PaleoDB taxon number: 54726
Full reference: H. D. MacGinitie. 1941. A Middle Eocene Flora from the Central Sierra Nevada. Carnegie Institution of Washington Publication 534:1-178
Sister taxa: none
Type specimen: U.C. Mus. Pal. Paleobot. Ser. cotypes nos. 2324, 2325. Its type locality is Chalk Bluff Locality 3318, which is in an Eocene floodplain claystone in California.