Beargrass, a plant of many roles, is focus of new report

November 19, 2012

Beargrass is an ecologically, culturally, and economically important plant in the Western United States and, for the first time, landowners, managers, and harvesters now have a comprehensive report about the species.

The report, Natural and Cultural History of Beargrass (Xerophyllum tenax), published by the U.S. Forest Service's , identifies critical knowledge gaps and areas for future research. It also documents how changes in disturbance, including fire, may affect the species across its range.

"Beargrass is emblematic of a web of natural and in the West," said Susan Stevens Hummel, a research forester at the station and lead author of the report. "This means that organisms and processes—like people, plants, and —are interrelated."

Beargrass is a member of the lily family that, when in bloom, produces a single stalk capped with clusters of white flowers. It grows in a wide variety of habitat types and conditions, but in just two geographic areas—from the mountains of northwestern Washington south into west-central California, and from Canada south into Wyoming along the .

The plant provides food, habitat, and raw material for an array of —from bees and flies, to rodents, bears, deer, and elk. Beargrass has longstanding cultural value and is harvested by Native Americans for use in basketry and regalia, and for medicinal and decorative purposes. It also is coveted by the commercial floral greens industry, which generates more than $200 million a year in the .

Hummel, together with her coauthors at the Xerces Society and the station, found that historical and contemporary land use practices in beargrass habitat, combined with the rise of the commercial floral greens industry, are creating shifts in disturbances within beargrass habitat.

"We found that beargrass is experiencing decreased disturbance from natural and human-caused fire, but increased disturbance from leaf harvest by the floral industry," Hummel said. "Our report looks at each of these different disturbance types and their potential effects on beargrass, its pollinators, and on human gatherers."

Among the report's findings:

  • Disturbance effects on pollinators and on beargrass reproduction and abundance are not well understood;
  • Traditional and commercial harvesters seek different leaf properties and use different methods to harvest beargrass;
  • No coordinated effort exists among landowners to monitor the volume of beargrass being harvested each year.
"This report clarifies for land managers the importance of beargrass and offers researchers a list of about the plant," Hummel said. "By addressing some of the key issues identified in the report, forest management practices can be developed to help sustain the ecological web of which beargrass is a part."

Explore further: Landscape study may offer solutions for fire managers

More information: Natural and Cultural History of Beargrass is available online at www.treesearch.fs.fed.us/pubs/42172

Related Stories

Landscape study may offer solutions for fire managers

July 24, 2008

A fire is currently burning through a study area where projections were made about fire behavior about 2 years ago. Managers used data and analysis from the Gotchen Late-Successional Reserve (LSR) study in the planning, analysis, ...

Aspen's 'dandelion' habits challenge mountain evergreens

February 22, 2010

(PhysOrg.com) -- The face of high-elevation evergreen forests in Western Canada could be drastically altered as a combination of climate change, human and natural disturbances is making spruce and pine forests in the Rocky ...

Recommended for you

Cow gene study shows why most clones fail

December 9, 2016

It has been 20 years since Dolly the sheep was successfully cloned in Scotland, but cloning mammals remains a challenge. A new study by researchers from the U.S. and France of gene expression in developing clones now shows ...

Blueprint for shape in ancient land plants

December 9, 2016

Scientists from the Universities of Bristol and Cambridge have unlocked the secrets of shape in the most ancient of land plants using time-lapse imaging, growth analysis and computer modelling.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.