North America Native Plant

Lone Fleabane

Botanical name: Erigeron uncialis conjugans

USDA symbol: ERUNC

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Erigeron uncialis S.F. Blake var. conjugans (ERUNC2)   

Lone Fleabane: A Rare Nevada Native Worth Knowing About If you’re passionate about native plants and happen to be gardening in Nevada, you might be intrigued by lone fleabane (Erigeron uncialis conjugans). This lesser-known member of the fleabane family represents one of nature’s more specialized creations – a perennial forb ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4T3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘ Subspecies or variety is 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. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Lone Fleabane: A Rare Nevada Native Worth Knowing About

If you’re passionate about native plants and happen to be gardening in Nevada, you might be intrigued by lone fleabane (Erigeron uncialis conjugans). This lesser-known member of the fleabane family represents one of nature’s more specialized creations – a perennial forb that calls the Silver State home.

What Makes Lone Fleabane Special

Lone fleabane is a true Nevada native, found exclusively within the state’s borders. As a perennial forb, it lacks the woody stems of shrubs and trees but returns year after year from its root system. Like other members of the Erigeron genus, it belongs to the aster family and likely produces the characteristic daisy-like flowers that make fleabanes so recognizable.

The plant goes by the scientific name Erigeron uncialis conjugans, though you might occasionally see it referenced as Erigeron uncialis S.F. Blake var. conjugans in older botanical literature.

Where You’ll Find It Growing Wild

This fleabane has a remarkably limited range – it’s endemic to Nevada and found nowhere else in the world. This restricted distribution makes it a truly special plant for Nevada gardeners interested in showcasing their state’s unique botanical heritage.

A Word About Rarity

Here’s something important to know: lone fleabane has a conservation status that suggests it may be of conservation concern. With its limited geographic range and specialized habitat requirements, this isn’t a plant you’ll find at your local garden center.

If you’re interested in growing lone fleabane, it’s crucial to source seeds or plants only from reputable native plant suppliers who can guarantee the material was ethically and sustainably collected. Never collect from wild populations, as this could harm already limited natural stands.

Growing Lone Fleabane: What We Know

Unfortunately, detailed cultivation information specific to lone fleabane is quite limited. However, we can make some educated guesses based on its fleabane relatives and Nevada’s growing conditions:

  • As a Nevada native, it’s likely adapted to arid conditions and well-draining soils
  • Most fleabanes prefer full sun to partial shade
  • Being a perennial forb, it should return each year once established
  • Like many desert natives, it probably requires minimal water once established

Is Lone Fleabane Right for Your Garden?

This plant presents an interesting dilemma for native plant enthusiasts. On one hand, it’s a true Nevada native that could add authentic local character to a native landscape. On the other hand, its potential rarity means it should be approached with caution and respect.

Consider lone fleabane if you:

  • Are passionate about Nevada’s unique flora
  • Have experience growing challenging or rare natives
  • Can commit to sourcing plants responsibly
  • Want to contribute to conservation through cultivation

You might want to skip it if you’re new to native gardening or looking for readily available, well-documented plants.

Alternative Nevada Natives to Consider

If lone fleabane proves too challenging to source or grow, Nevada has many other wonderful native fleabanes and aster family members that might scratch the same itch. Look for more common species like spreading fleabane (Erigeron divergens) or desert aster (Symphyotrichum ericoides), which offer similar aesthetic appeal with better availability and growing information.

The Bottom Line

Lone fleabane represents the fascinating world of highly specialized native plants – species that evolved to thrive in very specific conditions and locations. While it may not be the easiest native plant to grow, it offers Nevada gardeners a chance to connect with their state’s unique botanical heritage. Just remember to approach it with the respect and caution that any rare native deserves.

Lone Fleabane

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Erigeron L. - fleabane

Species

Erigeron uncialis S.F. Blake - lone fleabane

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