The rusty cord-moss (Entosthodon rubiginosus) is a small, endangered moss species found in specific saline and alkaline environments within the Thompson-Nicola region of British Columbia. This delicate plant, often overlooked due to its diminutive size, plays a crucial role in its ecosystem.

Characterized by its small, erect, reddish-brown capsules, the rusty cord-moss typically grows in dense patches. It thrives in areas with alkaline soils, such as near saline lakes, ponds, or on seepage slopes. These habitats are often found in arid or semi-arid regions.

Despite its small size, the rusty cord-moss plays a vital role in its ecosystem. It helps stabilize soil, prevent erosion, and provides habitat for other small organisms. Additionally, mosses like the rusty cord-moss can act as bioindicators, providing insights into the health of their environment.

Threats

Unfortunately, the rusty cord-moss is at risk due to habitat loss and degradation, primarily caused by human activities such as livestock grazing, development, and recreational use. In BC, it is blue-listed, meaning it is particularly sensitive or vulnerable to human activities or natural events. Climate change and invasive species also pose significant threats to its survival.

Conservation Efforts

To protect this at-risk species, conservation efforts are underway. These efforts include identifying and protecting critical habitats, monitoring populations, conducting research, raising public awareness, and collaborating with landowners and land managers.

You can help protect the rusty cord-moss by staying on designated trails, avoiding trampling vegetation, supporting conservation organizations, and educating others about its importance. By taking these steps, we can help ensure the survival of this endangered species and preserve the ecological integrity of the Thompson-Nicola region.

Additional Resources

• Rusty cord-moss (Entosthodon rubiginosus): COSEWIC assessment and status report 2017
• Recovery Strategy for the Rusty Cord-moss (Entosthodon rubiginosus) in British Columbia

Feature Photo: Entosthodon rubiginosus (dry), collection by R.D. Worthington (ID as “cf. rubiginosus” by H.A. Miller, 2006), Texas, El Paso County, Hueco Tanks State Historical Park, open area on top of North Mountain, March 20, 1995; photos by Russ Kleinman & Karen Blisard, March 19, 2023