William Jackson Hooker,
Curtis's Botanical Magazine, Volume 58…
“ Leaves nearly a foot long, including the petiole, deeply pinnatifid, coriaceous, dark green above, clothed with rusty down beneath, the segments one to two inches long, broadly linear, dilated at the base, acute at the point, marked with three to four parallel nerves: petioles four to five inches long, rounded, clothed with rusty down. The young leaves are covered all over with a rich velvety, red tomentum. ”
