Sphaeralcea coccinea
Malvaceae (Mallow Family)

Famed 18th century botanist and Professor, Thomas Nuttall, collected this species "From the River Platte to the Rocky Mountains" in 1811 and named the plant Malva coccinea.  Per Axel Rydberg renamed it Sphaeralcea coccinea in 1913.  (Information and quotation from Intermountain Flora.)

"Sphaer" is Greek for "a sphere or globe", "alcea" is Greek for "a mallow", and "Coccin" is Latin for "scarlet".