| Equisetum L. [247] | |
| Nov. Actorum Acad. Caes. Leop.-Carol. German. Nat. Cur., vol. 28 : t. 4, fig. 13 (1861) [K.G. Stenzel] [16] | |
| drawing: K.G. Stenzel [12] | |
| Harvard University Library, Cambridge, U.S.A. |
| Equisetum L. [247] | |
| Nov. Actorum Acad. Caes. Leop.-Carol. German. Nat. Cur., vol. 28 : t. 4, fig. 13 (1861) [K.G. Stenzel] [16] | |
| drawing: K.G. Stenzel [12] | |
| Harvard University Library, Cambridge, U.S.A. |
