Rep. Exped. Rocky Mts. 313 (1845)
[Report of the exploring expedition to the Rocky Mountains in the year 1842, and to Oregon and North California in the years 1843-44]
 
3836962 1009293 Thamnosma africana Engl. H.G.A. Engler, O. Drude, Veg. Erde, vol. 9(1): (Die Pflanzenwelt Afrikas insbesondere seiner tropischen Gebiete): p. 556, fig. 495 (1910)