Ageratina shastensis is a species of snakeroot which is
endemic to
Shasta County, California. It is known by the common names Mt. Shasta snakeroot and Shasta eupatorium.[3][4][5]
Description
Ageratina shastensis is a woody perennial which bears unassuming fluffy white flowers about a centimeter wide. It is an uncommon plant which grows in the cracks of limestone cliffs of the
Mount Shasta, part of the
Cascade Range.[6]
Etymology
Ageratina is derived from
Greek meaning 'un-aging', in reference to the flowers keeping their color for a long time. This name was used by
Dioscorides for a number of different plants.[7]
^Keil, David J.; Powell, A. Michael (1993).
"Ageratina shastensis". In Hickman, James C. (ed.). The Jepson Manual: Higher Plants of California. University and Jepson Herbaria.
^Gledhill, David (2008). "The Names of Plants". Cambridge University Press.
ISBN9780521866453 (hardback),
ISBN9780521685535 (paperback). pp 39