Monographs Details: Stenopadus
Authority: Maguire, Bassett & Wurdack, John J. 1957. The Botany of the Guiana Highland -- Part II. Mem. New York Bot. Gard. 9 (3): 235-392.
Scientific Name:Stenopadus

Significant trends or lines of modification have taken place within Stenopadus which have led to sectional differentiation. The four sections show complete or partial geographic containment. The section Kunhardtia, of four species, is considered basic or the most primitive because of its large, mostly manyflowered, numerously bracted heads, strongly paleaceous receptacles, and corollas with stamens attached within the corolla at the union of the distinct tube and limb. The single species of the section Campestris has similar but urceolate corolla with merely flexuous lobes. In the four species of the section Connellii, the attachment of anther filaments has moved up to the sinus, the receptacular pales have been reduced to a few in number or are lacking, and the pappus setae are filiform. In the six species of the section Stenopadus, the filaments are attached in the sinus, the receptacles remain strongly paleaceous, and leaves are strongly reticulate-veined. This last distinguishing feature makes members of the section Stenopadus immediately and easily recognized.