Its horns are of the lyrate form, and its colour a bright rufous.
"Quadrupeds, What They Are and Where Found" by Mayne Reid
Lower leaves mostly lyrate, incised, or pinnatifid.
"The Manual of the Botany of the Northern United States" by Asa Gray
The horns are lyrate in the male, absent in the female.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard