Information

 Annual herb 15-120 cm tall; stems erect, branching, grey-brown, puberulous. Leaves opposite (proximally) or alternate, sessile, (narrowly) ovate, 2-11 cm long, 0.5-5 cm wide, base cuneate to rounded or cordate, margins subentire, apex obtuse and apiculate, green and sparsely pubescent above, white-tomentose beneath. Capitula in rather lax terminal and upper axillary compound corymbiform cymes; stalks of individual capitula appressed-pubescent; involucre subglobose, 2-4 mm in diameter at flowering time; phyllaries 3-seriate, narrowly ovate, 2-6 mm long, the outer acute, slightly pungent, the inner obtuse, apiculate, all green centrally especially in upper part and with pallid membranous margins, finely rather densely pubescent to densely tomentose. Corolla 4-7.5 mm long, rich purple to pale violet blue, lilac or rarely white, densely hairy all over, lobes 1.5-2.7 mm long. Achenes ellipsoid, 1-1.7 mm long, 10-ribbed with 5 more prominent ribs alternating with 5 less prominent ribs, sparsely shortly hairy at least at the apex, to almost glabrous; pappus absent. Fig. 30/6 (achene), p. 127.

Information

 Annual herb 15-120 cm tall; stems erect, branching, grey-brown, puberulous. Leaves opposite (proximally) or alternate, sessile, (narrowly) ovate, 2-11 cm long, 0.5-5 cm wide, base cuneate to rounded or cordate, margins subentire, apex obtuse and apiculate, green and sparsely pubescent above, white-tomentose beneath. Capitula in rather lax terminal and upper axillary compound corymbiform cymes; stalks of individual capitula appressed-pubescent; involucre subglobose, 2-4 mm in diameter at flowering time; phyllaries 3-seriate, narrowly ovate, 2-6 mm long, the outer acute, slightly pungent, the inner obtuse, apiculate, all green centrally especially in upper part and with pallid membranous margins, finely rather densely pubescent to densely tomentose. Corolla 4-7.5 mm long, rich purple to pale violet blue, lilac or rarely white, densely hairy all over, lobes 1.5-2.7 mm long. Achenes ellipsoid, 1-1.7 mm long, 10-ribbed with 5 more prominent ribs alternating with 5 less prominent ribs, sparsely shortly hairy at least at the apex, to almost glabrous; pappus absent. Fig. 30/6 (achene), p. 127.

Information

 Annual herb 15-120 cm tall; stems erect, branching, grey-brown, puberulous. Leaves opposite (proximally) or alternate, sessile, (narrowly) ovate, 2-11 cm long, 0.5-5 cm wide, base cuneate to rounded or cordate, margins subentire, apex obtuse and apiculate, green and sparsely pubescent above, white-tomentose beneath. Capitula in rather lax terminal and upper axillary compound corymbiform cymes; stalks of individual capitula appressed-pubescent; involucre subglobose, 2-4 mm in diameter at flowering time; phyllaries 3-seriate, narrowly ovate, 2-6 mm long, the outer acute, slightly pungent, the inner obtuse, apiculate, all green centrally especially in upper part and with pallid membranous margins, finely rather densely pubescent to densely tomentose. Corolla 4-7.5 mm long, rich purple to pale violet blue, lilac or rarely white, densely hairy all over, lobes 1.5-2.7 mm long. Achenes ellipsoid, 1-1.7 mm long, 10-ribbed with 5 more prominent ribs alternating with 5 less prominent ribs, sparsely shortly hairy at least at the apex, to almost glabrous; pappus absent. Fig. 30/6 (achene), p. 127.