Logfia

Annual herbs, greyish-cottony. Leaves entire, sessile, alternate. Capitula heterogamous, disciform, somewhat conical, in small clusters surrounded and overtopped by leaves, and/or branches; involucral bracts c. 3-seriate, the innermost somewhat conduplicate and enveloping the outermost florets; receptacle c. concave, ebracteate. Outer florets filiform, female; inner florets bisexual, fewer than outer, corolla 4-lobed; stamens 4, anthers tailed; style branches with a prolonged sterile appendage. Cypselas homomorphic, with mucilage-producing papillae, those of few outer florets falling with their subtending bract; pappus of scabrous bristles, ciliate at base, usually falling as a single unit.