Troglophyton

Delicate annual or short-lived perennial herbs well-branched from base; stems filiform, prostrate, diffuse or weakly erect, thinly white-woolly, distantly leafy. Leaves alternate, small, on filiform petioles; blade elliptic or ovate; margins flat, entire, both surfaces cobwebby or thinly woolly (hair type B), upper sometimes glabrescent. Capitula discoid or disciform, small, on filiform peduncles racemosely or subcorymbosely arranged, or rarely nearly sessile and crowded. Involucralbracts in 3(-5) rows, subequal, slightly exceeding flowers; stereome undivided or with 2 or 3 thin linear patches in upper part, lower part canaliculate, embracing adjacent flower; lamina delicate, pellucid, sometimes purplish above stereome, tip subopaque or opaque white, obtuse to subacute, either radiating or whole involucre rotating at maturity. Receptacle shallowly tubercled, flat, epaleate. Flowers 8-30, yellow, sometimes tipped pink; female flowers (0)2-23, fewer than, or +/- equalling, or 2 or 3(-7) x as many as bisexual florets, narrowly tubular or filiform; bisexual flowers narrowly infundibuliform or tubular below, narrowly campanulate above, with 5 deltoid lobes, glandular hairs with biseriate stalk and small globular 2-celled head on backs of all lobes. Anthers ecalcarate, caudate, tails shorter than, +/- equalling, or slightly exceeding filament collar, with small obtuse apical appendage; endothecial tissue polarised. Style branches truncate and penicillate, with obtuse sweeping hairs apically. Cypselas oblong, wall with slightly raised cells, moderately imbricate or not, oblong duplex hairs with swelling cushion frequently present, apparently not always emitting mucilage (neither imbricate cells nor duplex hairs a specific character). Pappus bristles barbellate or subplumose above, these cilia +/- clavate and with delicate wall thickenings, shaft markedly barbellate, bases cohering by patent cilia.