North America Native Plant

Kane County Twinpod

Botanical name: Physaria lepidota var. membranacea

USDA symbol: PHLEM

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Physaria chambersii Rollins var. membranacea (PHCHM)  âš˜  Physaria lepidota Rollins ssp. membranacea (Rollins) O'Kane (PHLEM2)  âš˜  Physaria membranacea Rollins (PHME5)   

Kane County Twinpod: A Rare Utah Native Worth Protecting Meet the Kane County twinpod (Physaria lepidota var. membranacea), a charming little perennial that’s as rare as it sounds. This petite member of the mustard family calls one very specific corner of Utah home, making it one of those special plants ...

Rare plant alert!

Region: Conservation status by state

Status: S3T2?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Kane County Twinpod: A Rare Utah Native Worth Protecting

Meet the Kane County twinpod (Physaria lepidota var. membranacea), a charming little perennial that’s as rare as it sounds. This petite member of the mustard family calls one very specific corner of Utah home, making it one of those special plants that reminds us just how unique and irreplaceable our native flora can be.

What Makes Kane County Twinpod Special

This delightful forb might be small, but it packs personality into every silvery-green leaf and cheerful yellow flower. As a perennial herbaceous plant, it comes back year after year, forming low-growing clumps that hug the ground in classic desert fashion. The twinpod part of its name refers to the distinctive seed pods that split into two chambers – a characteristic feature that makes identification easier for plant enthusiasts.

Where You’ll Find It (Spoiler: It’s Pretty Exclusive)

Kane County twinpod is what botanists call endemic – meaning it grows naturally in only one place on Earth. In this case, that place is Utah, specifically in areas around Kane County. This extremely limited geographic distribution makes it a true botanical treasure, but also puts it in a vulnerable position.

A Plant That Needs Our Care

Here’s where things get serious for a moment. Kane County twinpod has a Global Conservation Status of S3T2?, which essentially means it’s rare and potentially at risk. This isn’t a plant you’ll find at your local nursery, and for good reason – its limited population needs protection in the wild.

If you’re interested in growing this species, it’s crucial to source any plants or seeds through legitimate conservation programs or botanical institutions. Never collect from wild populations, as this can harm the already limited gene pool.

Growing Kane County Twinpod (For the Lucky Few)

Should you have the opportunity to grow this rare beauty through proper channels, here’s what you need to know:

Perfect Growing Conditions

  • Sunlight: Full sun is essential – this desert native thrives in bright, direct light
  • Soil: Well-draining, sandy or rocky soil that mimics its natural habitat
  • Water: Extremely drought tolerant once established; overwatering is more dangerous than underwatering
  • Climate: Hardy in USDA zones 5-8, adapted to temperature extremes

Care Tips for Success

  • Drainage is everything – consider raised beds or containers with excellent drainage
  • Avoid rich, organic soils that retain moisture
  • Water sparingly, allowing soil to dry completely between waterings
  • Mulch with gravel or small stones rather than organic materials
  • Protect from excessive winter moisture if growing outside its native range

Garden Design and Landscape Role

In the right setting, Kane County twinpod makes an excellent addition to:

  • Specialized rock gardens featuring rare plants
  • Xerophytic (drought-adapted) plant collections
  • Educational botanical displays
  • Container gardens for plant collectors

Its low-growing habit and silvery foliage provide nice textural contrast against darker plants, while its bright yellow flowers add seasonal color to desert-themed landscapes.

Supporting Pollinators

Like many members of the mustard family, Kane County twinpod attracts small native bees and other beneficial insects with its yellow flowers. While it may not support the same volume of pollinators as more common species, every native plant contributes to the complex web of relationships that sustain local ecosystems.

The Bottom Line

Kane County twinpod represents everything we love about native plants – it’s perfectly adapted to its environment, supports local wildlife, and tells the story of a unique landscape. While most gardeners won’t have the opportunity to grow this rare species, learning about plants like this helps us appreciate the incredible diversity of our native flora and the importance of conservation.

If you’re passionate about supporting rare native plants, consider contributing to botanical gardens or conservation organizations working to protect species like Kane County twinpod. And remember – there are many more common native plants from Utah and the surrounding region that can bring similar beauty and ecological benefits to your garden without the conservation concerns.

Kane County Twinpod

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

Capparales

Family

Brassicaceae Burnett - Mustard family

Genus

Physaria (Nutt. ex Torr. & A. Gray) A. Gray - twinpod

Species

Physaria lepidota Rollins - Kane County twinpod

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