H.  James-Clark, ?Lucernaria the coenotype of Acalephae; with additions and notes by the author?, American Journal of Science, &c., vol. 35, pp. 346-355, 1863.

H.  James-Clark, ?Prodromus of the history, structure, and physiology of the order Lucernariae?, Journal of the Boston Society of Natural History, vol. 7, pp. 531-567, 1863.