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D. Io. Hieron. Kniphofii pathol. et prax. in Acad. Erfurt. prof. publ. ordin. facult. med. senior. et adsess. primar., Acad. Caesar. nat. curiosor adiuncti, et bibliothecarii Botanica in originali, seu, Herbarium vivum :
Halae Magdeburgicae :Opera et studio Ioannis Godofredi Trampe, typographi halensis,MDCCLVIII-MDCCLXIV [1758-1764].
Maria Sybilla Meriaen Over de voortteeling en wonderbaerlyke veranderingen der Surinaamsche insecten :.
t'Amsterdam :By Jean Frederic Bernard,1730..
Students examine plants on campus in preparation for a test in Plant Taxonomy. We hope your studies were successful!
About a dozen botanists from the BLM and U.S. Forest Service descended upon the Wild and Scenic Rogue River to remove invasive weeds, May 21-25, 2018. Photos: Stacy Johnson, BLM
There is a weed invasion happening on the Rogue River, and the federal government is getting strategic about battling the threats to public land.
Two weeks ago, about a dozen botanists from the BLM and the U.S. Forest Service rafted the Wild and Scenic Rogue in remote southwest Oregon to spray, pull and wrench as many weeds as possible.
Yes, a weed wrench is a thing.
The timing of the river trip was key, going after the invasive plants when they are flowering and before most of the seeds come.
One noxious weed, Dyer’s woad, can have a thick taproot that extends 5 feet deep and has the ability to produce a lot of seed.
“One plant left on site could easily be a hundred plants next year,” said BLM botanist Stacy Johnson.
Hand or wrench-pulled weeds were bagged and thrown in the rafts to carry out, while others, like Japanese knotwood, can only be killed with herbicide.
In some areas of the Wild and Scenic Rogue River, of which the team covered about 35 miles, they found untouched weeds that were multiple feet taller than the botanists.
“There are always more invasive species than we have time, really, to remove,” said Johnson.
Scotch broom, French broom, Spanish broom, shiny geranium, yellow star thistle, knapweed, yellow water primrose and parrots feather are among the other noxious weeds removed by the BLM-USFS team.
If left to proliferate, the noxious weeds would outcompete the native vegetation, taking over the beaches, gravel bars and all the other features that make the river and surrounding wilderness distinctive. The weeds also affect wildlife by decreasing food options and water quality.
“There are a lot of non-native plants out on the river,” said Kailey Clarno, district botanist for the Forest Service. “We go after species that are making a large impact on the river.”
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👷 Read about the restoration of the historic Rogue River Ranch, completed last year: goo.gl/HtJN31