Balduina

Annuals or perennials, 30-100 cm (gland-dotted). Stems erect, simple or branched (terete or angled), glabrous or hairy. Leaves cauline; alternate; sessile; blades linear, linear-spatulate, or spatulate, margins entire, faces glabrous or ± hairy. Heads borne singly or in loose, corymbiform to paniculiform arrays. Involucres hemispheric to broadly campanulate, 6-25 mm diam. Phyllaries persistent, 30-50 in 3-5 series (distinct, lanceolate to ovate, unequal). Receptacles slightly convex, deeply pitted (pits collectively forming honeycombed structure, each pit ± enveloping a disc floret, pit borders irregularly toothed to entire), epaleate (pits sometimes interpreted as formed from connate paleae). Ray florets 8-22, neuter; corollas yellow (tubes glabrous or hairy, laminae spatulate, abaxially hairy, adaxially glabrous). Disc florets 30-190, bisexual, fertile; corollas yellow, orange-red, or purple (at least tips), tubes shorter/longer than funnelform throats, lobes 5, deltate (abaxially hairy; stamens pale yellow; style-branch appendages subulate, papillate). Cypselae obconic, villous; pappi persistent, of 7-12 scales. x = 18.