C.V.Morton, ?J. Arnold Arbor. 17: 349. 1936?, 1936.

C.V.Morton, C.V.Morton,, C.V.Morton,, and C.V.Morton, ?J. Arnold Arbor. 17: 347. 1936?, 1936.

C.V.Morton, ?J. Arnold Arbor. 17: 346. 1936?, 1936.

C.V.Morton and C.V.Morton, ?J. Arnold Arbor. 17: 348. 1936?, 1936.

C.V.Morton, ?J. Arnold Arbor. 17: 345. 1936 [Oct 1936]?, 1936.

C.V.Morton, ?J. Arnold Arbor. 17: 345. 1936?, 1936.