PaleoDB taxon number: 370011
Full reference: D. I. Axelrod. 1939. A Miocene flora from the western border of the Mohave desert. Carnegie Institution of Washington Publications 516:1-129
Type specimen: UCMP 1420, 1421. Its type locality is Cache Peak (P-3643), which is in a Hemingfordian/Barstovian terrestrial horizon in the Bopesta Formation of California.