Centenaria P. Gonzales , A.Cano & H.Rob., 2018

onzales, Paul, ano, Asuncion & Robinson, Harold, 2018, A new genus of Compositae (Eupatorieae, Piqueriinae) from Peru, named Centenaria to honour the 100 th anniversary of the Natural History Museum of the National University Mayor of San Marcos, PhytoKeys 113, pp. 69-77 : 69

Centenaria P. Gonzales, A.Cano & H.Rob. gen. nov.

Description.

Small, erect, annual herbs, to 30 cm tall. Leaves opposite, blade ovate to broadly elliptical, coarsely to finely serrate. Inflorescence a diffuse corymbose cyme. Phyllaries 5, distant, biseriate, subequal to equal, persistent, oblong-elliptical to obovate-elliptical, with shortly apiculate apices; receptacle flat, foveolate, glabrous, epaleaceous. Florets 7-14; corollas asymmetrical with the two inner lobes smaller, white, with distinct short constricted basal tube bearing glandular or eglandular hairs; throat short and broad-campanulate; lobes as long as wide or outer lobes of peripheral florets longer, short-papillose on inner surface and margins; lower part of filament glabrous; anther collars rather short; style base not enlarged, glabrous; arms rather short-clavate, densely short-papillose; papillae larger and less dense below clavate tip. Achenes prismatic, 5-ribbed, ribs setuliferous, narrowed and setuliferous above carpopodium; carpopodium inconspicuously, short-cylindrical; pappus 5 long, lanceolate squamellae, densely scabrid on margins, nearly smooth on outer surface, smooth on inner surface.