| W. Curtis, Bot. Mag., vol. 143 [ser. , vol. 12]: p. 0, t. 0, fig. 0 (1917) [52] | |
| Illustration contributed by: | Missouri Botanical Garden, St. Louis, U.S.A. |
W. Curtis, Bot. Mag., vol. 143 [ser. , vol. 12]: p. 0, t. 0, fig. 0 (1917)