging conditions of the Florida Keys, including salt spray and intense sun. It performs best when left relatively undisturbed, making it ideal for naturalistic landscapes.

Garden Role and Landscape Use

In appropriate climates, the narrowpod sensitive pea works beautifully as:

  • Ground cover in native plant gardens
  • Addition to coastal or xerophytic landscapes
  • Component of butterfly and pollinator gardens
  • Educational plant for demonstrating rare Florida flora

Its small yellow flowers attract bees and butterflies, while its low-growing habit makes it perfect for front-of-border plantings or naturalized areas.

The Bottom Line

While the narrowpod sensitive pea is undeniably attractive and ecologically valuable, its endangered status means most gardeners should admire it from afar. If you’re passionate about supporting this species, consider donating to conservation efforts in the Florida Keys or volunteering with organizations working to protect its remaining habitat.

For gardeners outside of zones 10-11, or those seeking similar aesthetic appeal without conservation concerns, consider other native Chamaecrista species that are more common and readily available through ethical sources. Your local native plant society can suggest appropriate alternatives that will provide similar beauty while supporting local ecosystems.

Sometimes the most loving thing we can do for a rare plant is to let it be wild and focus our gardening efforts on species that can handle the pressure of cultivation. The narrowpod sensitive pea deserves our respect, protection, and space to recover in its natural Keys habitat.

Narrowpod Sensitive Pea

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

Chamaecrista (L.) Moench - sensitive pea

Species

Chamaecrista lineata (Sw.) Greene - narrowpod sensitive pea

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