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Information Erect branching more or less hoary-tomentose herb; stem terete striate thinly tomentose. Upper leaves sessile, lanceolate or ovate-lanceolate, 1–2 in. long, from an obtuse or cordate-amplexicaul base, entire or subentire, glabrescent or scaberulous above, whitish-tomentose beneath. Capitula small in diffuse cymose panicles, on slender peduncles varying to 1/2– 3/4 in. Involucral scales appressed, pauciseriate, outer shorter linear-lanceolate, inner oval-oblong 3-nerved, acute or at length weathered and obtuse. Achenes obovoid, longitudinally and subequally 10–12-costate, glabrous or with thinly scattered short hairs.

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 An erect slender to bushy annual herb, 15–50 cm. tall. Stems sparingly to much branched, softly appressed puberulous; indumentum of short-stalked long-armed T-shaped hairs. Leaves opposite, becoming alternate on the upper stem, subsessile, 2–6 x 0.5–3.5 cm., lanceolate to oblong-lanceolate, apex acute or subobtuse mucronate, base rounded to cordate or broadly cuneate, margins entire, upper surface sparsely weakly pilose with fine T-shaped hairs, lower surface thinly whitish araneose-felted. Capitula small, few to numerous, in a ± diffuse arrangement; stalks slender, mostly 5–15 mm. long, appressed tomentellous. Involucres 3–5 x 4–5 mm., campanulate, florets exserted. Phyllaries few-seriate, narrowly lanceolate to elliptic-oblong, blunt at the apex, narrowly scarious on the margins, sometimes serrulate near the apex, hoary appressed-pubescent outside, the outer from c. 2 mm. long, the inner to c. 4 mm. long. Corollas mauve, 4–7.5 mm. long, funnel-shaped above shortly tubular below, tube and limb appressed puberulous the hairs short-stalked T-shaped. Achenes dark-brown, 1.0–1.5 mm. long, obovoid-turbinate, c. 12-ribbed, sparsely setulose, the bristles uncinate at the apex; pappus 0.