Irish, ?Rep. (Annual) Missouri Bot. Gard. 9: 99. 1898?, 1898.

Irish, ?Rep. (Annual) Missouri Bot. Gard. 9: 92, pl. 28, fig. 2, 4. 1898?, 1898.

Irish, ?Rep. (Annual) Missouri Bot. Gard. 9: 65. 1898?, 1898.