Shapes of stigmas and papillae in species of tribe Lithospermeae DC. from Asiatic Russia. Panels 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, and 22: the shape of the stigma; 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 23, and 24: the shape of papillae; 1 and 2: Lithospermum officinale; 3 and 4: L. erythrorhizon; 5 and 6: Cerinthe minor; 7 and 8: Botriospermum tenellum; 9 and 10: Onosma simplicissimum; 11 and 12: O. gmelinii (Khakassia); 13 and 14: O. gmelinii (Altai Republic); 15 and 16: O. transrhymnense (Novosibirsk Oblast); 17 and 18: O. setosa; 19 and 20: O. transrhymnense (Krasnoyarsk Krai); 21: Buglossoides arvensis; and 22-24: Echium vulgare. Scale bars: 60 µm (1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, and 22) and 4 µm (2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 23, and 24).