| Siebera pungens (Lam.) DC. | Unknown or unspecified Asia | | 385 | MO | Tropicos | 100548208 | yes |
| Siebera pungens nana DC. | Syrian Arab Republic | Labillardière, J. J. H. de | s.n. | G | G-DC | 352456/1 | no |
| Siebera pungens (Lam.) DC. | Syrian Arab Republic | Aucher-Eloy, P. M. R. | 3351 | G | G-DC | 352454/1 | no |
| Siebera pungens (Lam.) DC. | Lebanon | Aucher-Eloy, P. M. R. | s.n. | G | G-DC | 352453/1 | no |
| Siebera pungens (Lam.) J. Gay | Turkey | Reeves, R.D.; Adigüzel, N.; Bingöl, Ö. | 2204 | E | N/A | E00287922 | yes |
| Siebera pungens (Lam.) J. Gay | Turkey | Reeves, R.D.; Adigüzel, N. | 2319 | E | N/A | E00287909 | yes |
| Siebera | Turkey | Aberdeen Univ. Amanus Expedition | F4 455 | E | N/A | E00460921 | yes |
| Siebera nana (DC.) Bornm. | Iran, Islamic Republic of | Raino Alava & M.H.Bokhari | 10746 | E | N/A | E00460900 | yes |
| Siebera nana (DC.) Bornm. | Iraq | Haines, R. Wheeler | 262 | E | N/A | E00460901 | yes |
| Siebera nana (DC.) Bornm. | Afghanistan | Wendelbo, Per; Hedge, I. & Ekberg, L. | W7719 | E | N/A | E00460902 | yes |
| Siebera nana (DC.) Bornm. | Iran, Islamic Republic of | Kotschy, Carl (Karl) Georg Theodor | 385 | E | N/A | E00460911 | yes |
| Siebera nana (DC.) Bornm. | Iraq | Rechinger, K.H. | 12034 | E | N/A | E00460912 | yes |
| Siebera nana (DC.) Bornm. | Turkey | Stainton, J.D. Adam & Henderson, Douglas, M. | 5475 | E | N/A | E00460903 | yes |
| Siebera nana (DC.) Bornm. | Iran, Islamic Republic of | Rechinger, Karl Heinz | 49305 | E | N/A | E00460904 | yes |
| Siebera nana (DC.) Bornm. | Turkey | Sintenis, Paul Ernst Emil | 1092 | E | N/A | E00460905 | yes |
| Siebera nana (DC.) Bornm. | Iran, Islamic Republic of | Koelz, Walter | 15052 | E | N/A | E00460906 | yes |
| Siebera nana (DC.) Bornm. | Turkey | Alava, Reino Olavi | 7017 | E | N/A | E00460907 | yes |
| Siebera nana (DC.) Bornm. | Turkey | Bisby, F.A. | C6 | E | N/A | E00460908 | yes |
| Siebera nana (DC.) Bornm. | Iraq | Sintenis, Paul Ernst Emil | 1149 | E | N/A | E00460909 | yes |
| Siebera nana (DC.) Bornm. | Iraq | Sintenis, P. | 1149 | E | N/A | E00460910 | yes |
| Siebera pungens (Lam.) J. Gay | Turkey | Baytop, T. | 23133 | E | N/A | E00460920 | yes |
| Siebera pungens (Lam.) J. Gay | Turkey | Davis, Peter Hadland & Polunin, Oleg Vladimir | 24803 | E | N/A | E00460913 | yes |
| Siebera pungens (Lam.) J. Gay | Turkey | Haradjian, Manoog | 1495 | E | N/A | E00460914 | yes |
| Siebera pungens (Lam.) J. Gay | Turkey | Davis, P.H.; Dodds, J.G. & Çetik, R. | 20382 | E | N/A | E00460915 | yes |
| Siebera pungens (Lam.) J. Gay | Turkey | Aberdeen Univ. Amanus Expedition | KI 736 | E | N/A | E00460916 | yes |
| Siebera pungens (Lam.) J. Gay | Jordan | Baierle, U. | 87-737 | E | N/A | E00460917 | yes |
| Siebera pungens (Lam.) J. Gay | Turkey | Davis, P.H.; Dodds, J.G. & Çetik, R. | 20416 | E | N/A | E00460918 | yes |
| Siebera pungens (Lam.) J. Gay | Turkey | [Karamanagh, Kamil] | s.n. | E | N/A | E00460919 | yes |
| Siebera billardieri Benth | Unknown or unspecified country | Rodway, F.A. | 1257 | K | Spirit Collection | 11589.000 | no |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | Louis [Frères Maristes d'Alep] | s.n. | P | P | P04389570 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | Louis [Frères Maristes d'Alep] | s.n. | P | P | P04389578 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | Boissier | s.n. | P | P | P02702246 | yes |
| Siebera pungens (Lam.) DC. | Lebanon | Gombault, R. | s.n. | P | P | P04389571 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | Louis [Frères Maristes d'Alep] | s.n. | P | P | P04389579 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702249 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702244 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702245 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702135 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389568 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702131 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702132 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702138 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389569 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389575 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702252 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702250 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702248 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702253 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702243 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389566 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702134 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389576 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702247 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389567 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702256 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702255 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702130 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702136 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702254 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389574 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702133 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389768 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702137 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702251 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P03312660 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389577 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P02702129 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389573 | yes |
| Siebera pungens (Lam.) DC. | Unknown or unspecified country | | s.n. | P | P | P04389572 | yes |