North America Native Plant

Onyx Peak Bedstraw

Botanical name: Galium angustifolium onycense

USDA symbol: GAANO

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Galium angustifolium Nutt. ex A. Gray var. onycense Dempster (GAANO2)   

Onyx Peak Bedstraw: A Rare California Native Worth Protecting If you’re passionate about California native plants and love supporting rare species, Onyx Peak bedstraw (Galium angustifolium onycense) might just capture your heart. This delicate perennial herb represents a unique piece of California’s botanical heritage, though it comes with some important ...

Rare plant alert!

Region: Conservation status by state

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. ⚘

Onyx Peak Bedstraw: A Rare California Native Worth Protecting

If you’re passionate about California native plants and love supporting rare species, Onyx Peak bedstraw (Galium angustifolium onycense) might just capture your heart. This delicate perennial herb represents a unique piece of California’s botanical heritage, though it comes with some important considerations for the conscientious gardener.

What Makes Onyx Peak Bedstraw Special

Onyx Peak bedstraw is a charming forb that belongs to the coffee family. Unlike its woody relatives, this herbaceous perennial lacks significant woody tissue and keeps its growing points at or below ground level. What sets it apart is its incredibly narrow distribution – this little plant calls only California home, making it a true Golden State endemic.

The plant goes by the scientific name Galium angustifolium onycense, and you might occasionally see it listed under its synonym Galium angustifolium Nutt. ex A. Gray var. onycense Dempster. Despite its limited range, it has earned recognition as a distinct subspecies worthy of conservation attention.

Where You’ll Find This California Native

This bedstraw species grows exclusively in California, where it has adapted to specific local conditions. Its common name hints at its association with the Onyx Peak area, reflecting its specialized habitat requirements and limited geographic range.

A Note About Rarity

Here’s where things get important for responsible gardeners: Onyx Peak bedstraw has a Global Conservation Status of S5T2. While the exact implications of this status aren’t fully defined, any plant with conservation rankings deserves our careful attention. If you’re interested in growing this species, it’s crucial to source plants only from reputable native plant nurseries that propagate their stock responsibly rather than collecting from wild populations.

Garden Appeal and Design Role

Like other bedstraw species, Onyx Peak bedstraw likely produces small, delicate white flowers arranged in clusters, creating a subtle but charming display. The narrow leaves typical of this genus give the plant a fine, airy texture that works beautifully as a naturalistic ground cover or filler plant in native gardens.

This perennial works especially well in:

  • Native California plant gardens
  • Drought-tolerant landscapes
  • Rock gardens with good drainage
  • Naturalistic plantings that mimic local ecosystems

Growing Conditions and Care

Based on its California native status and the typical requirements of bedstraw species, Onyx Peak bedstraw likely thrives in:

  • Well-draining soils (essential for preventing root rot)
  • Full sun to partial shade conditions
  • Minimal water once established
  • USDA hardiness zones typical for California (likely zones 8-10)

The key to success with most California natives is remembering their adaptation to Mediterranean-type climates with wet winters and dry summers. Overwatering during the dry season can be more harmful than helpful.

Supporting Pollinators and Wildlife

While specific wildlife benefits for this subspecies aren’t well-documented, bedstraw species generally support small pollinators with their modest but numerous flowers. The seeds may also provide food for small birds and other wildlife, making it a valuable addition to habitat gardens focused on supporting local ecosystems.

The Bottom Line for Gardeners

Onyx Peak bedstraw offers California gardeners a chance to grow a truly unique piece of their state’s natural heritage. However, its conservation status means this isn’t a plant to purchase on impulse. If you decide to include it in your garden, take the time to find a reputable source that propagates rather than wild-collects their plants.

For gardeners outside California or those looking for similar but more readily available options, consider exploring other California native bedstraw species or consulting with local native plant societies about appropriate alternatives for your region. Sometimes the best way to support rare plants is to grow their more common relatives while supporting conservation efforts for the species that need extra protection.

Onyx Peak Bedstraw

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

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Galium L. - bedstraw

Species

Galium angustifolium Nutt. ex A. Gray - narrowleaf bedstraw

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