Figure 1.

Representatives of the seven tribes of clade E. A, A bouquet of Matthiola incana (ANCH). B, Bunias orientalis (BUNI). C, Euclidium syriacum (EUCL). D, Leiospora exscapa (EUCL). E, Tetracme quadricornis (EUCL). F, Strigosella africana (EUCL). G, Hesperis tristis (HESP). H, Tchihatchewia isatidea (HESP). I, Chorispora bungeana (CHOR). J, Parrya olgae (CHOR). K, Dontostemon elegans (DONT). L, Shehbazia tibetica (SHEH). Photographs are by T. Mandáková (A), K. Schneider (B), P.E. Yevseyenkov (C), I.E. Smelyansky (D), A.L. Ebel (E), S.V. Smirnov (F), L. Hoskovec (G), E. Rencová (H), P.A. Kosachev (I and K), N. Yu Beshko (J), and Q. Lin (L). All photographs are reproduced with the permission of their authors.